[SV 66499] Detect jobserver values that are too large

Set the jobserver pipe to non-blocking before writing tokens; if a
token write fails the user's jobserver value is too large so fail.

Original implementation: Dmitry Goncharov <dgoncharov@users.sf.net>

* src/posixos.c (set_blocking): Split into force_blocking() which
always enables/disables blocking; set_blocking() may call it.
(jobserver_setup): Set the write side of the pipe to non-blocking
before writing tokens.  If it fails with EAGAIN we know the pipe
is full: create a fatal error.
* tests/scripts/features/jobserver: Test a too-large jobserver.

.ccls

@@ -0,0 +1,28 @@
+clang
+%h --include=makeint.h
+-DHAVE_CONFIG_H
+-Isrc
+-Ilib
+-DLIBDIR="/usr/local/lib"
+-DLOCALEDIR="/usr/local/share/locale"
+-DMAKE_MAINTAINER_MODE
+-pthread
+-isystem
+/usr/include/guile/2.0
+-Wall
+-Wextra
+-Werror
+-Wwrite-strings
+-Wshadow
+-Wdeclaration-after-statement
+-Wbad-function-cast
+-Wformat-security
+-Wtype-limits
+-Wunused-but-set-parameter
+-Wlogical-op
+-Wpointer-arith
+-Wignored-qualifiers
+-Wformat-signedness
+-Wduplicated-cond
+-Wno-address
+-Wno-string-compare

.clangd

@@ -0,0 +1,14 @@
+CompileFlags:
+  Add: [-xc, -DHAVE_CONFIG_H, -DMAKE_MAINTAINER_MODE, -DLIBDIR="/usr/local/lib", -DLOCALEDIR="/usr/local/share/locale", -I../src, -Isrc, -I../lib, -Ilib, -Wall, -Wextra, -Wwrite-strings, -Wshadow, -Wdeclaration-after-statement, -Wbad-function-cast, -Wformat-security, -Wtype-limits, -Wunused-but-set-parameter, -Wlogical-op, -Wpointer-arith, -Wignored-qualifiers, -Wformat-signedness, -Wduplicated-cond, -Wno-string-compare, -Wno-unused-includes]
+
+---
+If:
+  PathMatch: .*\.h
+CompileFlags:
+  Add: [-xc-header, --include=makeint.h]
+
+---
+If:
+  PathMatch: .*/makeint\.h
+Diagnostics:
+  UnusedIncludes: None

.dir-locals.el

@@ -0,0 +1,21 @@
+(
+ (nil . ((bug-reference-bug-regexp . "\\(\\bSV[- ]\\([0-9]+\\)\\)")
+         (bug-reference-url-format . "https://savannah.gnu.org/bugs/?%s")
+         (ccls-initialization-options
+          . (:index (:threads 6
+                     :initialBlacklist ["/make-[0-9]" "tests/work/" "/\\.deps"
+                                        "/\\..*cache" "/\\.git"])))
+         (lsp-file-watch-ignored-directories
+          . ("[/\\\\]\\.git$"
+             "[/\\\\]\\..*cache$"
+             ;; autotools content
+             "[/\\\\]\\.deps$"
+             "[/\\\\]autom4te\\.cache$"
+             "[/\\\\]build-aux$"
+             ;; make-specific content
+             "[/\\\\]doc[/\\\\]manual$"
+             "[/\\\\]tests[/\\\\]work$"
+             "[/\\\\]make-[0-9]"))
+         ))
+ (c-mode . ((c-file-style . "gnu")))
+)

.gitignore

@@ -0,0 +1,78 @@
+# Development artifacts
+ID
+TAGS
+GPATH
+GRTAGS
+GTAGS
+.*cache
+.*gdbinit
+.gdb_history
+.vscode
+*~
+#*
+.#*
+*.diff
+*.patch
+*.orig
+*.rej
+
+# Configure artifacts
+/lib/
+/m4/
+ABOUT-NLS
+INSTALL
+Makefile
+Makefile.in
+Basic.mk
+aclocal.m4
+autom4te.cache/
+build-aux/
+config.cache
+config.h
+config.h.in
+config.log
+config.status
+configure
+/mk/Posix.mk
+stamp-*
+.dirstamp
+gnulib
+*.sed
+
+# Build artifacts
+.deps/
+gmk-default.h
+loadavg
+make
+*.i
+*.o
+*.a
+*.exe
+*.dll.a
+*.obj
+*.lib
+*.pdb
+*.sbr
+
+# Windows build artifacts
+WinDebug/
+WinRel/
+GccDebug/
+GccRel/
+TccDebug/
+TccRel/
+
+# Test artifacts
+makeerror-*
+test-suite.log
+
+# Distribution artifacts
+.dep_segment
+.check-git-HEAD
+ChangeLog
+README
+build.cfg
+mkconfig.h
+make-[0-9]*/
+make-[0-9]*.tar.*
+checkcfg.*.log

AUTHORS

@@ -0,0 +1,128 @@
+-----------------------------------
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Basic.mk.template

@@ -0,0 +1,134 @@
+# Basic GNU -*-Makefile-*- to build GNU Make
+#
+# NOTE:
+# If you have no 'make' program at all to process this makefile:
+#   * On Windows, run ".\build_w32.bat" to bootstrap one.
+#   * On MS-DOS, run ".\builddos.bat" to bootstrap one.
+#
+# Once you have a GNU Make program created, you can use it with this makefile
+# to keep it up to date if you make changes, as:
+#
+#   make.exe -f Basic.mk
+#
+# Copyright (C) 2017-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+all:
+
+src = src/
+lib = lib/
+
+make_SOURCES = %make_SOURCES%
+glob_SOURCES = %glob_SOURCES%
+loadavg_SOURCES = %loadavg_SOURCES%
+alloca_SOURCES = %alloca_SOURCES%
+w32_SOURCES = %w32_SOURCES%
+vms_SOURCES = %vms_SOURCES%
+
+remote_SOURCES = $(src)remote-stub.c
+
+OUTDIR =
+SRCDIR = .
+
+OBJEXT = o
+EXEEXT =
+
+PREFIX = /usr/local
+INCLUDEDIR = $(PREFIX)/include
+LIBDIR = $(PREFIX)/lib
+LOCALEDIR = $(PREFIX)/share
+
+PROG = $(OUTDIR)make$(EXEEXT)
+
+prog_SOURCES = $(make_SOURCES) $(remote_SOURCES)
+
+BUILT_SOURCES =
+
+OBJECTS = $(patsubst %.c,$(OUTDIR)%.$(OBJEXT),$(prog_SOURCES))
+
+RESOURCE_OBJECTS =
+
+OBJDIRS = $(addsuffix .,$(sort $(dir $(OBJECTS))))
+
+# Use the default value of CC
+LD = $(CC)
+
+# Reserved for command-line override
+CPPFLAGS =
+CFLAGS = -g -O2
+LDFLAGS =
+
+extra_CPPFLAGS = -DHAVE_CONFIG_H -I$(OUTDIR)src -I$(SRCDIR)/src -I$(OUTDIR)lib -I$(SRCDIR)/lib \
+	-DLIBDIR=\"$(LIBDIR)\" -DINCLUDEDIR=\"$(INCLUDEDIR)\" -DLOCALEDIR=\"$(LOCALDIR)\"
+extra_CFLAGS =
+extra_LDFLAGS = $(extra_CFLAGS) $(CFLAGS)
+
+C_SOURCE = -c
+OUTPUT_OPTION = -o $@
+LINK_OUTPUT = -o $@
+
+# Command lines
+
+# $(call COMPILE.cmd,<src>,<tgt>)
+COMPILE.cmd = $(CC) $(extra_CFLAGS) $(CFLAGS) $(extra_CPPFLAGS) $(CPPFLAGS) $(TARGET_ARCH) $(OUTPUT_OPTION) $(C_SOURCE) $1
+
+# $(call LINK.cmd,<objectlist>)
+LINK.cmd = $(LD) $(extra_LDFLAGS) $(LDFLAGS) $(TARGET_ARCH) $1 $(LDLIBS) $(LINK_OUTPUT)
+
+# $(CHECK.cmd) $(CHECK.args)
+CHECK.cmd = cd $(SRCDIR)/tests && ./run_make_tests -make $(shell cd $(<D) && pwd)/$(<F)
+CHECK.args ?=
+
+# $(call MKDIR.cmd,<dirlist>)
+MKDIR.cmd = mkdir -p $1
+
+# $(call RM.cmd,<filelist>)
+RM.cmd = rm -f $1
+
+# $(call CP.cmd,<from>,<to>)
+CP.cmd = cp $1 $2
+
+CLEANSPACE = $(call RM.cmd,$(OBJECTS) $(RESOURCE_OBJECTS) $(PROG) $(BUILT_SOURCES))
+
+# Load overrides for the above variables.
+include $(firstword $(wildcard $(SRCDIR)/mk/$(lastword $(subst -, ,$(MAKE_HOST)).mk)))
+
+VPATH = $(SRCDIR)
+
+all: $(PROG)
+
+$(PROG): $(OBJECTS) $(RESOURCE_OBJECTS)
+	$(call LINK.cmd,$^)
+
+$(OBJECTS): $(OUTDIR)%.$(OBJEXT): %.c
+	$(call COMPILE.cmd,$<)
+
+$(OBJECTS): | $(OBJDIRS) $(BUILT_SOURCES)
+
+$(OBJDIRS):
+	$(call MKDIR.cmd,$@)
+
+check:
+	$(CHECK.cmd) $(CHECK.args)
+
+clean:
+	$(CLEANSPACE)
+
+$(filter %.h,$(BUILT_SOURCES)): %.h : %.in.h
+	$(call RM.cmd,$@)
+	$(call CP.cmd,$<,$@)
+
+.PHONY: all check clean

COPYING

@@ -0,0 +1,674 @@
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+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
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+doubtful cases shall be resolved in favor of coverage.  For a particular
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+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
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+is a consumer product regardless of whether the product has substantial
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+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
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+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
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+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
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+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
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+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
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+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/philosophy/why-not-lgpl.html>.

Makefile.am

@@ -0,0 +1,221 @@
+# This is a -*-Makefile-*-, or close enough
+#
+# Copyright (C) 1997-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+AUTOMAKE_OPTIONS = dist-lzip silent-rules std-options subdir-objects nostdinc
+ACLOCAL_AMFLAGS = -I m4
+
+MAKE_HOST =	@MAKE_HOST@
+
+SUBDIRS =	lib po doc
+
+bin_PROGRAMS =	make
+include_HEADERS = src/gnumake.h
+
+man_MANS =	doc/make.1
+
+make_SRCS =	src/ar.c src/arscan.c src/commands.c src/commands.h \
+		src/debug.h src/default.c src/dep.h src/dir.c src/expand.c \
+		src/file.c src/filedef.h src/function.c src/getopt.c \
+		src/getopt.h src/getopt1.c src/gettext.h src/guile.c \
+		src/hash.c src/hash.h src/implicit.c src/job.c src/job.h \
+		src/load.c src/loadapi.c src/main.c src/makeint.h src/misc.c \
+		src/mkcustom.h src/os.h src/output.c src/output.h src/read.c \
+		src/remake.c src/rule.c src/rule.h src/shuffle.h src/shuffle.c \
+		src/signame.c src/strcache.c src/variable.c src/variable.h \
+		src/version.c src/vpath.c src/warning.c src/warning.h
+
+w32_SRCS =	src/w32/pathstuff.c src/w32/w32os.c src/w32/compat/dirent.c \
+		src/w32/compat/posixfcn.c src/w32/include/dirent.h \
+		src/w32/include/dlfcn.h src/w32/include/pathstuff.h \
+		src/w32/include/sub_proc.h src/w32/include/w32err.h \
+		src/w32/subproc/misc.c src/w32/subproc/proc.h \
+		src/w32/subproc/sub_proc.c src/w32/subproc/w32err.c
+
+w32_utf8_SRCS = src/w32/utf8.rc src/w32/utf8.manifest
+
+vms_SRCS =	src/vms_exit.c src/vms_export_symbol.c src/vms_progname.c \
+		src/vmsdir.h src/vmsfunctions.c src/vmsify.c
+
+glob_SRCS =	lib/fnmatch.c lib/fnmatch.h lib/glob.c lib/glob.h
+
+alloca_SRCS =	lib/alloca.c
+
+loadavg_SRCS =	lib/getloadavg.c
+
+make_SOURCES =	$(make_SRCS)
+EXTRA_make_SOURCES = $(vms_SRCS)
+
+if HAVE_GUILE
+  _GUILE_CFLAGS = $(GUILE_CFLAGS)
+  _GUILE_LIBS = $(GUILE_LIBS)
+else
+  _GUILE_CFLAGS =
+  _GUILE_LIBS =
+endif
+
+make_LDADD =	$(LIBOBJS) $(_GUILE_LIBS) lib/libgnu.a $(GETLOADAVG_LIBS) \
+		@LIBINTL@
+
+localedir =	$(datadir)/locale
+
+AM_CPPFLAGS =	-Isrc -I$(top_srcdir)/src -Ilib -I$(top_srcdir)/lib \
+		-DLIBDIR=\"$(libdir)\" -DLOCALEDIR=\"$(localedir)\"
+
+# If prefix is not a standard location, look in prefix as well
+if !KNOWN_PREFIX
+  AM_CPPFLAGS += -DINCLUDEDIR=\"$(includedir)\"
+endif
+
+AM_CFLAGS =	$(_GUILE_CFLAGS)
+
+if WINDOWSENV
+  make_SOURCES += $(w32_SRCS)
+  AM_CPPFLAGS  += -I $(top_srcdir)/src/w32/include
+else
+  make_SOURCES += src/posixos.c
+endif
+
+UTF8OBJ = src/w32/utf8.$(OBJEXT)
+
+if HAVE_WINDRES
+  make_LDADD += $(UTF8OBJ)
+endif
+
+$(UTF8OBJ) : $(w32_utf8_SRCS)
+	$(WINDRES) -o $@ -i $<
+
+if USE_CUSTOMS
+  make_SOURCES += src/remote-cstms.c
+else
+  make_SOURCES += src/remote-stub.c
+endif
+
+# Extra stuff to include in the distribution.
+
+mk_FILES =	Basic.mk mk/msdosdjgpp.mk mk/VMS.mk mk/Windows32.mk
+# We don't need this, since the standard automake output will do.
+#mk/Posix.mk.in
+
+m4_FILES =	m4/gnulib-cache.m4
+
+test_FILES =	tests/run_make_tests tests/run_make_tests.bat \
+		tests/run_make_tests.pl tests/test_driver.pl \
+		tests/config-flags.pm.in tests/config_flags_pm.com \
+		tests/config-flags.pm.W32 \
+		tests/mkshadow tests/thelp.pl tests/guile.supp tests/README
+# test/scripts are added via dist-hook below.
+
+EXTRA_DIST =	ChangeLog INSTALL README build.sh build.cfg.in $(man_MANS) \
+		src/mkconfig.h README.customs README.OS2 README.zOS \
+		README.DOS builddos.bat src/configh.dos \
+		README.W32 build_w32.bat src/config.h.W32 \
+		README.VMS makefile.com src/config.h-vms src/vmsjobs.c \
+		vms_export_symbol_test.com \
+		src/gmk-default.scm src/gmk-default.h \
+		$(mk_FILES) $(m4_FILES) $(test_FILES) $(w32_utf8_SRCS)
+
+# --------------- Generate the Guile default module content
+
+src/guile.$(OBJEXT): src/gmk-default.h
+src/gmk-default.h: $(top_srcdir)/src/gmk-default.scm
+	(echo 'static const char *const GUILE_module_defn = " '\\ \
+	  && sed -e 's/;.*//' -e '/^[ \t]*$$/d' -e 's/"/\\"/g' -e 's/$$/ \\/' \
+		 $(top_srcdir)/src/gmk-default.scm \
+	  && echo '";') > src/gmk-default.h
+
+# --------------- Local DIST Section
+
+# Install the mk and tests subdirectories
+#
+dist-hook:
+	(cd $(top_srcdir); \
+	 sub=`find tests/scripts -follow \( -name .git -o -name .deps -o -name work -o -name .gitignore -o -name \*.orig -o -name \*.rej -o -name \*~ -o -name \*.out -o -name Makefile \) -prune -o -type f -print`; \
+	 $(AMTAR) chf - $$sub) \
+	| (cd $(distdir); $(AMTAR) xfBp -)
+
+
+# --------------- Local CHECK Section
+
+check-local: check-regression
+	@banner=" Regression PASSED: $(PACKAGE_STRING) ($(MAKE_HOST)) built with $(CC) "; \
+	dashes=`echo "$$banner" | sed s/./=/g`; \
+	echo; \
+	echo "$$dashes"; \
+	echo "$$banner"; \
+	echo "$$dashes"; \
+	echo
+
+# > check-regression
+#
+# Look for the make test suite, and run it if found and we can find perl.
+#
+MAKETESTFLAGS =
+
+.PHONY: check-regression
+
+GMK_OUTDIR = ..
+
+testlog = test-suite.log
+testresult = tests/.test-result
+errorpre = makeerror-$(PACKAGE_VERSION)-$(host_triplet)
+
+testfiles = $(testlog) $(testresult) $(errorfile)
+MOSTLYCLEANFILES = $(testfiles)
+
+errordetails =	config.status config.log src/config.h src/mkconfig.h \
+		$(testlog) tests/work
+
+# Create a 4-letter random sequence
+rand_value = c = "abcdefghijklmnopqrstuvwxyz0123456789"
+rand_char  = substr(c,int(rand()*36),1)
+rand_string = $(AWK) 'BEGIN{srand(); $(rand_value); print $(rand_char) "" $(rand_char) "" $(rand_char) "" $(rand_char);}'
+
+check-regression: tests/config-flags.pm
+	$(AM_V_at) rm -f $(testfiles)
+	$(AM_V_at) if test -f '$(top_srcdir)/tests/run_make_tests.pl'; then \
+	  ulimit -n 128; \
+	  if $(PERL) -v >/dev/null 2>&1; then \
+	    echo "cd tests && $(PERL) $(PERLFLAGS) $(abs_top_srcdir)/tests/run_make_tests.pl -make $(GMK_OUTDIR)/make$(EXEEXT) $(MAKETESTFLAGS)"; \
+	    (cd tests && $(PERL) $(PERLFLAGS) '$(abs_top_srcdir)/tests/run_make_tests.pl' -make '$(GMK_OUTDIR)/make$(EXEEXT)' $(MAKETESTFLAGS); echo $$? >.test-result) 2>&1 | tee $(testlog); \
+	    export TAR_OPTIONS='$(filter-out --sort%,$(TAR_OPTIONS))'; \
+	    er=$$(cat $(testresult)); if test "$$er" -ne 0; then \
+	      dirnm="$(errorpre)-$$($(rand_string))"; fnm="$$dirnm.tar.gz"; \
+	      rm -rf "$$dirnm"; mkdir "$$dirnm"; \
+	      $(AMTAR) chf - $(errordetails) | (cd "$$dirnm"; $(AMTAR) xf -); \
+	      $(AMTAR) chf - "$$dirnm" | eval GZIP= gzip $(GZIP_ENV) -c >"$$fnm"; \
+	      echo "*** Testing FAILED!  Details: $$fnm"; \
+	      echo '*** Please report to <$(PACKAGE_BUGREPORT)>'; echo; \
+	      exit $$er; \
+	    fi; \
+	  else \
+	    echo "Can't find a working Perl ($(PERL)); the test suite requires Perl."; \
+	  fi; \
+	else \
+	  echo "Can't find the $(PACKAGE_NAME) test suite ($(top_srcdir)/tests)."; \
+	fi
+
+
+# --------------- Maintainer's Section
+
+# Tell automake that I haven't forgotten about this file and it will be
+# created before we build a distribution (see maintMakefile in the Git
+# distribution).
+
+README:
+
+@MAINT_MAKEFILE@

README.DOS

@@ -0,0 +1,296 @@
+Port of GNU Make to 32-bit protected mode on MSDOS and MS-Windows.
+
+Builds with DJGPP v2 port of GNU C/C++ compiler and utilities.
+
+
+New (since 3.74) DOS-specific features:
+
+   1. Supports long filenames when run from DOS box on Windows 9x.
+
+   2. Supports both stock DOS COMMAND.COM and Unix-style shells
+      (details in 'Notes' below).
+
+   3. Supports DOS drive letters in dependencies and pattern rules.
+
+   4. Better support for DOS-style backslashes in pathnames (but see
+      'Notes' below).
+
+   5. The $(shell) built-in can run arbitrary complex commands,
+      including pipes and redirection, even when COMMAND.COM is your
+      shell.
+
+   6. Can be built without floating-point code (see below).
+
+   7. Supports signals in child programs and restores the original
+      directory if the child was interrupted.
+
+   8. Can be built without (a previous version of) Make.
+
+   9. The build process requires only standard tools.  (Optional
+      targets like "check:" still need additional programs, though,
+      see below.)
+
+  10. Beginning with v3.78, the test suite works in the DJGPP
+      environment (requires Perl and auxiliary tools; see below).
+
+
+To install a binary distribution:
+
+   Simply unzip the makNNNb.zip file (where NNN is the version number)
+   preserving the directory structure (-d switch if you use PKUNZIP).
+   If you are installing Make on Windows 9X or Windows 2000, use an
+   unzip program that supports long filenames in zip files.  After
+   unzipping, make sure the directory with make.exe is on your PATH,
+   and that's all you need to use Make.
+
+
+To build from sources:
+
+   1. Unzip the archive, preserving the directory structure (-d switch
+      if you use PKUNZIP).  If you build Make on Windows 9X or Windows
+      2000, use an unzip program that supports long filenames in zip
+      files.
+
+      If you are unpacking an official GNU source distribution, use
+      either DJTAR (which is part of the DJGPP development
+      environment), or the DJGPP port of GNU Tar.
+
+   2. If you have a working Make already, you can run:
+
+          make -f Basic.mk
+
+   3. If you don't have a working Make already you can bootstrap one
+      by running:
+
+          .\builddos.bat
+
+   4. If you are building from outside of the source directory, you
+      need to tell Make where the sources are, like this:
+
+          make -f c:/djgpp/gnu/make/Basic.mk SRCDIR=c:/djgpp/gnu/make
+
+      or:
+
+          c:/djgpp/gnu/make/builddos.bat c:/djgpp/gnu/make
+
+   5. To run the test suite, type "make check".  This requires a Unix
+      shell (I used the DJGPP port of Bash 2.03), Perl, Sed, Fileutils
+      and Sh-utils.
+
+   6. To install copy make.exe to the preferred location.
+
+      Since GNU Make 4.3, support for customized platform installations
+      has been removed.  If you'd like to collaborate on reinstating
+      these capabilities, contact bug-make@gnu.org.
+
+
+Notes:
+-----
+
+   1. The shell issue.
+
+      This is probably the most significant improvement, first
+      introduced in the port of GNU Make 3.75.
+
+      The original behavior of GNU Make is to invoke commands
+      directly, as long as they don't include characters special to
+      the shell or internal shell commands, because that is faster.
+      When shell features like redirection or filename wildcards are
+      involved, Make calls the shell.
+
+      This port supports both DOS shells (the stock COMMAND.COM and its
+      4DOS/NDOS replacements), and Unix-style shells (tested with the
+      venerable Stewartson's 'ms_sh' 2.3 and the DJGPP port of 'bash' by
+      Daisuke Aoyama <jack@st.rim.or.jp>).
+
+      When the $SHELL variable points to a Unix-style shell, Make
+      works just like you'd expect on Unix, calling the shell for any
+      command that involves characters special to the shell or
+      internal shell commands.  The only difference is that, since
+      there is no standard way to pass command lines longer than the
+      infamous DOS 126-character limit, this port of Make writes the
+      command line to a temporary disk file and then invokes the shell
+      on that file.
+
+      If $SHELL points to a DOS-style shell, however, Make will not
+      call it automatically, as it does with Unix shells.  Stock
+      COMMAND.COM is too dumb and would unnecessarily limit the
+      functionality of Make.  For example, you would not be able to
+      use long command lines in commands that use redirection or
+      pipes.  Therefore, when presented with a DOS shell, this port of
+      Make will emulate most of the shell functionality, like
+      redirection and pipes, and shall only call the shell when a
+      batch file or a command internal to the shell is invoked.  (Even
+      when a command is an internal shell command, Make will first
+      search the $PATH for it, so that if a Makefile calls 'mkdir',
+      you can install, say, a port of GNU 'mkdir' and have it called
+      in that case.)
+
+      The key to all this is the extended functionality of 'spawn' and
+      'system' functions from the DJGPP library; this port just calls
+      'system' where it would invoke the shell on Unix.  The most
+      important aspect of these functions is that they use a special
+      mechanism to pass long (up to 16KB) command lines to DJGPP
+      programs.  In addition, 'system' emulates some internal
+      commands, like 'cd' (so that you can now use forward slashes
+      with it, and can also change the drive if the directory is on
+      another drive).  Another aspect worth mentioning is that you can
+      call Unix shell scripts directly, provided that the shell whose
+      name is mentioned on the first line of the script is installed
+      anywhere along the $PATH.  It is impossible to tell here
+      everything about these functions; refer to the DJGPP library
+      reference for more details.
+
+      The $(shell) built-in is implemented in this port by calling
+      'popen'.  Since 'popen' calls 'system', the above considerations
+      are valid for $(shell) as well.  In particular, you can put
+      arbitrary complex commands, including pipes and redirection,
+      inside $(shell), which is in many cases a valid substitute for
+      the Unix-style command substitution (`command`) feature.
+
+
+   2. "SHELL=/bin/sh" -- or is it?
+
+      Many Unix Makefiles include a line which sets the SHELL, for
+      those versions of Make which don't have this as the default.
+      Since many DOS systems don't have 'sh' installed (in fact, most
+      of them don't even have a '/bin' directory), this port takes
+      such directives with a grain of salt.  It will only honor such a
+      directive if the basename of the shell name (like 'sh' in the
+      above example) can indeed be found in the directory that is
+      mentioned in the SHELL= line ('/bin' in the above example), or
+      in the current working directory, or anywhere on the $PATH (in
+      that order).  If the basename doesn't include a filename
+      extension, Make will look for any known extension that indicates
+      an executable file (.exe, .com, .bat, .btm, .sh, and even .sed
+      and .pl).  If any such file is found, then $SHELL will be
+      defined to the exact pathname of that file, and that shell will
+      hence be used for the rest of processing.  But if the named
+      shell is *not* found, the line which sets it will be effectively
+      ignored, leaving the value of $SHELL as it was before.  Since a
+      lot of decisions that this port makes depend on the gender of
+      the shell, I feel it doesn't make any sense to tailor Make's
+      behavior to a shell which is nowhere to be found.
+
+      Note that the above special handling of "SHELL=" only happens
+      for Makefiles; if you set $SHELL in the environment or on the
+      Make command line, you are expected to give the complete
+      pathname of the shell, including the filename extension.
+
+      The default value of $SHELL is computed as on Unix (see the Make
+      manual for details), except that if $SHELL is not defined in the
+      environment, $COMSPEC is used.  Also, if an environment variable
+      named $MAKESHELL is defined, it takes precedence over both
+      $COMSPEC and $SHELL.  Note that, unlike Unix, $SHELL in the
+      environment *is* used to set the shell (since on MSDOS, it's
+      unlikely that the interactive shell will not be suitable for
+      Makefile processing).
+
+      The bottom line is that you can now write Makefiles where some
+      of the targets require a real (i.e. Unix-like) shell, which will
+      nevertheless work when such shell is not available (provided, of
+      course, that the commands which should always work, don't
+      require such a shell).  More important, you can convert Unix
+      Makefiles to MSDOS and leave the line which sets the shell
+      intact, so that people who do have Unixy shell could use it for
+      targets which aren't converted to DOS (like 'install' and
+      'uninstall', for example).
+
+
+   3. Default directories.
+
+      GNU Make knows about standard directories where it searches for
+      library and include files mentioned in the Makefile.  Since
+      MSDOS machines don't have standard places for these, this port
+      will search ${DJDIR}/lib and ${DJDIR}/include respectively.
+      $DJDIR is defined automatically by the DJGPP startup code as the
+      root of the DJGPP installation tree (unless you've tampered with
+      the DJGPP.ENV file).  This should provide reasonable default
+      values, unless you moved parts of DJGPP to other directories.
+
+
+   4. Letter-case in filenames.
+
+      If you run Make on Windows 9x, you should be aware of the
+      letter-case issue.  Make is internally case-sensitive, but all
+      file operations are case-insensitive on Windows 9x, so
+      e.g. files 'FAQ', 'faq' and 'Faq' all refer to the same file, as
+      far as Windows is concerned.  The underlying DJGPP C library
+      functions honor the letter-case of the filenames they get from
+      the OS, except that by default, they down-case 8+3 DOS filenames
+      which are stored in upper case in the directory and would break
+      many Makefiles otherwise.  (The details of which filenames are
+      converted to lower case are explained in the DJGPP libc docs,
+      under the '_preserve_fncase' and '_lfn_gen_short_fname'
+      functions, but as a thumb rule, any filename that is stored in
+      upper case in the directory, is a valid DOS 8+3 filename and
+      doesn't include characters invalid on MSDOS FAT filesystems,
+      will be automatically down-cased.)  User reports that I have
+      indicate that this default behavior is generally what you'd
+      expect; however, your input is most welcome.
+
+      In any case, if you hit a situation where you must force Make to
+      get the 8+3 DOS filenames in upper case, set FNCASE=y in the
+      environment or in the Makefile.
+
+
+   5. DOS-style pathnames.
+
+      There are a lot of places throughout the program sources which
+      make implicit assumptions about the pathname syntax.  In
+      particular, the directories are assumed to be separated by '/',
+      and any pathname which doesn't begin with a '/' is assumed to be
+      relative to the current directory.  This port attempts to
+      support DOS-style pathnames which might include the drive letter
+      and use backslashes instead of forward slashes.  However, this
+      support is not complete; I feel that pursuing this support too
+      far might break some more important features, particularly if
+      you use a Unix-style shell (where a backslash is a quote
+      character).  I only consider support of backslashes desirable
+      because some Makefiles invoke non-DJGPP programs which don't
+      understand forward slashes.  A notable example of such programs
+      is the standard programs which come with MSDOS.  Otherwise, you
+      are advised to stay away from backslashes whenever possible.  In
+      particular, filename globbing won't work on pathnames with
+      backslashes, because the GNU 'glob' library doesn't support them
+      (backslash is special in filename wildcards, and I didn't want
+      to break that).
+
+      One feature which *does* work with backslashes is the filename-
+      related built-in functions such as $(dir), $(notdir), etc.
+      Drive letters in pathnames are also fully supported.
+
+
+
+Bug reports:
+-----------
+
+   Bugs that are clearly related to the MSDOS/DJGPP port should be
+   reported first on the comp.os.msdos.djgpp news group (if you cannot
+   post to Usenet groups, write to the DJGPP mailing list,
+   <djgpp@delorie.com>, which is an email gateway into the above news
+   group).  For other bugs, please follow the procedure explained in
+   the "Bugs" chapter of the Info docs.  If you don't have an Info
+   reader, look up that chapter in the 'make.i1' file with any text
+   browser/editor.
+
+
+   Enjoy,
+                        Eli Zaretskii <eliz@is.elta.co.il>
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1996-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.

README.OS2

@@ -0,0 +1,179 @@
+Port of GNU Make to OS/2.
+
+Features of GNU Make that do not work under OS/2:
+  - remote job execution
+  - dynamic load balancing
+
+
+Special features of the OS/2 version:
+
+Due to the fact that some people might want to use sh syntax in
+Makefiles while others might want to use OS/2's native shell cmd.exe,
+GNU Make supports both shell types. The following list defines the order
+that is used to determine the shell:
+
+ 1. The shell specified by the environment variable MAKESHELL.
+ 2. The shell specified by the SHELL variable within a Makefile. Like
+    Unix, SHELL is NOT taken from the environment.
+ 3. The shell specified by the COMSPEC environment variable.
+ 4. The shell specified by the OS2_SHELL environment variable.
+ 5. If none of the above is defined /bin/sh is used as default.  This
+    happens e.g. in the make testsuite.
+
+Note: - Points 3 and 4 can be turned off at compile time by adding
+        -DNO_CMD_DEFAULT to the CPPFLAGS.
+      - DOS support is not tested for EMX and therefore might not work.
+      - The UNIXROOT environment variable is supported to find /bin/sh
+        if it is not on the current drive.
+
+
+COMPILATION OF GNU MAKE FOR OS/2:
+
+I. ***** SPECIAL OPTIONS *****
+
+ - At compile time you can turn off that cmd is used as default shell
+   (but only /bin/sh). Simply set CPPFLAGS="-DNO_CMD_DEFAULT" and make
+   will not use cmd unless you cause it to do so by setting MAKESHELL to
+   cmd or by specifying SHELL=cmd in your Makefile.
+
+ - At compile time you can set CPPFLAGS="-DNO_CHDIR2" to turn off that
+   GNU Make prints drive letters. This is necessary if you want to run
+   the testsuite.
+
+
+II. ***** REQUIREMENTS FOR THE COMPILATION *****
+
+A standard Unix like build environment:
+
+ - sh compatible shell (ksh, bash, ash, but tested only with pdksh 5.2.14
+   release 2)
+   If you use pdksh it is recommended to update to 5.2.14 release 2. Older
+   versions may not work! You can get this version at
+   https://www.math.ohio-state.edu/~ilya/software/os2/pdksh-5.2.14-bin-2.zip
+ - GNU file utilities (make sure that install.exe from the file utilities
+   is in front of your PATH before X:\OS2\INSTALL\INSTALL.EXE. I recommend
+   also to change the filename to ginstall.exe instead of install.exe
+   to avoid confusion with X:\OS2\INSTALL\INSTALL.EXE)
+ - GNU shell utilities
+ - GNU text utilities
+ - gawk
+ - grep
+ - sed
+ - GNU Make 3.79.1 (special OS/2 patched version) or higher
+ - perl 5.005 or higher
+ - GNU texinfo (you can use 3.1 (gnuinfo.zip), but I recommend 4.0)
+
+If you want to recreate the configuration files (developers only!)
+you need also: GNU m4 1.4, autoconf 2.59, automake 1.9.6 (or compatible)
+
+
+III. ***** COMPILATION AND INSTALLATION *****
+
+ a) ** Developers only - Everyone else should skip this section **
+    To recreate the configuration files use:
+
+      export EMXSHELL=ksh
+      aclocal -I m4
+      automake
+      autoconf
+      autoheader
+
+
+b) Installation into x:/usr
+
+   Note: Although it is possible to compile make using "./configure",
+         "make", "make install" this is not recommended.  In particular,
+         you must ALWAYS use LDFLAGS="-Zstack 0x6000" because the default
+         stack size is far to small and make will not work properly!
+
+Recommended environment variables and installation options:
+
+    export ac_executable_extensions=".exe"
+    export CPPFLAGS="-D__ST_MT_ERRNO__"
+    export CFLAGS="-O2 -Zomf -Zmt"
+    export LDFLAGS="-Zcrtdll -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
+    export RANLIB="echo"
+    ./configure --prefix=x:/usr --infodir=x:/usr/share/info --mandir=x:/usr/share/man
+    make AR=emxomfar
+    make install
+
+Note: If you use gcc 2.9.x I recommend to set also LIBS="-lgcc"
+
+Note: You can add -DNO_CMD_DEFAULT and -DNO_CHDIR2 to CPPFLAGS.
+      See section I. for details.
+
+Note: If you use Open Watcom Linker instead of IBM Linker, remove
+      '-Zlinker /exepack:2' from LDFLAGS.
+
+
+IV. ***** NLS support *****
+
+GNU Make has NLS (National Language Support), with the following
+caveats:
+
+ a) It will only work with GNU gettext, and
+ b) GNU gettext support is not included in the GNU Make package.
+
+Therefore, if you wish to enable the internationalization features of
+GNU Make you must install GNU gettext on your system before configuring
+GNU Make.
+
+You can choose the languages to be installed. To install support for
+English, German and French only enter:
+
+  export LINGUAS="en de fr"
+
+If you don't specify LINGUAS all languages are installed.
+
+If you don't want NLS support (English only) use the option
+--disable-nls for the configure script.  Note if GNU gettext is not
+installed then NLS will not be enabled regardless of this flag.
+
+
+V. ***** Running the make test suite *****
+
+To run the included make test suite you have to set
+
+  CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
+
+before you compile make. This is due to some restrictions of the
+testsuite itself. -DNO_CMD_DEFAULT causes make to use /bin/sh as default
+shell in every case. Normally you could simply set MAKESHELL="/bin/sh"
+to do this but the testsuite ignores the environment. -DNO_CHDIR2 causes
+make not to use drive letters for directory names (i.e. _chdir2() and
+_getcwd2() are NOT used).  The testsuite interprets the whole output of
+make, especially statements like make[1]: Entering directory
+'C:/somewhere/make-3.79.1/tests' where the testsuite does not expect the
+drive letter. This would be interpreted as an error even if there is
+none.
+
+To run the testsuite do the following:
+
+  export CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
+  export CFLAGS="-Zomf -O2 -Zmt"
+  export LDFLAGS="-Zcrtdll -s -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
+  export RANLIB="echo"
+  ./configure --prefix=x:/usr --disable-nls
+  make AR=emxomfar
+  make check
+
+All tests should work fine with the exception of one of the "INCLUDE_DIRS"
+tests which will fail if your /usr/include directory is on a drive different
+from the make source tree.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 2003-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.

README.VMS

@@ -0,0 +1,515 @@
+Overview:                                                       -*-text-mode-*-
+---------
+
+  This version of GNU Make has been tested on:
+  OpenVMS V8.3/V8.4 (Alpha) and V8.4 (Integrity) AND V7.3 (VAX)
+
+  This version of GNU Make is intended to be run from DCL to run
+  make scripts with a special syntax that is described below.  It
+  likely will not be able to run unmodified Unix makefiles.
+
+  There is an older implementation of GNU Make that was ported to GNV.
+  Work is now in progress to merge that port to get a single version
+  of GNU Make available.  When that merge is done, GNU Make will auto
+  detect that it is running under a POSIX shell and then operate as close to
+  GNU Make on Unix as possible.
+
+  The descriptions below are for running GNU Make from DCL or equivalent.
+
+Recipe differences:
+-------------------
+
+  GNU Make for OpenVMS can not currently run native Unix make files because of
+  differences in the implementation.
+
+  I am trying to document the current behavior in this section.  This is based
+  on the information in the file NEWS. and running the test suite.
+  TODO: More tests are needed to validate and demonstrate the OpenVMS
+  expected behavior.
+
+  In some cases the older behavior of GNU Make when run from DCL is not
+  compatible with standard makefile behavior.
+
+  This behavior can be changed when running GNU Make from DCL by setting
+  either DCL symbols or logical names of the format GNV$.  The settings
+  are enabled with a string starting with one of '1', 'T', or 'E' for "1",
+  "TRUE", or "ENABLE".  They are disabled with a '0', 'F', or 'D' for "1",
+  "FALSE", or "DISABLE".  If they are not explicitly set to one of these
+  values, then they will be set to their default values.
+
+  The value of the setting DECC$FILENAME_UNIX_REPORT or
+  DECC$FILENAME_UNIX_ONLY will now cause the $(dir x) function to return
+  './' or '[]' as appropriate.
+
+  The name GNV$MAKE_OLD_VMS when enabled will cause GNU Make to behave as
+  much as the older method as can be done with out disabling VMS features.
+  When it is disabled GNU Make have the new behavior which more closely
+  matches Unix Make behavior.
+
+  The default is currently the old behavior when running GNU Make from DCL.
+  In the future this may change.  When running make from GNV Bash the new
+  behavior is the default.
+
+  This is a global setting that sets the default behavior for several other
+  options that can be individually changed.  Many of the individual settings
+  are to make it so that the self tests for GNU Make need less VMS specific
+  modifications.
+
+  The name GNV$MAKE_COMMA when enabled will cause GNU Make to expect a comma
+  for a path separator and use a comma for the separator for a list of files.
+  When disabled, it will cause GNU Make to use a colon for a path separator
+  and a space for the separator for a list of files.  The default is to be
+  enabled if the GNU Make is set to the older behavior.
+
+  The name GNV$MAKE_SHELL_SIM when enabled will cause GNU Make to try to
+  simulate a POSIX shell more closely.  The following behaviors occur:
+
+    * Single quotes are converted to double quotes and any double
+      quotes inside of them are doubled.  No environment variable expansion
+      is simulated.
+    * A exit command status will be converted to a POSIX Exit
+      where 0 is success and non-zero is failure.
+    * The $ character will cause environment variable expansion.
+    * Environment variables can be set on the command line before a command.
+
+  VMS generally uses logical name search lists instead of path variables
+  where the resolution is handled by VMS independent of the program.  Which
+  means that it is likely that nothing will notice if the default path
+  specifier is changed in the future.
+
+  Currently the built in VMS specific macros and recipes depend on the comma
+  being used as a file list separator.
+  TODO: Remove this dependency as other functions in GNU Make depend on a
+  space being used as a separator.
+
+  The format for recipes are a combination of Unix macros, a subset of
+  simulated UNIX commands, some shell emulation, and OpenVMS commands.
+  This makes the resulting makefiles unique to the OpenVMS port of GNU Make.
+
+  If you are creating a OpenVMS specific makefile from scratch, you should also
+  look at MMK (Madgoat Make) available at https://github.com/endlesssoftware/mmk
+  MMK uses full OpenVMS syntax and a persistent sub-process is used for the
+  recipe lines, allowing multiple line rules.
+
+  The default makefile search order is "makefile.vms", "gnumakefile",
+  "makefile".  TODO: See if that lookup is case sensitive.
+
+  When Make is invoked from DCL, it will create a foreign command
+  using the name of executable image, with any facility prefix removed,
+  for the duration of the make program, so it can be used internally
+  to recursively run make().  The macro MAKE_COMMAND will be set to
+  this foreign command.
+
+  When make is launched from an exec*() command from a C program,
+  the foreign command is not created.  The macro MAKE_COMMAND will be
+  set to the actual command passed as argv[0] to the exec*() function.
+
+  If the DCL symbol or logical name GNV$MAKE_USE_MCR exists, then
+  the macro MAKE_COMMAND will be set to be an "MCR" command with the
+  absolute path used by DCL to launch make.  The foreign command
+  will not be created.
+
+  The macro MAKE is set to be the same value as the macro MAKE_COMMAND
+  on all platforms.
+
+  Each recipe command is normally run as a separate spawned processes,
+  except for the cases documented below where a temporary DCL command
+  file may be used.
+
+  BUG: Testing has shown that the commands in the temporary command files
+  are not always created properly.  This issue is still under investigation.
+
+  Any macros marked as exported are temporarily created as DCL symbols
+  for child images to use.  DCL symbol substitution is not done with these
+  commands.
+  Untested: Symbol substitution.
+
+  When a temporary DCL command file is used, DCL symbol substitution
+  will work.
+
+  For VMS 7.3-1 and earlier, command lines are limited to 255 characters
+  or 1024 characters in a command file.
+  For VMS 7.3-2 and later, command lines are limited to 4059 characters
+  or 8192 characters in a command file.
+
+  VMS limits each token of a command line to 256 characters, and limits
+  a command line to 127 tokens.
+
+  Command lines above the limit length are written to a command file
+  in sys$scratch:.
+
+  In order to handle Unix style extensions to VMS DCL, GNU Make has
+  parsed the recipe commands and them modified them as needed.  The
+  parser has been re-written to resolve numerous bugs in handling
+  valid VMS syntax and potential buffer overruns.
+
+  The new parser may need whitespace characters where DCL does not require
+  it, and also may require that quotes are matched were DCL forgives if
+  they are not.  There is a small chance that existing VMS specific makefiles
+  will be affected.
+
+  The '<', '>' was previously implemented using command files.  Now
+  GNU Make will check to see if the is already a VMS "PIPE" command and
+  if it is not, will convert the command to a VMS "PIPE" command.
+
+  The '>>' redirection has been implemented by using a temporary command file.
+  This will be described later.
+
+  The DCL symbol or logical name GNV$MAKE_USE_CMD_FILE when set to a
+  string starting with one of '1','T', or 'E' for "1", "TRUE", or "ENABLE",
+  then temporary DCL command files are always used for running commands.
+
+  Some recipe strings with embedded new lines will not be handled correctly
+  when a command file is used.
+
+  GNU Make generally does text comparisons for the targets and sources.  The
+  make program itself can handle either Unix or OpenVMS format filenames, but
+  normally does not do any conversions from one format to another.
+  TODO: The OpenVMS format syntax handling is incomplete.
+  TODO: ODS-5 EFS support is missing.
+  BUG: The internal routines to convert filenames to and from OpenVMS format
+  do not work correctly.
+
+  Note: In the examples below, line continuations such as a backslash may have
+  been added to make the examples easier to read in this format.
+  BUG: That feature does not completely work at this time.
+
+  Since the OpenVMS utilities generally expect OpenVMS format paths, you will
+  usually have to use OpenVMS format paths for rules and targets.
+  BUG: Relative OpenVMS paths may not work in targets, especially combined
+  with vpaths.  This is because GNU Make will just concatenate the directories
+  as it does on Unix.
+
+  The variables $^ and $@ separate files with commas instead of spaces.
+  This is controlled by the name GNV$MAKE_COMMA as documented in the
+  previous section.
+
+  While this may seem the natural thing to do with OpenVMS, it actually
+  causes problems when trying to use other make functions that expect the
+  files to be separated by spaces.  If you run into this, you need the
+  following workaround to convert the output.
+  TODO: Look at have the $^ and $@ use spaces like on Unix and have
+  and easy to use function to do the conversions and have the built
+  in OpenVMS specific recipes and macros use it.
+
+  Example:
+
+comma := ,
+empty :=
+space := $(empty) $(empty)
+
+foo: $(addsuffix .3,$(subs $(comma),$(space),$^)
+
+
+  Makefile variables are looked up in the current environment. You can set
+  symbols or logicals in DCL and evaluate them in the Makefile via
+  $(<name-of-symbol-or-logical>).  Variables defined in the Makefile
+  override OpenVMS symbols/logicals.
+
+  OpenVMS logical and symbols names show up as "environment" using the
+  origin function.  when the "-e" option is specified, the origin function
+  shows them as "environment override".  On POSIX the test scripts indicate
+  that they should show up just as "environment".
+
+  When GNU Make reads in a symbol or logical name into the environment, it
+  converts any dollar signs found to double dollar signs for convenience in
+  using DCL symbols and logical names in recipes.  When GNU Make exports a
+  DCL symbol for a child process, if the first dollar sign found is followed
+  by second dollar sign, then all double dollar signs will be converted to
+  single dollar signs.
+
+  The variable $(ARCH) is predefined as IA64, ALPHA or VAX respectively.
+  Makefiles for different OpenVMS systems can now be written by checking
+  $(ARCH).  Since IA64 and ALPHA are similar, usually just a check for
+  VAX or not VAX is sufficient.
+
+  You may have to update makefiles that assume VAX if not ALPHA.
+
+ifeq ($(ARCH),VAX)
+  $(ECHO) "On the VAX"
+else
+  $(ECHO) "On the ALPHA  or IA64"
+endif
+
+  Empty commands are handled correctly and don't end in a new DCL process.
+
+  The exit command needs to have OpenVMS exit codes.  To pass a POSIX code
+  back to the make script, you need to encode it by multiplying it by 8
+  and then adding %x1035a002 for a failure code and %x1035a001 for a
+  success.  Make will interpret any POSIX code other than 0 as a failure.
+  TODO: Add an option have simulate POSIX exit commands in recipes.
+
+  Lexical functions can be used in pipes to simulate shell file test rules.
+
+  Example:
+
+  POSIX:
+b : c ; [ -f $@ ] || echo >> $@
+
+  OpenVMS:
+b : c ; if f$$search("$@") then pipe open/append xx $@ ; write xx "" ; close xx
+
+
+  You can also use pipes and turning messages off to silently test for a
+  failure.
+
+x = %x1035a00a
+
+%.b : %.c
+<tab>pipe set mess/nofac/noiden/nosev/notext ; type $^/output=$@ || exit $(x)
+
+
+Runtime issues:
+
+  The OpenVMS C Runtime has a convention for encoding a POSIX exit status into
+  to OpenVMS exit codes.  These status codes will have the hex value of
+  0x35a000.  OpenVMS exit code may also have a hex value of %x10000000 set on
+  them.  This is a flag to tell DCL not to write out the exit code.
+
+  To convert an OpenVMS encoded POSIX exit status code to the original code
+  You subtract %x35a000 and any flags from the OpenVMS code and divide it by 8.
+
+  WARNING: Backward-incompatibility!
+  The make program exit now returns the same encoded POSIX exit code as on
+  Unix. Previous versions returned the OpenVMS exit status code if that is what
+  caused the recipe to fail.
+  TODO: Provide a way for scripts calling make to obtain that OpenVMS status
+  code.
+
+  Make internally has two error codes, MAKE_FAILURE and MAKE_TROUBLE.  These
+  will have the error "-E-" severity set on exit.
+
+  MAKE_TROUBLE is returned only if the option "-q" or "--question" is used and
+  has a POSIX value of 1 and an OpenVMS status of %x1035a00a.
+
+  MAKE_FAILURE has a POSIX value of 2 and an OpenVMS status of %x1035a012.
+
+  Output from GNU Make may have single quotes around some values where on
+  other platforms it does not.  Also output that would be in double quotes
+  on some platforms may show up as single quotes on VMS.
+
+  There may be extra blank lines in the output on VMS.
+  https://savannah.gnu.org/bugs/?func=detailitem&item_id=41760
+
+  There may be a "Waiting for unfinished jobs..." show up in the output.
+
+  Error messages generated by Make or Unix utilities may slightly vary from
+  POSIX platforms.  Typically the case may be different.
+
+  When make deletes files, on POSIX platforms it writes out 'rm' and the list
+  of files.  On VMS, only the files are written out, one per line.
+  TODO: VMS
+
+  There may be extra leading white space or additional or missing whitespace
+  in the output of recipes.
+
+  GNU Make uses sys$scratch: for the tempfiles that it creates.
+
+  The OpenVMS CRTL library maps /tmp to sys$scratch if the TMP: logical name
+  does not exist.  As the CRTL may use both sys$scratch: and /tmp internally,
+  if you define the TMP logical name to be different than SYS$SCRATCH:,
+  you may end up with only some temporary files in TMP: and some in SYS$SCRATCH:
+
+  The default include directory for including other makefiles is
+  SYS$SYSROOT:[SYSLIB] (I don't remember why I didn't just use
+  SYS$LIBRARY: instead; maybe it wouldn't work that way).
+  TODO:  A better default may be desired.
+
+  If the device for a file in a recipe does not exist, on OpenVMS an error
+  message of "stat: <file>: no such device or address" will be output.
+
+  Make ignores success, informational, or warning errors (-S-, -I-, or
+  -W-).  But it will stop on -E- and -F- errors. (unless you do something
+  to override this in your makefile, or whatever).
+
+
+Unix compatibility features:
+----------------------------
+
+  If the command 'echo' is seen, any single quotes on the line will be
+  converted to double quotes.
+
+  The variable $(CD) is implemented as a built in Change Directory
+  command. This invokes the 'builtin_cd'  Executing a 'set default'
+  recipe doesn't do the trick, since it only affects the sub-process
+  spawned for that command.
+
+  The 'builtin_cd' is generally expected to be on its own line.
+  The 'builtin_cd' either from the expansion of $(CD) or directly
+  put in a recipe line will be executed before any other commands in
+  that recipe line.  DCL parameter substitution will not work for the
+  'builtin_cd' command.
+
+  Putting a 'builtin_cd' in a pipeline or an IF-THEN line should not be
+  done because the 'builtin_cd' is always executed
+  and executed first.  The directory change is persistent.
+
+  Unix shell style I/O redirection is supported. You can now write lines like:
+  "<tab>mcr sys$disk:[]program.exe < input.txt > output.txt &> error.txt"
+
+  POSIX shells have ":" as a null command.  These are now handled.
+  https://savannah.gnu.org/bugs/index.php?41761
+
+  A note on appending the redirected output.  A simple mechanism is
+  implemented to make ">>" work in action lines. In OpenVMS there is no simple
+  feature like ">>" to have DCL command or program output redirected and
+  appended to a file. GNU Make for OpenVMS implements the redirection
+  of ">>" by using a command procedure.
+
+  The current algorithm creates the output file if it does not exist and
+  then uses the DCL open/append to extend it.  SYS$OUTPUT is then directed
+  to that file.
+
+  The implementation supports only one redirected append output to a file
+  and that redirection is done before any other commands in that line
+  are executed, so it redirects all output for that command.
+
+  The older implementation wrote the output to a temporary file in
+  in sys$scratch: and then attempted to append the file to the existing file.
+  The temporary file names looked like "CMDxxxxx.". Any time the created
+  command procedure can not complete, this happens. Pressing CTRL+Y to
+  abort make is one case.
+
+  In case of CTRL+Y the associated command procedure is left in SYS$SCRATCH:.
+  The command procedures will be named gnv$make_cmd*.com.
+
+  The CtrlY handler now uses $delprc to delete all children. This way also
+  actions with DCL commands will be stopped. As before the CtrlY handler
+  then sends SIGQUIT to itself, which is handled in common code.
+
+  Temporary command files are now deleted in the OpenVMS child termination
+  handler. That deletes them even if a CTRL+C was pressed.
+  TODO: Does the previous section about >> leaving files still apply?
+
+  The behavior of pressing CTRL+C is not changed. It still has only an effect,
+  after the current action is terminated. If that doesn't happen or takes too
+  long, CTRL+Y should be used instead.
+
+
+Build Options:
+
+  Added support to have case sensitive targets and dependencies but to
+  still use case blind file names. This is especially useful for Java
+  makefiles on VMS:
+
+<TAB>.SUFFIXES :
+<TAB>.SUFFIXES : .class .java
+<TAB>.java.class :
+<TAB><TAB>javac "$<"
+<TAB>HelloWorld.class :      HelloWorld.java
+
+  A new macro WANT_CASE_SENSITIVE_TARGETS in config.h-vms was introduced.
+  It needs to be enabled to get this feature; default is disabled.
+  TODO: This should be a run-time setting based on if the process
+  has been set to case sensitive.
+
+
+Unimplemented functionality:
+
+  The new feature "Loadable objects" is not yet supported. If you need it,
+  please send a change request or submit a bug report.
+
+  The new option --output-sync (-O) is accepted but has no effect: GNU Make
+  for OpenVMS does not support running multiple commands simultaneously.
+
+
+Self test failures and todos:
+-----------------------------
+
+  The test harness can not handle testing some of the VMS specific modes
+  because of the features needed for to be set for the Perl to run.
+  Need to find a way to set the VMS features before running make as a
+  child.
+
+  GNU Make was not currently translating the OpenVMS encoded POSIX values
+  returned to it back to the POSIX values.  I have temporarily modified the
+  Perl test script to compensate for it.  This should be being handled
+  internally to Make.
+  TODO: Verify and update the Perl test script.
+
+  The features/parallelism test was failing. OpenVMS is executing the rules
+  in sequence not in parallel as this feature was not implemented.
+  GNU Make on VMS no longer claims it is implemented.
+  TODO: Implement it.
+
+  Symlink support is not present.  Symlinks are supported by OpenVMS 8.3 and
+  later.
+
+  Error messages should be suppressed with the "-" at the beginning of a line.
+  On openVMS they were showing up.  TODO: Is this still an issue?
+
+  The internal vmsify and unixify OpenVMS to/from UNIX are not handling logical
+  names correctly.
+
+
+Build instructions:
+-------------------
+
+  Don't use the HP C V7.2-001 compiler, which has an incompatible change
+  how __STDC__ is defined. This results at least in compile time warnings.
+
+Make a 1st version
+       $ @makefile.com  ! ignore any compiler and/or linker warning
+       $ copy make.exe 1st-make.exe
+
+  Use the 1st version to generate a 2nd version as a test.
+       $ mc sys$disk:[]1st-make clean  ! ignore any file not found messages
+       $ mc sys$disk:[]1st-make
+
+  Verify your 2nd version by building Make again.
+       $ copy make.exe 2nd-make.exe
+       $ mc sys$disk:[]2nd-make clean
+       $ mc sys$disk:[]2nd-make
+
+
+Running the tests:
+------------------
+
+  Running the tests on OpenVMS requires the following software to be installed
+  as most of the tests are Unix oriented.
+
+  * Perl 5.18 or later.
+    https://sourceforge.net/projects/vmsperlkit/files/
+  * GNV 2.1.3 + Updates including a minimum of:
+    * Bash 4.3.30
+    * ld_tools 3.0.2
+    * coreutils 8.21
+   https://sourceforge.net/p/gnv/wiki/InstallingGNVPackages/
+   https://sourceforge.net/projects/gnv/files/
+
+   As the test scripts need to create some foreign commands that persist
+   after the test is run, it is recommend that either you use a sub-process or
+   a dedicated login to run the tests.
+
+   To get detailed information for running the tests:
+
+   $ set default [.tests]
+   $ @run_make_tests help
+
+   Running the script with no parameters will run all the tests.
+
+   After the the test script has been run once in a session, assuming
+   that you built make in sys$disk:[make], you can redefined the
+   "bin" logical name as follows:
+
+   $ define bin sys$disk:[make],gnv$gnu:[bin]
+
+   Then you can use Perl to run the scripts.
+
+   $ perl run_make_tests.pl
+
+
+Acknowledgments:
+----------------
+
+See NEWS. for details of past changes.
+
+  These are the currently known contributors to this port.
+
+  Hartmut Becker
+  John Malmberg
+  Michael Gehre
+  John Eisenbraun
+  Klaus Kaempf
+  Mike Moretti
+  John W. Eaton

README.W32

@@ -0,0 +1,363 @@
+This version of GNU Make has been tested on:
+  Microsoft Windows 2000/XP/2003/Vista/7/8/10/11
+It has also been used on Windows 95/98/NT, and on OS/2.
+
+It builds with the MinGW port of GCC (tested with GCC 3.4.2, 4.8.1,
+and 4.9.3).
+
+It also builds with MSVC 2.x, 4.x, 5.x, 6.x, 2005, 2008, 2010, 2012,
+2013, and 2015 as well as with .NET 7.x and .NET 2003.
+
+Building with Guile is supported (tested with Guile 2.0.x).  To build
+with Guile, you will need, in addition to Guile itself, its dependency
+libraries and the pkg-config program.  The latter is used to figure out
+which compilation and link switches and libraries need to be mentioned
+on the compiler command lines to correctly link with Guile.  A Windows
+port of pkg-config can be found on ezwinports site:
+
+  https://sourceforge.net/projects/ezwinports/
+
+The libraries on which Guile depends can vary depending on your
+version and build of Guile.  At the very least, the Boehm's GC library
+will be needed, and typically also GNU MP, libffi, libunistring, and
+libtool's libltdl.  Whoever built the port of Guile you have should
+also provide you with these dependencies or a URL where to download
+them.  A precompiled 32-bit Windows build of Guile is available from
+the ezwinports site mentioned above.
+
+The Windows port of GNU Make is maintained jointly by various people.
+It was originally made by Rob Tulloh.
+It is currently maintained by Eli Zaretskii.
+
+
+Do this first, regardless of the build method you choose:
+---------------------------------------------------------
+
+ 1. If you have special requirements, edit config.h.W32 to your liking
+    (especially the shell-related defines, or HAVE_CASE_INSENSITIVE_FS which
+    corresponds to './configure --enable-case-insensitive-file-system').  We
+    don't recommend to define HAVE_CASE_INSENSITIVE_FS, but you may wish to
+    consider that if you have a lot of files whose names are in upper case,
+    while Makefile rules are written for lower-case versions.
+
+    If you don't have special requirements no changes are needed.
+
+
+Building with (MinGW-)GCC using build_w32.bat
+---------------------------------------------
+
+ 2. Open a W32 command prompt for your installed (MinGW-)GCC, setup a
+    correct PATH and other environment variables for it, then execute ...
+
+        .\build_w32.bat gcc
+
+    This produces gnumake.exe in the GccRel directory.
+
+    If you want a version of GNU Make built with debugging enabled,
+    add the --debug option.  Output goes into the GccDebug directory.
+
+    The batch file will probe for Guile installation, and will build
+    gnumake.exe with Guile if it finds it.  If you have Guile
+    installed, but want to build Make without Guile support, type
+
+        .\build_w32.bat --without-guile gcc
+
+
+Building with (MSVC++-)cl using build_w32.bat
+---------------------------------------------
+
+ 2. Open a command shell, then execute ...
+
+        .\build_w32.bat
+
+    This produces a 64bit Release build of gnumake.exe in .\WinRel, using
+    the compiler found on the %Path%.  If no compiler is found, the batch
+    file will probe your system and choose the newest MSVC version it can
+    find.
+
+    If you want a 32bit version of GNU Make, add the --x86 option.
+
+    If you want a Debug build of GNU Make, add the --debug option.  Output
+    will go into the .\WinDebug directory.
+
+    The batch file will probe for Guile installation, and will build
+    gnumake.exe with Guile if it finds it.  If Guile is installed,
+    but you prefer to build GNU Make without Guile support, add the
+    --without-guile option.
+
+
+Building with (MinGW-)GCC using GNU Make
+----------------------------------------
+
+ 2. If you already have a version of GNU Make available you can use it
+    to build this version.  Open a W32 command prompt for your installed
+    (MinGW-)GCC, setup a correct PATH and other environment variables
+    for it, then execute ...
+
+        make -f Basic.mk TOOLCHAIN=gcc
+
+    This produces GccRel\gnumake.exe.
+    If you want a version of GNU Make built with debugging enabled,
+    add the TARGET_TYPE=debug option:
+
+        make -f Basic.mk TOOLCHAIN=gcc TARGET_TYPE=debug
+
+    The makefile doesn't support Guile integration.  Use build_w32.bat
+    if you want to build with Guile support.
+
+
+Building with (MSVC++-)cl using GNU Make
+----------------------------------------
+
+ 2. If you already have a version of GNU Make available you can use it
+    to build this version.  Open a W32 command prompt for your installed
+    (MSVC++-)cl, setup a correct PATH and other environment variables
+    for it (usually via executing vcvars32.bat or vsvars32.bat from the
+    cl-installation, or using a corresponding start menu entry from the
+    cl-installation), then execute ...
+
+        make -f Basic.mk
+
+    This produces an optimized WinRel/gnumake.exe.
+    If you want a version of GNU Make built with debugging enabled,
+    add the TARGET_TYPE=debug option:
+
+        make -f Basic.mk TARGET_TYPE=debug
+
+    The makefile doesn't support Guile integration.  Use build_w32.bat
+    if you want to build with Guile support.
+
+
+Running the test suite
+----------------------
+
+ 3. You will need an installation of Perl.  Be sure to use a relatively
+    modern version: older versions will sometimes throw spurious errors.
+
+    To run the suite after building using GNU Make, use:
+
+        make -f Basic.mk check
+
+    Alternatively if you'd like to run tests by hand, use:
+
+        cd tests
+        .\run_make_tests.bat -make <path-to-make>
+
+    I've found <path-to-make> seems to want forward-slashes in the path.
+    For example if building with .\build_w32.bat non-debug, use:
+
+        cd tests
+        .\run_make_tests.bat -make ../WinRel/gnumake.exe
+
+    I've tested this with the MSYS2 shell and POSIX tools installation
+    that you get by installing Git for Windows.
+
+
+
+-------------------
+-- Notes/Caveats --
+-------------------
+
+GNU Make on Windows 32-bit platforms:
+
+        This version of make is ported natively to Windows32 platforms
+        (Windows NT 3.51, Windows NT 4.0, Windows 2000, Windows XP,
+        Windows 95, and Windows 98). It does not rely on any 3rd party
+        software or add-on packages for building. The only thing
+        needed is a Windows compiler.  Two compilers supported
+        officially are the MinGW port of GNU GCC, and the various
+        versions of the Microsoft C compiler.
+
+        Do not confuse this port of GNU Make with other Windows32 projects
+        which provide a GNU Make binary. These are separate projects
+        and are not connected to this port effort.
+
+GNU Make and sh.exe:
+
+        This port prefers if you have a working sh.exe somewhere on
+        your system. If you don't have sh.exe, the port falls back to
+        MSDOS mode for launching programs (via a batch file).  The
+        MSDOS mode style execution has not been tested that carefully
+        though (The author uses GNU bash as sh.exe).
+
+        There are very few true ports of Bourne shell for NT right now.
+        There is a version of GNU bash available from Cygnus "Cygwin"
+        porting effort (https://www.cygwin.com/).
+        Other possibilities are the MKS version of sh.exe, or building
+        your own with a package like NutCracker (DataFocus) or Portage
+        (Consensys).  Also MinGW includes sh.
+
+GNU Make and brain-dead shells (BATCH_MODE_ONLY_SHELL):
+
+        Some versions of Bourne shell do not behave well when invoked
+        as 'sh -c' from CreateProcess().  The main problem is they seem
+        to have a hard time handling quoted strings correctly. This can
+        be circumvented by writing commands to be executed to a batch
+        file and then executing the command by calling 'sh file'.
+
+        To work around this difficulty, this version of make supports
+        a batch mode.  When BATCH_MODE_ONLY_SHELL is defined at compile
+        time, make forces all command lines to be executed via script
+        files instead of by command line.  In this mode you must have a
+        working sh.exe in order to use parallel builds (-j).
+
+        A native Windows32 system with no Bourne shell will also run
+        in batch mode.  All command lines will be put into batch files
+        and executed via $(COMSPEC) (%COMSPEC%).  However, parallel
+        builds ARE supported with Windows shells (cmd.exe and
+        command.com).  See the next section about some peculiarities
+        of parallel builds on Windows.
+
+Support for parallel builds
+
+        Parallel builds (-jN) are supported in this port.  The number of
+        concurrent processes has a hard limit of 4095.
+
+GNU Make and Cygnus GNU Windows32 tools:
+
+        Good news! Make now has native support for Cygwin sh. To enable,
+        define the HAVE_CYGWIN_SHELL in config.h and rebuild make
+        from scratch. This version of make tested with B20.1 of Cygwin.
+        Do not define BATCH_MODE_ONLY_SHELL if you use HAVE_CYGWIN_SHELL.
+
+GNU Make and the MKS shell:
+
+        There is now semi-official support for the MKS shell. To turn this
+        support on, define HAVE_MKS_SHELL in the config.h.W32 before you
+        build make.  Do not define BATCH_MODE_ONLY_SHELL if you turn
+        on HAVE_MKS_SHELL.
+
+GNU Make handling of drive letters in pathnames (PATH, vpath, VPATH):
+
+        There is a caveat that should be noted with respect to handling
+        single character pathnames on Windows systems.  When colon is
+        used in PATH variables, make tries to be smart about knowing when
+        you are using colon as a separator versus colon as a drive
+        letter.  Unfortunately, something as simple as the string 'x:/'
+        could be interpreted 2 ways: (x and /) or (x:/).
+
+        Make chooses to interpret a letter plus colon (e.g. x:/) as a
+        drive letter pathname.  If it is necessary to use single
+        character directories in paths (VPATH, vpath, Path, PATH), the
+        user must do one of two things:
+
+         a. Use semicolon as the separator to disambiguate colon. For
+            example use 'x;/' if you want to say 'x' and '/' are
+            separate components.
+
+         b. Qualify the directory name so that there is more than
+            one character in the path(s) used. For example, none
+            of these settings are ambiguous:
+
+              ./x:./y
+              /some/path/x:/some/path/y
+              x:/some/path/x:x:/some/path/y
+
+        Please note that you are free to mix colon and semi-colon in the
+        specification of paths.  Make is able to figure out the intended
+        result and convert the paths internally to the format needed
+        when interacting with the operating system, providing the path
+        is not within quotes, e.g. "x:/test/test.c".
+
+        You are encouraged to use colon as the separator character.
+        This should ease the pain of deciding how to handle various path
+        problems which exist between platforms.  If colon is used on
+        both Unix and Windows systems, then no ifdef'ing will be
+        necessary in the makefile source.
+
+Pathnames and white space:
+
+        Unlike Unix, Windows 95/NT systems encourage pathnames which
+        contain white space (e.g. C:\Program Files\). These sorts of
+        pathnames are valid on Unix too, but are never encouraged.
+        There is at least one place in make (VPATH/vpath handling) where
+        paths containing white space will simply not work. There may be
+        others too. I chose to not try and port make in such a way so
+        that these sorts of paths could be handled. I offer these
+        suggestions as workarounds:
+
+                1. Use 8.3 notation. i.e. "x:/long~1/", which is actually
+                   "x:\longpathtest".  Type "dir /x" to view these filenames
+                   within the cmd.exe shell.
+                2. Rename the directory so it does not contain white space.
+
+        If you are unhappy with this choice, this is free software
+        and you are free to take a crack at making this work. The code
+        in w32/pathstuff.c and vpath.c would be the places to start.
+
+Pathnames and Case insensitivity:
+
+        Unlike Unix, Windows 95/NT systems are case insensitive but case
+        preserving.  For example if you tell the file system to create a
+        file named "Target", it will preserve the case.  Subsequent access to
+        the file with other case permutations will succeed (i.e. opening a
+        file named "target" or "TARGET" will open the file "Target").
+
+        By default, GNU Make retains its case sensitivity when comparing
+        target names and existing files or directories.  It can be
+        configured, however, into a case preserving and case insensitive
+        mode by adding a define for HAVE_CASE_INSENSITIVE_FS to
+        config.h.W32.
+
+        For example, the following makefile will create a file named
+        Target in the directory subdir which will subsequently be used
+        to satisfy the dependency of SUBDIR/DepTarget on SubDir/TARGET.
+        Without HAVE_CASE_INSENSITIVE_FS configured, the dependency link
+        will not be made:
+
+        subdir/Target:
+                touch $@
+
+        SUBDIR/DepTarget: SubDir/TARGET
+                cp $^ $@
+
+        Reliance on this behavior also eliminates the ability of GNU Make
+        to use case in comparison of matching rules.  For example, it is
+        not possible to set up a C++ rule using %.C that is different
+        than a C rule using %.c.  GNU Make will consider these to be the
+        same rule and will issue a warning.
+
+SAMBA/NTFS/VFAT:
+
+        I have not had any success building the debug version of this
+        package using SAMBA as my file server. The reason seems to be
+        related to the way VC++ 4.0 changes the case name of the pdb
+        filename it is passed on the command line. It seems to change
+        the name always to to lower case. I contend that the VC++
+        compiler should not change the casename of files that are passed
+        as arguments on the command line. I don't think this was a
+        problem in MSVC 2.x, but I know it is a problem in MSVC 4.x.
+
+        The package builds fine on VFAT and NTFS filesystems.
+
+        Most all of the development I have done to date has been using
+        NTFS and long file names. I have not done any considerable work
+        under VFAT. VFAT users may wish to be aware that this port of
+        make does respect case sensitivity.
+
+FAT:
+
+        Version 3.76 added support for FAT filesystems. Make works
+        around some difficulties with stat'ing of files and caching of
+        filenames and directories internally.
+
+Bug reports:
+
+        Please submit bugs via the normal bug reporting mechanism which
+        is described in the GNU Make manual and the base README.
+
+-------------------------------------------------------------------------------
+Copyright (C) 1996-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.

README.customs

@@ -0,0 +1,112 @@
+                                                            -*-indented-text-*-
+
+GNU Make can utilize the Customs library, distributed with Pmake, to
+provide builds distributed across multiple hosts.
+
+In order to utilize this capability, you must first download and build
+the Customs library.  It is contained in the Pmake distribution, which
+can be obtained at:
+
+  ftp://ftp.icsi.berkeley.edu/pub/ai/stolcke/software/
+
+This integration was tested (superficially) with Pmake 2.1.33.
+
+
+BUILDING CUSTOMS
+----------------
+
+First, build pmake and Customs.  You need to build pmake first, because
+Customs require pmake to build.  Unfortunately, this is not trivial;
+please see the pmake and Customs documentation for details.  The best
+place to look for instructions is in the pmake-2.1.33/INSTALL file.
+
+Note that the 2.1.33 Pmake distribution comes with a set of patches to
+GNU Make, distributed in the pmake-2.1.33/etc/gnumake/ directory.  These
+patches are based on GNU Make 3.75 (there are patches for earlier
+versions of GNU Make, also).  The parts of this patchfile which relate
+directly to Customs support have already been incorporated into this
+version of GNU Make, so you should _NOT_ apply the patch file.
+
+However, there are a few non-Customs specific (as far as I could tell)
+changes here which are not incorporated (for example, the modification
+to try expanding -lfoo to libfoo.so).  If you rely on these changes
+you'll need to re-apply them by hand.
+
+Install the Customs library and header files according to the
+documentation.  You should also install the man pages (contrary to
+comments in the documentation, they weren't installed automatically for
+me; I had to cd to the 'pmake-2.1.33/doc' directory and run 'pmake
+install' there directly).
+
+
+BUILDING GNU MAKE
+-----------------
+
+Once you've installed Customs, you can build GNU Make to use it.  When
+configuring GNU Make, merely use the '--with-customs=DIR' option.
+Provide the directory containing the 'lib' and 'include/customs'
+subdirectories as DIR.  For example, if you installed the customs
+library in /usr/local/lib and the headers in /usr/local/include/customs,
+then you'd pass '--with-customs=/usr/local' as an option to configure.
+
+Run make (or use build.sh) normally to build GNU Make as described in
+the INSTALL file.
+
+See the documentation for Customs for information on starting and
+configuring Customs.
+
+
+INVOKING CUSTOMS-IZED GNU MAKE
+-----------------------------
+
+One thing you should be aware of is that the default build environment
+for Customs requires root permissions.  Practically, this means that GNU
+make must be installed setuid root to use Customs.
+
+If you don't want to do this, you can build Customs such that root
+permissions are not necessary.  Andreas Stolcke <stolcke@speech.sri.com>
+writes:
+
+ > pmake, gnumake or any other customs client program is not required to
+ > be suid root if customs was compiled WITHOUT the USE_RESERVED_PORTS
+ > option in customs/config.h.  Make sure the "customs" service in
+ > /etc/services is defined accordingly (port 8231 instead of 1001).
+
+ > Not using USE_RESERVED_PORTS means that a user with programming
+ > skills could impersonate another user by writing a fake customs
+ > client that pretends to be someone other than himself.  See the
+ > discussion in etc/SECURITY.
+
+
+PROBLEMS
+--------
+
+SunOS 4.1.x:
+  The customs/sprite.h header file #includes the <malloc.h> header
+  files; this conflicts with GNU Make's configuration so you'll get a
+  compile error if you use GCC (or any other ANSI-capable C compiler).
+
+  I commented out the #include in sprite.h:107:
+
+    #if defined(sun) || defined(ultrix) || defined(hpux) || defined(sgi)
+    /* #include <malloc.h> */
+    #else
+
+  YMMV.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1998-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.

README.git

@@ -0,0 +1,409 @@
+                                                                     -*-text-*-
+
+-------------------------------------------------------------------------------
+Copyright (C) 2002-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.
+-------------------------------------------------------------------------------
+
+Obtaining Git Code
+------------------
+
+This seems redundant, since if you're reading this you most likely have
+already performed this step; however, for completeness, you can obtain the GNU
+make source code via Git from the FSF's Savannah project
+<https://savannah.gnu.org/projects/make/>:
+
+  $ git clone git://git.savannah.gnu.org/make.git
+
+
+Changes using Git
+-----------------
+
+If you do not have push privileges to the GNU Make Git repository, see the
+README file section "Submitting Patches" for information.
+
+If you have push privileges to the GNU Make Git repository keep this
+information in mind:
+
+Starting with GNU Make 4.0 we no longer keep a separate ChangeLog file in
+source control.  We use the Gnulib git-to-changelog conversion script to
+convert the Git comments into ChangeLog-style entries for release.  As a
+result, please format your Git comments carefully so they will look clean
+after conversion.  In particular, each line of your comment will have a TAB
+added before it so be sure your comment lines are not longer than 72
+characters; prefer 70 or less.  Please use standard ChangeLog formats for
+your commit messages (sans the leading TAB of course).
+
+Rule #1: Don't rewrite pushed history on master (no "git push --force").
+Rule #2: Feel free to rewrite pushed history on personal branches.
+Rule #3: Squash-merge or rebase + merge --ff-only, rather than merging from
+         personal branches into master.
+
+Typical simple workflow might be:
+
+  * Edit files / make / make check
+  * Use "git status" and "git diff" to verify your changes
+  * Use "git add" to stage the changes you want to make
+  * Use "git commit" to commit the staged changes to your local repository
+  * Use "git pull -r" to accept new changes from the upstream repository
+  * Use "git push" to push your commits back to the upstream repository
+
+For Emacs users, there are many options for Git integration but I strongly
+recommend Magit: https://magit.vc/  It makes the workflow much clearer, and
+has advanced features such as constructing multiple commits from various files
+and even from different diff chunks in the same file.  There is a video
+available which helps a lot.
+
+
+Coding Standards
+----------------
+
+GNU Make code adheres to the GNU Coding Standards.  Please use only spaces and
+no TAB characters in source code.
+
+Additionally, GNU Make is a foundational bootstrap package for the GNU
+project; as such it is conservative about language features it expects.
+However, GNU Make does rely on the Gnulib portability library, and Gnulib
+currently requires a ISO C99 compiler.  So features in ISO C99 can be
+assumed.
+
+
+Building From Git for POSIX
+---------------------------
+
+To build GNU Make from Git on POSIX systems such as GNU/Linux, you will
+need to install the following extra software:
+
+* autoconf >= 2.69
+* automake >= 1.16.1
+* autopoint
+* texinfo (for makeinfo)
+* gettext
+* pkg-config
+* GCC
+* GNU Make (POSIX make is not sufficient)
+
+And any tools that those utilities require (GNU m4, etc.)
+
+To run the tests you must install Perl.
+
+To create dist files you will additionally need:
+
+* lzip (to create tar.lz dist files)
+* texlive (or some other TeX package)
+
+GNU Make requires Gnulib to provide some facilities.  If you want to maintain
+a local installation of gnulib you can set GNULIB_SRCDIR to point to it.
+Otherwise, ./bootstrap will obtain a clone for you.
+
+Due to issues with gnulib's getloadavg, you must have automake 1.16.1 or
+above.  This version may not yet be available through GNU/Linux package
+managers.  If you need to install from source be sure to set ACLOCAL_PATH to
+point to the pkg-config location (e.g., /usr/share/aclocal).
+
+If you want to build from Git with a non-GCC compiler, add "MAKE_CFLAGS=" to
+your make command line (or at least remove any flags your compiler does not
+support).
+
+When building from Git you must build in the source directory: "VPATH
+builds" from remote directories are not supported.  Once you've created
+a distribution, of course, you can unpack it and do a VPATH build from
+there.
+
+After checking out the code, you will need to run the bootstrap script:
+
+ $ ./bootstrap
+
+Alternatively you can just pull content from remote locations with:
+
+ $ ./bootstrap --pull
+
+And/or just re-generate auto-generatable files with:
+
+ $ ./bootstrap --gen
+
+(Running ./bootstrap does both in one step.)
+
+At this point you have successfully brought your Git copy of the GNU
+make source directory up to the point where it can be treated
+more-or-less like the official package you would get from ftp.gnu.org.
+That is, you can just run:
+
+  $ ./configure
+  $ make check
+
+to build and test GNU Make.
+
+NOTE! This method builds GNU Make in "maintainer mode".  Make programs built
+      in this mode will be slower, possibly MUCH slower: there are various
+      sanity checks enabled.  Further this mode assumes a modern GCC, GNU
+      libc, and well-formed system headers and enables a high level of
+      warnings AND enables -Werror to turn warnings into failures.
+
+      If you want to build from Git with "maintainer mode" disabled, add
+      "MAKE_MAINTAINER_MODE=" to the make command line.  If you want to turn
+      off the extra warning flags, add "MAKE_CFLAGS=" to the make command
+      line.  If you want to keep the warnings but not fail, add
+      "EXTRA_CFLAGS=-Wno-error" to the make command line.
+
+      For example:
+        $ ./configure
+        $ make check MAKE_MAINTAINER_MODE= MAKE_CFLAGS=
+        $ make install
+
+
+Building From Git for Windows
+-----------------------------
+
+If you have a UNIX emulation like CYGWIN you can opt to run the general build
+procedure above; it will work.  Consult README.W32 for information on options
+you might want to use when running ./configure.
+
+If you can't or don't want to do that, then first run the .\bootstrap.bat
+script to "prime" your Git workspace:
+
+  > .\bootstrap.bat
+
+Next, follow the instructions in the README.W32 file.
+
+Note, neither of these methods are tested regularly by the GNU Make
+maintainers.  Building for Windows from a distribution tarball IS tested
+regularly.
+
+NOTE! "Maintainer mode" (see above) IS ENABLED when building from Git using
+      the build_w32.bat file.
+
+
+Debugging and Testing
+---------------------
+
+These instructions have been tested on GNU systems.  I have no idea if they
+work on non-GNU systems (Windows, MacOS, etc.)
+
+* Alternate Configurations:
+  The maintMakefile has a rule for running configure with various different
+  options, with and without packages.  Run:
+
+    make check-alt-config
+
+* Valgrind:
+  You can run all tests under valgrind by passing the -memcheck option:
+
+    (cd tests && ./run_make_tests -make ../make -memcheck)
+
+  Note, this is slow!  Also some tests will fail because of invoking valgrind.
+
+* ASAN:
+  You can build with ASAN and run tests, like this:
+
+    make clean
+    make -j8 CFLAGS='-ggdb3 -fsanitize=address' LDFLAGS='-ggdb3 -fsanitize=address'
+
+  Then to check for corruption only but not memory leaks run:
+
+    ASAN_OPTIONS='detect_stack_after_use_return=true:detect_leaks=false' make check
+
+  To check for leaks too run:
+
+    make check
+
+  Note that ASAN is reporting many more errors than valgrind.  I don't know
+  which one is wrong: I haven't looked at them closely.
+
+
+Creating a Package
+------------------
+
+Once you have performed the above steps (including the configuration and
+build) you can create a GNU Make package.  This is very simple, just
+run:
+
+  $ make dist-gzip
+
+and, if you like:
+
+  $ make dist-lzip
+
+Even better, you should run this:
+
+  $ make distcheck
+
+Which will build both .gz and .lz package files, then unpack one into a
+temporary location, try to build it and repack it, then verifying that
+everything works, you get the same results, _and_ no extraneous files are
+left over after the "distclean" rule.
+
+This package can be unpacked and built to give a "normal" (non-maintainer
+mode) result.
+
+
+Steps to Release
+----------------
+
+Here are the things that need to be done (in more or less this order)
+before making an official release.  If something breaks such that you need to
+change code, be sure to start over again sufficiently that everything is
+consistent (that's why we don't finalize the Git tag, etc. until the end).
+
+  * Update the configure.ac file with the new release number.
+  * Update the EDITION value in the doc/make.texi file.
+  * Update the doc/make.1 file with the release date.
+  * Update the NEWS file with the release number and date.
+  * Ensure the Savannah bug list URL in the NEWS file uses the correct
+    "Fixed Release" ID number.
+  * Run "make distcheck" to be sure it all works.
+  * Run "make check-alt-config" to be sure alternative configurations work
+  * run "make tag-release" to create a Git tag for the release
+  * Push everything:
+    git push --tags origin master
+
+The safest thing is to create an entirely new repository and build the final
+package from there:
+
+  git clone git://git.savannah.gnu.org/make.git make-release
+  cd make-release
+
+If you don't want to create a new repository then run "git clean -fdx".
+Then:
+
+  ./bootstrap
+  ./configure
+  make distcheck
+
+Perform test builds on whichever systems you have access to.
+
+Use a previous announcement as a template to create an announcement in a text
+file then sign it with GPG:
+
+  gpg --clearsign <announcement.txt>
+
+Or, use your mail client's PGP/GPG signing capabilities.
+
+NOTE! In order to publish a package on the FSF FTP site you need to have my
+      GPG private key, and my passphrase to unlock it.
+
+      Depending on your distribution (whether GnuPG is integrated with your
+      keyring etc.) the upload operation will either pop up a window asking
+      for the GPG key passphrase one time, or else it will use the CLI to ask
+      for the GPG passphrase _THREE_ times.  Sigh.
+
+
+Publishing a Release Candidate
+------------------------------
+
+Usually I publish one or two release candidates for people to test before
+making an official release.  Release candidates use a GNU numbering scheme,
+which add a ".9x" release number to the PREVIOUS major release.  So the first
+release candidate for GNU Make 4.4 would be GNU Make 4.3.90, the second
+release candidate would be 4.3.91, etc.
+
+Upload a release candidate using:
+
+  make upload-alpha
+
+Announce a release candidate to these mailing lists:
+
+    To:  bug-make@gnu.org
+    BCC: help-make@gnu.org, make-w32@gnu.org, make-alpha@gnu.org
+
+You will have to approve the BCC's on the mailing list admin sites.  Send
+separate copies to (don't use CC as replies will go to these lists):
+
+  * coordinator@translationproject.org
+  * platform-testers@gnu.org
+
+
+Publishing a Release
+--------------------
+
+When publishing a final release there are extra steps that need to be taken:
+
+  * Run "make update-makeweb" to get a copy of the GNU Make web pages
+  * Run "make update-gnuweb" to get a copy of the GNU website boilerplate pages
+  * Update the web page boilerplate if necessary:
+      ( cd ~/src/make/make-web \
+         && ~/src/gnu-www/www/server/standards/patch-from-parent \
+                make.html \
+                ~/src/gnu-www/www/server/standards/boilerplate.html )
+  * Run "make gendocs" (requires gnulib) to generate the manual files for
+    the GNU Make web pages.
+  * Follow the directions from gendocs for the web page repository
+
+Manage the Savannah project for GNU Make:
+
+  * In Savannah edit the "Component Version" field and choose the "SCM" entry.
+    Modify the "Value", "Rank", and "Description" values for the to refer to
+    the new release.  The "Rank" field should be 10 less than the previous
+    release so it orders properly.
+
+  * In Savannah edit the "Fixed Release" field and choose the "SCM" entry.
+    Modify the "Value", "Rank", and "Description" values for the to refer to
+    the new release.  The "Rank" field should be 10 less than the previous
+    release so it orders properly.
+
+  * In Savannah create a new entry for the "Component Version" field:
+      - Value: SCM
+      - Rank:  20
+      - Descr: Issues found in code retrieved from Source Code Management (Git), rather than a distributed version. Please include the SHA you are working with.
+
+  * In Savannah create a new entry for the "Fix Release" field:
+      - Value: SCM
+      - Rank:  20
+      - Descr: Fixed in Source Code Management (Git). The fix will be included in the next release of GNU Make.
+
+Upload a release using:
+
+  make upload-ftp
+
+Announce a release to these mailing lists:
+
+    To:  info-gnu@gnu.org, bug-make@gnu.org
+    BCC: help-make@gnu.org, make-w32@gnu.org, make-alpha@gnu.org
+
+You will have to approve the BCC's on the mailing list admin sites.  Send
+separate copies to (don't use CC as replies will go to these lists):
+
+  * coordinator@translationproject.org
+  * platform-testers@gnu.org
+
+Announce on Savannah:
+
+  * Add a news item to the Savannah project site.
+
+Start the next release:
+
+  * Update configure.ac and add a ".90" to the release number.
+  * Update the NEWS file with a new section for the release / date.
+  * Update the Savannah URL for the bugs fixed in the NEWS section.
+
+
+Appendix A - For The Brave
+--------------------------
+
+For those of you who trust me implicitly, or are just brave (or
+foolhardy), here is a canned sequence of commands to build a GNU Make
+distribution package from a virgin Git source checkout (assuming all the
+prerequisites are available of course).
+
+This list is eminently suitable for a quick swipe o' the mouse and a
+swift click o' mouse-2 into an xterm.  Go for it!
+
+For a debugging version:
+
+./bootstrap && ./configure CFLAGS=-g && make check
+
+For an optimized version
+
+./bootstrap && ./configure && make check

README.in

@@ -0,0 +1,216 @@
+This directory contains the @PACKAGE_VERSION@ release of @PACKAGE_NAME@.
+
+See the file NEWS for the user-visible changes from previous releases.
+In addition, there have been bugs fixed.
+
+>> If you are trying to build GNU Make from a Git clone rather than a
+>> downloaded source distribution, see the README.git file for instructions.
+
+Please check the system-specific notes below for any caveats related to your
+operating system.
+
+This README assumes you are building on a POSIX-based operating system.
+For ports to other operating systems please see the system-specific README
+files, as described in the "Ports" section below.
+
+For source distribution building and installation instructions, see the file
+INSTALL.
+
+If you need to build GNU Make and have no other 'make' program to use, you can
+use the shell script 'build.sh' instead.  To do this, first run 'configure' as
+described in INSTALL.  Then, instead of typing 'make' to build the program,
+type 'sh build.sh'.  This will compile the program in the current directory.
+Then you will have a 'make' program that you can use for './make install', or
+whatever else.
+
+Some systems' 'make' programs cannot process the Makefile for GNU Make.
+If you get errors from your system's 'make' when building GNU Make, try using
+'build.sh' instead.
+
+
+GNU Make is free software.  See the file COPYING for copying conditions.
+GNU Make is copyright by the Free Software Foundation.  Copyright notices
+condense sequential years into a range; e.g. "1987-1994" means all years
+from 1987 to 1994 inclusive.
+
+
+Downloading
+-----------
+
+GNU Make can be obtained in many different ways.  See a description here:
+
+  https://www.gnu.org/software/software.html
+
+
+Documentation
+-------------
+
+GNU Make is fully documented in the GNU Make manual, which is contained in
+this distribution as the file make.texi.  You can also find on-line and
+preformatted (PostScript and DVI) versions at the FSF's web site.  There is
+information there about ordering hardcopy documentation.
+
+  https://www.gnu.org/
+  https://www.gnu.org/doc/doc.html
+  https://www.gnu.org/manual/manual.html
+
+
+Development
+-----------
+
+GNU Make development is hosted by Savannah, the FSF's online development
+management tool.  Savannah is here:
+
+  https://savannah.gnu.org
+
+And the GNU Make development page is here:
+
+  https://savannah.gnu.org/projects/make/
+
+You can find most information concerning the development of GNU Make at
+this site.
+
+
+Regression Tests
+----------------
+
+GNU Make contains a suite of regression tests.  To run them use "make check"
+after building GNU Make.  If they fail a tar package will be created
+containing useful information, which can be emailed (as an attachment) to
+the <bug-make@gnu.org> mailing list.
+
+Please note that since these tests rely on known-good-output comparisons,
+they can show spurious failures on some systems (particularly non-POSIX systems
+such as Windows).
+
+
+Bug Reporting
+-------------
+
+If you need help using GNU Make, try asking on <help-make@gnu.org>.
+
+If you found a bug, you can send a bug reports to <bug-make@gnu.org>.
+Please see the section of the GNU Make manual entitled 'Problems and Bugs'
+for information on submitting useful and complete bug reports.
+
+You do not need to subscribe to these lists first.
+
+You can also use the online bug tracking system in the Savannah GNU Make
+project to submit new problem reports or search for existing ones:
+
+  https://savannah.gnu.org/bugs/?group=make
+
+We prefer to use the bug tracking system ONLY for bugs or enhancements,
+not for help requests: please use the mailing lists to get help.
+
+
+Submitting Patches
+------------------
+
+If you'd like to propose a change to GNU Make, you can provide a patch with
+your changes.  If you are making your changes in a Git workspace you can run
+"git format-patch" to create a patch file.  If not, you can use the diff(1)
+utility to create a patch file; please use "diff -u".
+
+Once you have a patch you can submit it in any of these ways:
+
+  * Create a bug on Savannah and add the patch as an attachment:
+      https://savannah.gnu.org/bugs/?group=make&func=additem
+
+  * Send the patch via email to <bug-make@gnu.org>: be sure to add it as an
+    attachment to avoid interference by email processors.
+
+All non-trivial changes require FSF copyright paperwork to be completed
+before they can be accepted.  Contact <bug-make@gnu.org> for help.
+
+
+Git Access
+----------
+
+The GNU Make source repository is available via Git from the GNU Savannah Git
+server; look here for details:
+
+  https://savannah.gnu.org/git/?group=make
+
+Please note: you won't be able to build GNU Make from Git without installing
+appropriate maintainer's tools, such as GNU m4, automake, autoconf, Perl, GNU
+make, and GCC.
+
+See the README.git file for instructions on how to build GNU Make once these
+tools are available.  We make no guarantees about the contents or quality of
+the latest code in the Git repository: it is not unheard of for code that is
+known to be broken to be checked in.  Use at your own risk.
+
+
+System-specific Notes
+---------------------
+
+One area that is often a problem in configuration and porting is the code
+to check the system's current load average.  To make it easier to test and
+debug this code, you can do 'make check-loadavg' to see if it works
+properly on your system.  (You must run 'configure' beforehand, but you
+need not build 'make' itself to run this test.)
+
+Another potential source of porting problems is the support for large
+files (LFS) in configure for those operating systems that provide it.
+Please report any bugs that you find in this area.  If you run into
+difficulties, then as a workaround you should be able to disable LFS by
+adding the '--disable-largefile' option to the 'configure' script.
+
+On systems that support micro- and nano-second timestamp values and
+where stat(2) provides this information, GNU Make will use it when
+comparing timestamps to get the most accurate possible result.  However,
+note that many current implementations of tools that *set* timestamps do
+not preserve micro- or nano-second granularity.  This means that "cp -p"
+and other similar tools (tar, etc.) may not exactly duplicate timestamps
+with micro- and nano-second granularity on some systems.  If your build
+system contains rules that depend on proper behavior of tools like "cp
+-p", you should consider using the .LOW_RESOLUTION_TIME pseudo-target to
+force make to treat them properly.  See the manual for details.
+
+
+Ports
+-----
+
+  - See README.customs for details on integrating GNU Make with the
+    Customs distributed build environment from the Pmake distribution.
+
+  - See README.VMS for details about GNU Make on OpenVMS.
+
+  - See README.zOS for details about GNU Make on z/OS.
+
+  - See README.W32 for details about GNU Make on Windows NT, 95, or 98.
+
+  - See README.DOS for compilation instructions on MS-DOS and MS-Windows
+    using DJGPP tools.
+
+    A precompiled binary of the MSDOS port of GNU Make is available as part
+    of DJGPP; see the WWW page https://www.delorie.com/djgpp/ for more
+    information.
+
+    The Cygwin project maintains its own port of GNU Make.  That port may have
+    patches which are not present in this version.  If you are using Cygwin
+    you should use their version of GNU Make, and if you have questions about
+    it you should start by asking on those mailing lists and forums.
+
+Please note there are two _separate_ ports of GNU Make for Microsoft
+systems: a native Windows port built with (for example) MSVC or MinGW,
+and a DOS-based port built with DJGPP.  Please be sure you are looking
+at the right README!
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.

README.zOS

@@ -0,0 +1,83 @@
+                                                                     -*-text-*-
+GNU Make has been ported to z/OS, tested on z/OS V2R4.
+
+
+PREREQUISITES
+-------------
+Building GNU Make requires certain tools be installed on your z/OS system.
+These tools can be downloaded from: https://github.com/ZOSOpenTools
+For detailed instructions on how to set up these tools, visit
+https://zosopentools.github.io/meta/#/Guides/Pre-req
+
+You will need curl, tar, and gzip to download and unpack the GNU Make release
+package, but presumably you've already worked this out if you're reading this
+document!
+
+You will need the IBM C/C++ compiler.  You can download a web deliverable
+add-on feature to your XL C/C++ compiler here:
+https://www-40.ibm.com/servers/resourcelink/svc00100.nsf/pages/xlCC++V241ForZOsV24
+
+Alternatively, you can install and manage C/C++ for Open Enterprise Languages
+on z/OS using RedHat OpenShift Container Platform and IBM Z and Cloud
+Modernization Stack.
+
+GNU Make has a dependency on the ZOSLIB library, which is documented here:
+https://zosopentools.github.io/meta/#/Guides/Zoslib.
+
+To obtain the latest release of zoslib, you can download it from here:
+https://github.com/ZOSOpenTools/zoslibport/releases.
+
+
+BUILDING
+--------
+If you are trying to build from a checked-out Git workspace, see README.git.
+
+Before building GNU Make, you will need to ensure that the following
+environment variables are set, to turn on z/OS enhanced ASCII support:
+
+  export _BPXK_AUTOCVT=ON
+  export _CEE_RUNOPTS="$_CEE_RUNOPTS FILETAG(AUTOCVT,AUTOTAG) POSIX(ON)"
+  export _TAG_REDIR_ERR=txt
+  export _TAG_REDIR_IN=txt
+  export _TAG_REDIR_OUT=txt
+
+To ensure proper functioning of xlclang, set the following environment
+variables before building:
+
+  export _CC_CCMODE=1
+  export _C89_CCMODE=1
+  export _CXX_CCMODE=1
+
+Set PATH_TO_ZOSLIB to the location of your zoslib installation; e.g.:
+
+  PATH_TO_ZOSLIB=$HOME/zopen/prod/zoslib
+
+Invoke ./configure as follows:
+
+  ./configure \
+      CC=xlclang \
+      CPPFLAGS="-DNSIG=42 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE -D_OPEN_SYS_FILE_EXT=1 -D_AE_BIMODAL=1 -D_ENHANCED_ASCII_EXT=0xFFFFFFF -DZOSLIB_OVERRIDE_CLIB=1" \
+      CFLAGS="-qascii -std=gnu11 -qnocsect -qenum=int -I$PATH_TO_ZOSLIB/include" \
+      LDFLAGS="-L$PATH_TO_ZOSLIB/lib" \
+      LIBS="-lzoslib $PATH_TO_ZOSLIB/lib/CXXRT64.x"
+
+If you have an instance of make already available you can build with:
+
+  make
+
+If not, you can build with:
+
+  ./build.sh
+
+
+TESTING
+-------
+To run the regression tests you'll need to install Perl and enable it.
+Then you can run:
+
+  ./make check
+
+
+INSTALLING
+----------
+Copy the "make" program to wherever you want it to be installed, on your PATH.

TODO.private

@@ -0,0 +1,117 @@
+                                                            -*-Indented-Text-*-
+GNU Make TODO List
+------------------
+
+This list comes both from the authors and from users of GNU make.
+
+They are listed in no particular order!
+
+Also, I don't guarantee that all of them will be ultimately deemed "good
+ideas" and implemented.  These are just the ones that, at first blush,
+seem to have some merit (and that I can remember).
+
+However, if you see something here you really, really want, speak up.
+All other things being equal, I will tend to implement things that seem
+to maximize user satisfaction.
+
+If you want to implement some of them yourself, barring the ones I've
+marked below, have at it!  Please contact me first to let me know you're
+working on it, and give me some info about the design--and, critically,
+information about any user-visible syntax change, etc.
+
+
+The Top Item
+------------
+
+If you know perl (or want to learn DejaGNU or similar), the number one
+priority on my list of things I don't have time to do right now is
+fixing up the GNU make test suite.  Most importantly it needs to be made
+"parallelizable", so more than one regression can run at the same time
+(essentially, make the "work" directory local).  Also, the CWD during
+the test should be in the work directory or, better, a test-specific
+temporary directory so each test gets a new directory; right now
+sometimes tests leak files into the main directory which causes
+subsequent tests to fail (some tests may need to be tweaked).  Beyond
+that, any cleanup done to make writing, reading, or handling tests
+simpler would be great!  Please feel free to make whatever changes you
+like to the current tests, given some high-level goals, and that you'll
+port the current tests to whatever you do :).
+
+
+The Rest of the List
+--------------------
+
+ 1) Option to check more than timestamps to determine if targets have
+    changed.  This is also a very big one.  It's _close_ to my plate :),
+    and I have very definite ideas about how I would like it done.
+    Please pick something else unless you must have this feature.  If
+    you try it, please work _extremely_ closely with me on it.
+
+ 1a) Possibly a special case of this is the .KEEP_STATE feature of Sun's
+     make.  Some great folks at W U. in Canada did an implementation of
+     this for a class project.  Their approach is reasonable and
+     workable, but doesn't really fit into my ideas for #2.  Maybe
+     that's OK.  I have paperwork for their work so if you want to do
+     this one talk to me to get what they've already done.
+
+     [K R Praveen <praveen@cair.res.in>]
+
+ 2) Currently you can use "%.foo %.bar : %.baz" to mean that one
+    invocation of the rule builds both targets.  GNU make needs a way to
+    do that for explicit rules, too.  I heard a rumor that some versions
+    of make all you to say "a.foo + a.bar : a.baz" to do this (i.e., a
+    "+" means one invocation builds both).  Don't know if this is the
+    best syntax or not... what if you say "a.foo + a.bar a.bam : a.baz";
+    what does that mean?
+
+ 3) Multi-token pattern rule matching (allow %1/%2.c : %1/obj/%2.o,
+    etc., or something like that).  Maybe using regex?
+
+ 4) Provide a .TARGETS variable, containing the names of the targets
+    defined in the makefile.
+
+    Actually, I now think a $(targets ...) function, at least, might be
+    better than a MAKETARGETS variable.  The argument would be types of
+    targets to list: "phony" is the most useful one.  I suppose
+    "default" might also be useful.  Maybe some others; check the
+    bitfields to see what might be handy.
+
+ 5) Some sort of operating-system independent way of handling paths
+    would be outstanding, so makefiles can be written for UNIX, VMS,
+    DOS, MS-Windows, Amiga, etc. with a minimum of specialization.
+
+    Or, perhaps related/instead of, some sort of meta-quoting syntax so
+    make can deal with filenames containing spaces, colons, etc.  I
+    dunno, maybe something like $[...]?  This may well not be worth
+    doing until #1 is done.
+
+ 6) Right now the .PRECIOUS, .INTERMEDIATE, and .SECONDARY
+    pseudo-targets have different capabilities.  For example, .PRECIOUS
+    can take a "%", the others can't.  Etc.  These should all work the
+    same, insofar as that makes sense.
+
+ 7) Improved debugging/logging/etc. capabilities.  Part of this is done:
+    I introduced a number of debugging enhancements.  Tim Magill is (I
+    think) looking into options to control output more selectively.
+    One thing I want to do in debugging is add a flag to allow debugging
+    of variables as they're expanded (!).  This would be incredibly
+    verbose, but could be invaluable when nothing else seems to work and
+    you just can't figure it out.  The way variables are expanded now
+    means this isn't 100% trivial, but it probably won't be hard.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1997-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.

autogen.sh

@@ -0,0 +1,39 @@
+#!/bin/sh
+# Convenience script for regenerating all autogeneratable files that are
+# omitted from the version control repository. In particular, this script
+# also regenerates all aclocal.m4, config.h.in, Makefile.in, configure files
+# with new versions of autoconf or automake.
+
+# Copyright (C) 2003-2024 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Originally written by Paul Eggert.  The canonical version of this
+# script is maintained as top/autogen.sh in gnulib.  However, to be
+# useful to your package, you should place a copy of it under version
+# control in the top-level directory of your package.  The intent is
+# that all customization can be done with a bootstrap.conf file also
+# maintained in your version control; gnulib comes with a template
+# build-aux/bootstrap.conf to get you started.
+#
+# Alternatively, you can use an autogen.sh script that is specific
+# to your package.
+
+me="$0"
+medir=`dirname "$me"`
+
+# Read the function library and the configuration.
+. "$medir"/bootstrap-funclib.sh
+
+autogen "$@"

autopull.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+# Convenience script for fetching auxiliary files that are omitted from
+# the version control repository of this package.
+
+# Copyright (C) 2003-2024 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Originally written by Paul Eggert.  The canonical version of this
+# script is maintained as top/autopull.sh in gnulib.  However, to be
+# useful to your package, you should place a copy of it under version
+# control in the top-level directory of your package.  The intent is
+# that all customization can be done with a bootstrap.conf file also
+# maintained in your version control; gnulib comes with a template
+# build-aux/bootstrap.conf to get you started.
+#
+# Alternatively, you can use an autopull.sh script that is specific
+# to your package.
+
+me="$0"
+medir=`dirname "$me"`
+
+# Read the function library and the configuration.
+. "$medir"/bootstrap-funclib.sh
+
+autopull "$@"

bootstrap

@@ -0,0 +1,226 @@
+#! /bin/sh
+# Bootstrap this package from checked-out sources.
+
+scriptversion=2022-12-27.07; # UTC
+
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Originally written by Paul Eggert.  The canonical version of this
+# script is maintained as top/bootstrap in gnulib. However, to be
+# useful to your package, you should place a copy of it under version
+# control in the top-level directory of your package.  The intent is
+# that all customization can be done with a bootstrap.conf file also
+# maintained in your version control; gnulib comes with a template
+# build-aux/bootstrap.conf to get you started.
+
+# Please report bugs or propose patches to bug-gnulib@gnu.org.
+
+me="$0"
+medir=`dirname "$me"`
+
+# Read the function library and the configuration.
+. "$medir"/bootstrap-funclib.sh
+
+usage() {
+  cat <<EOF
+Usage: $me [OPTION]...
+Bootstrap this package from the checked-out sources.
+
+Optional environment variables:
+  GNULIB_SRCDIR            Specifies the local directory where gnulib
+                           sources reside.  Use this if you already
+                           have gnulib sources on your machine, and
+                           do not want to waste your bandwidth downloading
+                           them again.
+  GNULIB_URL               Cloneable URL of the gnulib repository.
+
+Options:
+
+  --pull                   Do phase 1: pull files from network
+  --gen                    Do phase 2: generate from local files.
+                           (The default is to do both phases.)
+
+  --gnulib-srcdir=DIRNAME  specify the local directory where gnulib
+                           sources reside.  Use this if you already
+                           have gnulib sources on your machine, and
+                           you want to use these sources.  Defaults
+                           to \$GNULIB_SRCDIR
+  --gnulib-refdir=DIRNAME  specify the local directory where a gnulib
+                           repository (with a .git subdirectory) resides.
+                           Use this if you already have gnulib sources
+                           and history on your machine, and do not want
+                           to waste your bandwidth downloading them again.
+                           Defaults to \$GNULIB_REFDIR
+
+  --bootstrap-sync         if this bootstrap script is not identical to
+                           the version in the local gnulib sources,
+                           update this script, and then restart it with
+                           /bin/sh or the shell \$CONFIG_SHELL
+  --no-bootstrap-sync      do not check whether bootstrap is out of sync
+
+  --copy                   copy files instead of creating symbolic links
+  --force                  attempt to bootstrap even if the sources seem
+                           not to have been checked out
+  --no-git                 do not use git to update gnulib.  Requires that
+                           \$GNULIB_SRCDIR or the --gnulib-srcdir option
+                           points to a gnulib repository with the correct
+                           revision
+  --skip-po                do not download po files
+EOF
+  bootstrap_print_option_usage_hook
+  cat <<EOF
+If the file bootstrap.conf exists in the same directory as this script, its
+contents are read as shell variables to configure the bootstrap.
+
+For build prerequisites, environment variables like \$AUTOCONF and \$AMTAR
+are honored.
+
+Gnulib sources can be fetched in various ways:
+
+ * If the environment variable GNULIB_SRCDIR is set (either as an
+   environment variable or via the --gnulib-srcdir option), then sources
+   are fetched from that local directory.  If it is a git repository and
+   the configuration variable GNULIB_REVISION is set in bootstrap.conf,
+   then that revision is checked out.
+
+ * Otherwise, if this package is in a git repository with a 'gnulib'
+   submodule configured, then that submodule is initialized and updated
+   and sources are fetched from there.  If GNULIB_REFDIR is set (either
+   as an environment variable or via the --gnulib-refdir option) and is
+   a git repository, then it is used as a reference.
+
+ * Otherwise, if the 'gnulib' directory does not exist, Gnulib sources
+   are cloned into that directory using git from \$GNULIB_URL, defaulting
+   to $default_gnulib_url.
+   If the configuration variable GNULIB_REVISION is set in bootstrap.conf,
+   then that revision is checked out.
+
+ * Otherwise, the existing Gnulib sources in the 'gnulib' directory are
+   used.  If it is a git repository and the configuration variable
+   GNULIB_REVISION is set in bootstrap.conf, then that revision is
+   checked out.
+
+If you maintain a package and want to pin a particular revision of the
+Gnulib sources that has been tested with your package, then there are
+two possible approaches: either configure a 'gnulib' submodule with the
+appropriate revision, or set GNULIB_REVISION (and if necessary
+GNULIB_URL) in bootstrap.conf.
+
+Running without arguments will suffice in most cases.
+EOF
+}
+
+# Parse options.
+
+# Whether to pull and generate.
+pull=false
+gen=false
+
+# Whether to use copies instead of symlinks.
+copy=false
+
+# Use git to update gnulib sources
+use_git=true
+
+for option
+do
+  case $option in
+  --help)
+    usage
+    exit;;
+  --version)
+    set -e
+    echo "bootstrap $scriptversion lib $scriptlibversion"
+    echo "$copyright"
+    exit 0
+    ;;
+  --pull)
+    pull=true;;
+  --gen)
+    gen=true;;
+  --gnulib-srcdir=*)
+    GNULIB_SRCDIR=${option#--gnulib-srcdir=};;
+  --gnulib-refdir=*)
+    GNULIB_REFDIR=${option#--gnulib-refdir=};;
+  --skip-po)
+    SKIP_PO=t;;
+  --force)
+    checkout_only_file=;;
+  --copy)
+    copy=true;;
+  --bootstrap-sync)
+    bootstrap_sync=true;;
+  --no-bootstrap-sync)
+    bootstrap_sync=false;;
+  --no-git)
+    use_git=false;;
+  *)
+    bootstrap_option_hook $option || die "$option: unknown option";;
+  esac
+done
+
+# Default is to do both.
+$pull || $gen || pull=true gen=true
+
+$use_git || test -n "$GNULIB_SRCDIR" \
+  || die "Error: --no-git requires \$GNULIB_SRCDIR environment variable or --gnulib-srcdir option"
+test -z "$GNULIB_SRCDIR" || test -d "$GNULIB_SRCDIR" \
+  || die "Error: \$GNULIB_SRCDIR environment variable or --gnulib-srcdir option is specified, but does not denote a directory"
+
+if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
+  die "Bootstrapping from a non-checked-out distribution is risky."
+fi
+
+check_build_prerequisites $use_git
+
+if $bootstrap_sync; then
+  prepare_GNULIB_SRCDIR
+  upgrade_bootstrap
+  # Since we have now upgraded if needed, no need to try it a second time below.
+  bootstrap_sync=false
+fi
+
+echo "$0: Bootstrapping from checked-out $package sources..."
+
+# Pass GNULIB_SRCDIR and GNULIB_REFDIR to any subsidiary commands that care.
+export GNULIB_SRCDIR
+export GNULIB_REFDIR
+
+if $pull && { $use_git || test -z "$SKIP_PO"; }; then
+  autopull \
+      `if $bootstrap_sync; then echo ' --bootstrap-sync'; else echo ' --no-bootstrap-sync'; fi` \
+      `if test -z "$checkout_only_file"; then echo ' --force'; fi` \
+      `if ! $use_git; then echo ' --no-git'; fi` \
+      `if test -n "$SKIP_PO"; then echo ' --skip-po'; fi` \
+    || die "could not fetch auxiliary files"
+fi
+
+if $gen; then
+ autogen \
+    `if $copy; then echo ' --copy'; fi` \
+    `if test -z "$checkout_only_file"; then echo ' --force'; fi` \
+  || die "could not generate auxiliary files"
+fi
+
+# ----------------------------------------------------------------------------
+
+# Local Variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

bootstrap.bat

@@ -0,0 +1,116 @@
+@echo off
+:: Copyright (C) 2018-2024 Free Software Foundation, Inc.
+:: This file is part of GNU Make.
+::
+:: GNU Make is free software; you can redistribute it and/or modify it under
+:: the terms of the GNU General Public License as published by the Free
+:: Software Foundation; either version 3 of the License, or (at your option)
+:: any later version.
+::
+:: GNU Make is distributed in the hope that it will be useful, but WITHOUT
+:: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+:: FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+:: more details.
+::
+:: You should have received a copy of the GNU General Public License along
+:: with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+setlocal
+set "svurl=https://git.savannah.gnu.org/cgit"
+set "gnuliburl=%svurl%/gnulib.git/plain"
+
+where curl >nul 2>&1
+if ERRORLEVEL 1 (
+    echo Cannot find curl: it must be installed for bootstrap
+    exit /b 1
+)
+
+where sed >nul 2>&1
+if ERRORLEVEL 1 (
+    echo Cannot find sed: it must be installed for bootstrap
+    echo Hint: you can use the sed provided in the Git for Windows install
+    exit /b 1
+)
+
+if exist lib goto Downloads
+mkdir lib
+if ERRORLEVEL 1 exit /b 1
+
+:Downloads
+echo -- Downloading Gnulib modules
+call :Download lib getloadavg.c
+call :Download lib intprops.h
+call :Download lib intprops-internal.h
+
+echo -- Configuring the workspace
+copy /Y gl\lib\*.* lib > nul
+
+:: In general it's tricky to use special characters as arguments to a program
+:: in Windows batch files; the quoting rules are obscure and have changed over
+:: time which means older systems may behave differently.  However, Windows
+:: echo is a dumb program that just writes out its command line without much
+:: interpreting: all we have to be careful of is ^ quoting.  So, use echo
+:: to create script files to use with sed -f rather than using sed -e.
+
+:: Create a sed script to convert templates
+if exist convert.sed del /Q convert.sed
+echo s,@PACKAGE@,make,g > convert.sed
+if ERRORLEVEL 1 goto Failed
+echo s,@PACKAGE_BUGREPORT@,bug-make@gnu.org,g >> convert.sed
+if ERRORLEVEL 1 goto Failed
+echo s,@PACKAGE_NAME@,GNU Make,g >> convert.sed
+if ERRORLEVEL 1 goto Failed
+echo s,@PACKAGE_TARNAME@,make,g >> convert.sed
+if ERRORLEVEL 1 goto Failed
+echo s,@PACKAGE_URL@,https://www.gnu.org/software/make/,g >> convert.sed
+echo s/^^AC_INIT^(\[GNU.Make\],\[\^([0-9.]*\^)\].*/s,@PACKAGE_VERSION@,\1,g/p > cac.sed
+sed -n -f cac.sed configure.ac >> convert.sed
+if ERRORLEVEL 1 goto Failed
+:: Get the list of sources from Makefile.am
+echo s,\\\n,,g > mam.sed
+echo s,[ \t][ \t]*, ,g >> mam.sed
+echo s, [^^ ]*\.h,,g >> mam.sed
+echo s,src/,$^(src^),g >> mam.sed
+echo s,lib/,$^(lib^),g >> mam.sed
+echo s/^^\^([A-Za-z0-9]*\^)_SRCS *= *\^(.*\^)/s,%%\1_SOURCES%%,\2,/p > mam2.sed
+sed -z -f mam.sed Makefile.am | sed -n -f mam2.sed >> convert.sed
+if ERRORLEVEL 1 goto Failed
+
+echo - Creating Basic.mk
+sed -f convert.sed Basic.mk.template > Basic.mk
+if ERRORLEVEL 1 goto Failed
+echo - Creating src\mkconfig.h
+sed -f convert.sed src\mkconfig.h.in > src\mkconfig.h
+if ERRORLEVEL 1 goto Failed
+
+echo - Creating src\gmk-default.h
+echo static const char *const GUILE_module_defn = ^" \ > src\gmk-default.h
+echo s/;.*// > gmk.sed
+echo /^^[ \t]*$/d >> gmk.sed
+echo s/"/\\"/g >> gmk.sed
+echo s/$/ \\/ >> gmk.sed
+sed -f gmk.sed src\gmk-default.scm >> src\gmk-default.h
+if ERRORLEVEL 1 goto Failed
+echo ^";>> src\gmk-default.h
+
+:: These files would be created by bootstrap; they are not needed on Windows
+:: but our makefile depends on them
+echo >> lib\alloca.in.h
+
+del /Q convert.sed cac.sed mam.sed mam2.sed gmk.sed
+
+echo.
+echo Done.  Run build_w32.bat to build GNU Make.
+goto :EOF
+
+:Download
+if exist "%1\%2" goto :EOF
+echo - Downloading %1\%2
+curl -sS -o "%1\%2" "%gnuliburl%/%1/%2"
+if ERRORLEVEL 1 exit /b 1
+goto :EOF
+
+:Failed
+echo *** Bootstrap failed.
+echo Resolve the issue, or use the configured source in the release tarball
+exit /b 1

bootstrap.conf

@@ -0,0 +1,65 @@
+# Bootstrap configuration.                                   -*-shell-script-*-
+
+# Copyright (C) 2018-2024 Free Software Foundation, Inc.
+
+# GNU Make is free software: you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 3 of the License, or (at your option)
+# any later version.
+
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Allow bootstrap to know that this is not a package
+checkout_only_file=README.git
+
+# Choose a specific version of gnulib, when checking out
+GNULIB_REVISION=stable-202407
+
+# Always copy files rather than symlink
+copy=true
+
+# Additional xgettext options to use.  Use "\\\newline" to break lines.
+# Ensure that all our magical output macros are correctly marked as
+# C (printf) format strings.
+XGETTEXT_OPTIONS='\\\
+ --from-code=UTF-8\\\
+ --flag=_:1:pass-c-format\\\
+ --flag=N_:1:pass-c-format\\\
+ --flag=DB:2:c-format --flag=DBF:2:c-format --flag=DBS:2:c-format\\\
+ --flag=O:3:c-format  --flag=OSN:3:c-format --flag=ONS:3:c-format\\\
+ --flag=OS:3:c-format --flag=OSS:3:c-format --flag=OSSS:3:c-format\\\
+ --flag=ON:3:c-format --flag=ONN:3:c-format\\\
+'
+
+# We manage our own .gitignore files
+vc_ignore=
+
+# Build prerequisites
+buildreq="\
+autoconf   2.72
+automake   1.16.5
+"
+
+gnulib_name=libgnu
+gnulib_files="doc/make-stds.texi m4/sig_atomic_t.m4"
+
+# Using the full strtoll module pulls in a lot of stuff.  But, it's pretty
+# simple to use just the base source file, so pull that.  We'll use it in
+# src/misc.c if strtoll() is not found.
+gnulib_files="$gnulib_files lib/strtol.c"
+
+gnulib_modules="\
+alloca
+fdl
+findprog-in
+getloadavg
+host-cpu-c-abi
+largefile
+make-glob
+make-macros"

build.cfg.in

@@ -0,0 +1,38 @@
+# Configuration for building GNU Make in the absence of any 'make' program.
+# @configure_input@
+
+# Copyright (C) 1993-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# See Makefile.in for comments describing these variables.
+
+top_srcdir='@top_srcdir@'
+
+prefix='@prefix@'
+exec_prefix=`eval echo @exec_prefix@`
+
+CC='@CC@'
+AR='@AR@'
+CFLAGS='@CFLAGS@ @GUILE_CFLAGS@'
+CPPFLAGS='@CPPFLAGS@'
+DEFS='@DEFS@'
+ARFLAGS='@ARFLAGS@'
+LDFLAGS='@AM_LDFLAGS@ @LDFLAGS@'
+ALLOCA='@ALLOCA@'
+LOADLIBES='@LIBS@ @GUILE_LIBS@ @LIBINTL@'
+REMOTE='@REMOTE@'
+OBJEXT='@OBJEXT@'
+EXEEXT='@EXEEXT@'

build.sh

@@ -0,0 +1,176 @@
+#!/bin/sh
+# Shell script to build GNU Make in the absence of any 'make' program.
+
+# Copyright (C) 1993-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Get configure-generated values
+. ./build.cfg
+
+die () { echo "$*" 1>&2; exit 1; }
+usage () { echo "$0 [-k]"; exit $1; }
+
+keep_going=false
+
+: ${OUTDIR:=.}
+OUTLIB="$OUTDIR/lib"
+
+# Directory to find libraries in for '-lXXX'.
+libdir=$exec_prefix/lib
+# Directory to search by default for included makefiles.
+includedir=$prefix/include
+
+localedir=$prefix/share/locale
+
+defines="-DLOCALEDIR=\"$localedir\" -DLIBDIR=\"$libdir\" -DINCLUDEDIR=\"$includedir\""
+
+# Look up a make variable value.
+# It can handle simple recursion where variables are separate words.
+# Print the value to stdout.
+get_mk_var ()
+{
+  v=$(sed -e :a -e '/\\$/N; s/\\\n//; ta' "$1" | sed -n "s=^ *$2 *\= *==p")
+  for w in $v; do
+    case $w in
+      (\$[\(\{]*[\)\}]) w=${w#\$[\(\{]}; (get_mk_var "$1" "${w%[\)\}]}") ;;
+      (*) echo "$w" ;;
+    esac
+  done
+}
+
+# Compile source files.  Object files are put into $objs.
+compile ()
+{
+  success=true
+  objs=
+  for ofile in "$@"; do
+    # We should try to use a Makefile variable like libgnu_a_SOURCES or
+    # something but just hardcode it.
+    file="${ofile%.$OBJEXT}.c"
+    case $file in
+        (lib/libgnu_a-*.c) file="lib/${file#lib/libgnu_a-}" ;;
+    esac
+    echo "compiling $file..."
+    of="$OUTDIR/$ofile"
+    mkdir -p "${of%/*}" || exit 1
+    if $CC $cflags $CPPFLAGS $CFLAGS -c -o "$of" "$top_srcdir/$file"; then
+        : worked
+    else
+        $keep_going || die "Compilation failed."
+        success=false
+    fi
+
+    objs="${objs:+$objs }$of"
+  done
+
+  $success
+}
+
+# Use config.status to convert a .in file.  Output file is put into $out.
+# $out will be empty if no conversion was needed.
+convert ()
+{
+  out=
+  base=$1
+  var="GENERATE_$(echo $base | tr 'a-z./+' A-Z__X)"
+
+  # Is this file disabled?
+  grep "${var}_FALSE\"]=\"\"" config.status >/dev/null && return 0
+
+  # If there's no .in file then no conversion needed
+  in="$top_srcdir/lib/$(echo ${base%.*}.in.${base##*.} | tr / _)"
+  test -f "$in" || return 0
+
+  # Not disabled, so create it
+  out="$OUTLIB/$base"
+  mkdir -p "${out%/*}"
+
+  # First perform the normal replacements, using config.status
+  sed -e 's|@GUARD_PREFIX@|GL|g' \
+      -e 's/@GNULIB_UNISTD_H_GETOPT@/0/g' \
+      "$in" > "${out}_"
+  ./config.status --file "${out}__:${out}_"
+  int="${out}__"
+
+  # Then see if there any files we need to include.  Unfortunately there's no
+  # algorithmic conversion so we just have to hard-code it.
+  incls=$(sed -n 's/.*definitions* of \(_[^ $]*\).*/\1/p' "$in")
+
+  for inc in $incls; do
+    case $inc in
+      (_GL_FUNCDECL_RPL) fn=$(get_mk_var lib/Makefile CXXDEFS_H) ;;
+      (_GL_ARG_NONNULL)  fn=$(get_mk_var lib/Makefile ARG_NONNULL_H) ;;
+      (_GL_WARN_ON_USE)  fn=$(get_mk_var lib/Makefile WARN_ON_USE_H) ;;
+      (_Noreturn)        fn=$(get_mk_var lib/Makefile _NORETURN_H) ;;
+      (*) echo "Unknown file replacement: $inc"; exit 1 ;;
+    esac
+
+    fn="$top_srcdir/lib/${fn##*/}"
+    test -f "$fn" || { echo "Missing file: $fn"; exit 1; }
+
+    sed "/definitions* of $inc/r $fn" "$int" > "${int}_"
+    int=${int}_
+  done
+
+  # Done!
+  mv "$int" "$out"
+}
+
+# Get source files provided from gnulib and convert to object files
+LIBOBJS=
+for lo in $( (get_mk_var lib/Makefile libgnu_a_OBJECTS; get_mk_var lib/Makefile libgnu_a_LIBADD) | sed "s=\$[\(\{]OBJEXT[\)\}]=$OBJEXT=g"); do
+  LIBOBJS="${LIBOBJS:+$LIBOBJS }lib/$lo"
+done
+
+# Get object files from the Makefile
+OBJS=$(get_mk_var Makefile make_OBJECTS | sed "s=\$[\(\{]OBJEXT[\)\}]=$OBJEXT=g")
+
+while test -n "$1"; do
+    case $1 in
+        (-k) keep_going=true; shift ;;
+        (--) shift; break ;;
+        (-[h?]) usage 0 ;;
+        (-*) echo "Unknown option: $1"; usage 1 ;;
+    esac
+done
+
+test -z "$1" || die "Unknown argument: $*"
+
+# Generate gnulib header files that would normally be created by make
+set -e
+for b in $(get_mk_var lib/Makefile BUILT_SOURCES); do
+    convert $b
+done
+set +e
+
+# Build the gnulib library
+cflags="$DEFS -I$OUTLIB -Ilib -I$top_srcdir/lib -I$OUTDIR/src -Isrc -I$top_srcdir/src"
+compile $LIBOBJS || die "Compilation failed."
+
+echo "creating libgnu.a..."
+$AR $ARFLAGS "$OUTLIB"/libgnu.a $objs || die "Archive of libgnu failed."
+
+# Compile the source files into those objects.
+cflags="$DEFS $defines -I$OUTDIR/src -Isrc -I$top_srcdir/src -I$OUTLIB -Ilib -I$top_srcdir/lib"
+compile $OBJS || die "Compilation failed."
+
+# Link all the objects together.
+echo "linking make..."
+$CC $CFLAGS $LDFLAGS -L"$OUTLIB" -o "$OUTDIR/makenew$EXEEXT" $objs -lgnu $LOADLIBES || die "Link failed."
+
+mv -f "$OUTDIR/makenew$EXEEXT" "$OUTDIR/make$EXEEXT" || exit 1
+
+echo done.

build_w32.bat

@@ -0,0 +1,498 @@
+@echo off
+:: Copyright (C) 1996-2024 Free Software Foundation, Inc.
+:: This file is part of GNU Make.
+::
+:: GNU Make is free software; you can redistribute it and/or modify it under
+:: the terms of the GNU General Public License as published by the Free
+:: Software Foundation; either version 3 of the License, or (at your option)
+:: any later version.
+::
+:: GNU Make is distributed in the hope that it will be useful, but WITHOUT
+:: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+:: FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+:: more details.
+::
+:: You should have received a copy of the GNU General Public License along
+:: with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+setlocal
+if not "%RECURSEME%"=="%~0" (
+    set "RECURSEME=%~0"
+    %ComSpec% /s /c ""%~0" %*"
+    goto :EOF
+)
+
+call :Reset
+
+if "%1" == "-h" goto Usage
+if "%1" == "--help" goto Usage
+
+echo.
+echo Creating GNU Make for Windows 9X/NT/2K/XP/Vista/7/8/10/11
+echo.
+
+set MAKE=gnumake
+set GUILE=Y
+set COMPILER=cl.exe
+set RC=rc.exe
+set O=obj
+set ARCH=x64
+set DEBUG=N
+set DIRENT=Y
+set VERBOSE=N
+
+if exist maintMakefile (
+    set MAINT=Y
+) else (
+    set MAINT=N
+)
+
+:ParseSW
+if "%1" == "--verbose" goto SetVerbose
+if "%1" == "--debug" goto SetDebug
+if "%1" == "--without-guile" goto NoGuile
+if "%1" == "--x86" goto Set32Bit
+if "%1" == "gcc" goto SetCC
+if "%1" == "tcc" goto SetTCC
+if "%1" == "" goto DoneSW
+goto Usage
+
+:SetVerbose
+set VERBOSE=Y
+shift
+goto ParseSW
+
+:SetDebug
+set DEBUG=Y
+echo - Building without compiler optimizations
+shift
+goto ParseSW
+
+:NoGuile
+set GUILE=N
+echo - Building without Guile
+shift
+goto ParseSW
+
+:Set32Bit
+set ARCH=x86
+echo - Building 32bit GNU Make
+shift
+goto ParseSW
+
+:SetCC
+set COMPILER=gcc
+set RC=windres
+set O=o
+echo - Building with GCC
+shift
+goto ParseSW
+
+:SetTCC
+set COMPILER=tcc
+set RC=windres
+set O=o
+echo - Building with TinyC
+shift
+goto ParseSW
+
+:DoneSW
+if "%MAINT%" == "Y" echo - Enabling maintainer mode
+
+if "%COMPILER%" == "gcc" goto FindGcc
+if "%COMPILER%" == "tcc" goto FindTcc
+
+:: Find a compiler.  Visual Studio requires a lot of effort to locate :-/.
+call %COMPILER% >nul 2>&1
+if not ERRORLEVEL 1 goto FoundMSVC
+
+:: Visual Studio 15 2017 and above provides the "vswhere" tool
+call :FindVswhere
+if ERRORLEVEL 1 goto LegacyVS
+
+for /f "tokens=* usebackq" %%i in (`"%VSWHERE%" -latest -property installationPath`) do (
+    set InstallPath=%%i
+)
+set "VSVARS=%InstallPath%\VC\Auxiliary\Build\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+:: No "vswhere" or it can't find a compiler.  Go old-school.
+:LegacyVS
+set "VSVARS=%VS150COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS140COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS120COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS110COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS100COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS90COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS80COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS71COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS70COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%V6TOOLS%\VC98\Bin\vcvars32.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%V6TOOLS%\VC97\Bin\vcvars32.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%V5TOOLS%\VC\Bin\vcvars32.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+:: We did not find anything--fail
+echo No MSVC compiler available.
+echo Please run vcvarsall.bat and/or configure your Path.
+exit 1
+
+:FoundMSVC
+set OUTDIR=.\WinRel
+set LNKOUT=./WinRel
+set "OPTS=/O2 /D NDEBUG"
+set LINKOPTS=
+if "%DEBUG%" == "Y" set OUTDIR=.\WinDebug
+if "%DEBUG%" == "Y" set LNKOUT=./WinDebug
+if "%DEBUG%" == "Y" set "OPTS=/Zi /Od /D _DEBUG"
+if "%DEBUG%" == "Y" set LINKOPTS=/DEBUG
+if "%MAINT%" == "Y" set "OPTS=%OPTS% /D MAKE_MAINTAINER_MODE"
+:: Show the compiler version that we found
+:: Unfortunately this also shows a "usage" note; I can't find anything better.
+echo.
+call %COMPILER%
+goto FindRC
+
+:FindGcc
+set OUTDIR=.\GccRel
+set LNKOUT=./GccRel
+set OPTS=-O2
+set DIRENT=N
+if "%DEBUG%" == "Y" set OPTS=-O0
+if "%DEBUG%" == "Y" set OUTDIR=.\GccDebug
+if "%DEBUG%" == "Y" set LNKOUT=./GccDebug
+if "%MAINT%" == "Y" set "OPTS=%OPTS% -DMAKE_MAINTAINER_MODE"
+:: Show the compiler version that we found
+echo.
+call %COMPILER% --version
+if not ERRORLEVEL 1 goto FindRC
+echo No %COMPILER% found.
+exit 1
+
+:FindTcc
+set OUTDIR=.\TccRel
+set LNKOUT=./TccRel
+set OPTS=-O2
+if "%DEBUG%" == "Y" set OPTS=-O0
+if "%DEBUG%" == "Y" set OUTDIR=.\TccDebug
+if "%DEBUG%" == "Y" set LNKOUT=./TccDebug
+if "%MAINT%" == "Y" set "OPTS=%OPTS% -DMAKE_MAINTAINER_MODE"
+:: Show the compiler version that we found
+echo.
+call %COMPILER% -v
+if not ERRORLEVEL 1 goto FindRC
+echo No %COMPILER% found.
+exit 1
+
+:FindRC
+set HAVE_RC=Y
+call where %RC% >nul 2>&1
+if not ERRORLEVEL 1 goto Build
+echo.
+echo %RC% was not found. Building without UTF-8 resource.
+set HAVE_RC=N
+
+:Build
+echo.
+:: Clean the directory if it exists
+if exist %OUTDIR%\nul rmdir /S /Q %OUTDIR%
+
+:: Recreate it
+mkdir %OUTDIR%
+mkdir %OUTDIR%\src
+mkdir %OUTDIR%\src\w32
+mkdir %OUTDIR%\src\w32\compat
+mkdir %OUTDIR%\src\w32\subproc
+mkdir %OUTDIR%\lib
+
+if "%GUILE%" == "Y" call :ChkGuile
+
+if not exist src\config.h.W32 goto NotConfig
+
+echo.
+echo Compiling %OUTDIR% version
+
+copy src\config.h.W32 %OUTDIR%\src\config.h
+
+copy lib\glob.in.h %OUTDIR%\lib\glob.h
+copy lib\fnmatch.in.h %OUTDIR%\lib\fnmatch.h
+
+if exist %OUTDIR%\link.sc del %OUTDIR%\link.sc
+
+call :Compile src/ar
+call :Compile src/arscan
+call :Compile src/commands
+call :Compile src/default
+call :Compile src/dir
+call :Compile src/expand
+call :Compile src/file
+call :Compile src/function
+call :Compile src/getopt
+call :Compile src/getopt1
+call :Compile src/guile GUILE
+call :Compile src/hash
+call :Compile src/implicit
+call :Compile src/job
+call :Compile src/load
+call :Compile src/loadapi
+call :Compile src/main GUILE
+call :Compile src/misc
+call :Compile src/output
+call :Compile src/read
+call :Compile src/remake
+call :Compile src/remote-stub
+call :Compile src/rule
+call :Compile src/shuffle
+call :Compile src/signame
+call :Compile src/strcache
+call :Compile src/variable
+call :Compile src/version
+call :Compile src/vpath
+call :Compile src/warning
+call :Compile src/w32/pathstuff
+call :Compile src/w32/w32os
+call :Compile src/w32/compat/posixfcn
+call :Compile src/w32/subproc/misc
+call :Compile src/w32/subproc/sub_proc
+call :Compile src/w32/subproc/w32err
+call :Compile lib/fnmatch
+call :Compile lib/glob
+call :Compile lib/getloadavg
+
+:: Compile dirent unless it is supported by compiler library (like with gcc).
+if "%DIRENT%" == "Y" call :Compile src\w32\compat\dirent
+
+:: Compile UTF-8 resource if a resource compiler is available.
+if "%HAVE_RC%" == "Y" call :ResourceCompile src/w32/utf8
+
+call :Link
+
+echo.
+if exist %OUTDIR%\%MAKE%.exe goto Success
+echo %OUTDIR% build FAILED!
+exit 1
+
+:Success
+echo %OUTDIR% build succeeded.
+if exist Basic.mk copy /Y Basic.mk Makefile
+if not exist tests\config-flags.pm copy /Y tests\config-flags.pm.W32 tests\config-flags.pm
+call :Reset
+goto :EOF
+
+::
+:: Subroutines
+::
+
+:Compile
+if "%VERBOSE%" == "N" echo - Compiling %1.c
+echo %LNKOUT%/%1.%O% >>%OUTDIR%\link.sc
+set EXTRAS=
+if "%2" == "GUILE" set "EXTRAS=%GUILECFLAGS%"
+if exist "%OUTDIR%\%1.%O%" del "%OUTDIR%\%1.%O%"
+if "%COMPILER%" == "gcc" goto GccCompile
+if "%COMPILER%" == "tcc" goto TccCompile
+
+:: MSVC Compile
+if "%VERBOSE%" == "Y" echo on
+call %COMPILER% /nologo /MT /W4 /EHsc %OPTS% /I %OUTDIR%/src /I src /I %OUTDIR%/lib /I lib /I src/w32/include /D _CONSOLE /D HAVE_CONFIG_H /FR%OUTDIR% /Fp%OUTDIR%\%MAKE%.pch /Fo%OUTDIR%\%1.%O% /Fd%OUTDIR%\%MAKE%.pdb %EXTRAS% /c %1.c
+@echo off
+goto CompileDone
+
+:GccCompile
+:: GCC Compile
+if "%VERBOSE%" == "Y" echo on
+call %COMPILER% -mthreads -Wall -std=gnu99 -gdwarf-2 -g3 %OPTS% -I%OUTDIR%/src -I./src -I%OUTDIR%/lib -I./lib -I./src/w32/include -DHAVE_CONFIG_H %EXTRAS% -o %OUTDIR%/%1.%O% -c %1.c
+@echo off
+goto CompileDone
+
+:TccCompile
+:: TCC Compile
+if "%VERBOSE%" == "Y" echo on
+call %COMPILER% -mthreads -Wall -std=c11 %OPTS% -I%OUTDIR%/src -I./src -I%OUTDIR%/lib -I./lib -I./src/w32/include -D_cdecl= -D_MSC_VER -DHAVE_CONFIG_H %EXTRAS% -o %OUTDIR%/%1.%O% -c %1.c
+@echo off
+goto CompileDone
+
+:ResourceCompile
+if "%VERBOSE%" == "N" echo - Compiling %1.rc
+echo %LNKOUT%/%1.%O% >>%OUTDIR%\link.sc
+if exist "%OUTDIR%\%1.%O%" del "%OUTDIR%\%1.%O%"
+if "%COMPILER%" == "gcc" goto GccResourceCompile
+if "%COMPILER%" == "tcc" goto TccResourceCompile
+
+:: MSVC Resource Compile
+if "%VERBOSE%" == "Y" echo on
+call %RC% /fo %OUTDIR%\%1.%O% %1.rc
+@echo off
+goto CompileDone
+
+:GccResourceCompile
+:: GCC Resource Compile
+if "%VERBOSE%" == "Y" echo on
+call %RC% -o %OUTDIR%/%1.%O% -i %1.rc
+@echo off
+goto CompileDone
+
+:TccResourceCompile
+:: TCC Resource Compile
+goto GccResourceCompile
+
+:CompileDone
+if not exist "%OUTDIR%\%1.%O%" exit 1
+goto :EOF
+
+:Link
+echo.
+echo - Linking %LNKOUT%/%MAKE%.exe
+if "%COMPILER%" == "gcc" goto GccLink
+if "%COMPILER%" == "tcc" goto TccLink
+
+:: MSVC Link
+echo %GUILELIBS% kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib >>%OUTDIR%\link.sc
+if "%VERBOSE%" == "Y" echo on
+call link.exe /NOLOGO /SUBSYSTEM:console /PDB:%LNKOUT%\%MAKE%.pdb %LINKOPTS% /OUT:%LNKOUT%\%MAKE%.exe @%LNKOUT%\link.sc
+@echo off
+goto :EOF
+
+:GccLink
+:: GCC Link
+if "%VERBOSE%" == "Y" echo on
+echo %GUILELIBS% -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -luuid -lodbc32 -lodbccp32 >>%OUTDIR%\link.sc
+call %COMPILER% -mthreads -gdwarf-2 -g3 %OPTS% -o %LNKOUT%/%MAKE%.exe @%LNKOUT%/link.sc -Wl,--out-implib=%LNKOUT%/libgnumake-1.dll.a
+@echo off
+goto :EOF
+
+:TccLink
+:: TCC Link
+if "%VERBOSE%" == "Y" echo on
+echo %GUILELIBS% -lkernel32 -luser32 -lgdi32 -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lodbc32 -lodbccp32 >>%OUTDIR%\link.sc
+call %COMPILER% -mthreads %OPTS% -o %LNKOUT%/%MAKE%.exe @%LNKOUT%/link.sc 
+@echo off
+goto :EOF
+
+:ChkGuile
+:: Build with Guile is supported only on NT and later versions
+if not "%OS%" == "Windows_NT" goto NoGuile
+call pkg-config --help > %OUTDIR%\guile.tmp 2> NUL
+if ERRORLEVEL 1 goto NoPkgCfg
+
+set PKGMSC=
+if not "%COMPILER%" == "gcc" set PKGMSC=--msvc-syntax
+
+echo Checking for Guile 2.0
+call pkg-config --cflags --short-errors "guile-2.0" > %OUTDIR%\gl-c2.tmp 2> NUL
+if not ERRORLEVEL 1 set /P GUILECFLAGS= < %OUTDIR%\gl-c2.tmp
+
+call pkg-config --libs --static --short-errors %PKGMSC% "guile-2.0" > %OUTDIR%\gl-l2.tmp 2> NUL
+if not ERRORLEVEL 1 set /P GUILELIBS= < %OUTDIR%\gl-l2.tmp
+
+if not "%GUILECFLAGS%" == "" goto GuileDone
+
+echo Checking for Guile 1.8
+call pkg-config --cflags --short-errors "guile-1.8" > %OUTDIR%\gl-c18.tmp 2> NUL
+if not ERRORLEVEL 1 set /P GUILECFLAGS= < %OUTDIR%\gl-c18.tmp
+
+call pkg-config --libs --static --short-errors %PKGMSC% "guile-1.8" > %OUTDIR%\gl-l18.tmp 2> NUL
+if not ERRORLEVEL 1 set /P GUILELIBS= < %OUTDIR%\gl-l18.tmp
+
+if not "%GUILECFLAGS%" == "" goto GuileDone
+
+echo - No Guile found, building without Guile
+goto GuileDone
+
+:NoPkgCfg
+echo - pkg-config not found, building without Guile
+
+:GuileDone
+if "%GUILECFLAGS%" == "" goto :EOF
+
+echo - Guile found: building with Guile
+set "GUILECFLAGS=%GUILECFLAGS% -DHAVE_GUILE"
+goto :EOF
+
+:FindVswhere
+set VSWHERE=vswhere
+call "%VSWHERE%" -help >nul 2>&1
+if not ERRORLEVEL 1 exit /b 0
+set "VSWHERE=C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere"
+call "%VSWHERE%" -help >nul 2>&1
+if ERRORLEVEL 1 exit /b 1
+goto :EOF
+
+:CheckMSVC
+if not exist "%VSVARS%" exit /b 1
+call "%VSVARS%" %ARCH%
+if ERRORLEVEL 1 exit /b 1
+call %COMPILER% >nul 2>&1
+if ERRORLEVEL 1 exit /b 1
+goto :EOF
+
+:NotConfig
+echo.
+echo *** This workspace is not configured.
+echo Either retrieve the configured source in the release tarball
+echo or, if building from Git, run the .\bootstrap.bat script first.
+exit /b 1
+
+:Usage
+echo Usage: %0 [options] [gcc] OR [tcc]
+echo Options:
+echo.  --without-guile   Do not compile Guile support even if found
+echo.  --debug           Make a Debug build--default is Release
+echo.  --x86             Make a 32bit binary--default is 64bit
+echo.  --help            Display these instructions and exit
+echo.
+echo. "gcc" means compile with GCC, "tcc" means compile with Tiny C's TCC
+goto :EOF
+
+:Reset
+set ARCH=
+set COMPILER=
+set DEBUG=
+set GUILE=
+set GUILECFLAGS=
+set GUILELIBS=
+set LINKOPTS=
+set MAKE=
+set NOGUILE=
+set O=
+set OPTS=
+set OUTDIR=
+set LNKOUT=
+set PKGMSC=
+set VSVARS=
+goto :EOF

builddos.bat

@@ -0,0 +1,98 @@
+@echo off
+rem Copyright (C) 1998-2024 Free Software Foundation, Inc.
+rem This file is part of GNU Make.
+rem
+rem GNU Make is free software; you can redistribute it and/or modify it under
+rem the terms of the GNU General Public License as published by the Free
+rem Software Foundation; either version 3 of the License, or (at your option)
+rem any later version.
+rem
+rem GNU Make is distributed in the hope that it will be useful, but WITHOUT
+rem ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+rem FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+rem more details.
+rem
+rem You should have received a copy of the GNU General Public License along
+rem with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+echo Building Make for MSDOS with DJGPP
+
+rem The SmallEnv trick protects against too small environment block,
+rem in which case the values will be truncated and the whole thing
+rem goes awry.  COMMAND.COM will say "Out of environment space", but
+rem many people don't care, so we force them to care by refusing to go.
+
+rem Where is the srcdir?
+set XSRC=.
+if not "%XSRC%"=="." goto SmallEnv
+if "%1%"=="" goto SrcDone
+if "%1%"=="." goto SrcDone
+set XSRC=%1
+
+if not "%XSRC%"=="%1" goto SmallEnv
+
+:SrcDone
+
+if not exist src mkdir src
+if not exist lib mkdir lib
+
+copy /Y %XSRC%\src\configh.dos .\src\config.h
+
+copy /Y %XSRC%\lib\glob.in.h .\lib\glob.h
+copy /Y %XSRC%\lib\fnmatch.in.h .\lib\fnmatch.h
+
+rem Echo ON so they will see what is going on.
+@echo on
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/commands.c -o commands.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/output.c -o output.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/job.c -o job.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/dir.c -o dir.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/file.c -o file.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/misc.c -o misc.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -DLOCALEDIR=\"/dev/env/DJDIR/share/locale\" -O2 -g %XSRC%/src/main.c -o main.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -DINCLUDEDIR=\"/dev/env/DJDIR/include\" -O2 -g %XSRC%/src/read.c -o read.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -DLIBDIR=\"/dev/env/DJDIR/lib\" -O2 -g %XSRC%/src/remake.c -o remake.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/rule.c -o rule.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/implicit.c -o implicit.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/default.c -o default.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/variable.c -o variable.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/warning.c -o warning.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/expand.c -o expand.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/function.c -o function.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/vpath.c -o vpath.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/hash.c -o hash.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/strcache.c -o strcache.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/version.c -o version.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/ar.c -o ar.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/arscan.c -o arscan.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/signame.c -o signame.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/remote-stub.c -o remote-stub.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/getopt.c -o getopt.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/getopt1.c -o getopt1.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/shuffle.c -o shuffle.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/load.c -o load.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/lib/glob.c -o lib/glob.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/lib/fnmatch.c -o lib/fnmatch.o
+@echo off
+echo commands.o > respf.$$$
+for %%f in (job output dir file misc main read remake rule implicit default variable warning load) do echo %%f.o >> respf.$$$
+for %%f in (expand function vpath hash strcache version ar arscan signame remote-stub getopt getopt1 shuffle) do echo %%f.o >> respf.$$$
+for %%f in (lib\glob lib\fnmatch) do echo %%f.o >> respf.$$$
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/guile.c -o guile.o
+echo guile.o >> respf.$$$
+@echo Linking...
+@echo on
+gcc -o make.exe @respf.$$$
+@echo off
+if not exist make.exe echo Make.exe build failed...
+if exist make.exe echo make.exe is now built!
+if exist make.exe del respf.$$$
+if exist make.exe copy /Y %XSRC%\Basic.mk Makefile
+goto End
+
+:SmallEnv
+echo Your environment is too small.  Please enlarge it and run me again.
+
+:End
+set XRSC=
+@echo on

configure.ac

@@ -0,0 +1,567 @@
+# Process this file with autoconf to produce a configure script.
+#
+# Copyright (C) 1993-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+AC_INIT([GNU Make],[4.4.90],[bug-make@gnu.org])
+
+AC_PREREQ([2.69])
+
+# Autoconf setup
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_SRCDIR([src/vpath.c])
+AC_CONFIG_HEADERS([src/config.h])
+
+AC_CONFIG_LIBOBJ_DIR([lib])
+
+# Automake setup
+# We have to enable "foreign" because ChangeLog is auto-generated
+# Automake 1.15 and gnulib don't get along: gnulib has some strange error
+# in the way it handles getloadavg.c which causes make distcheck to fail.
+# https://lists.gnu.org/archive/html/bug-gnulib/2018-06/msg00024.html
+AM_INIT_AUTOMAKE([1.16.1 foreign -Werror -Wall])
+
+# Checks for programs.
+AC_USE_SYSTEM_EXTENSIONS
+AC_PROG_CC
+AC_PROG_CXX
+AC_DEFINE_UNQUOTED(MAKE_CXX, ["$CXX"], [Default C++ compiler.])
+
+# Configure gnulib
+gl_EARLY
+gl_INIT
+
+AC_PROG_INSTALL
+AC_PROG_RANLIB
+AC_PROG_CPP
+AC_CHECK_PROG([AR], [ar], [ar], [ar])
+# Perl is needed for the test suite (only)
+AC_CHECK_PROG([PERL], [perl], [perl], [perl])
+
+# Specialized system macros
+AC_CANONICAL_HOST
+AC_C_BIGENDIAN
+
+# Enable gettext, in "external" mode.
+AM_GNU_GETTEXT_VERSION([0.19.4])
+AM_GNU_GETTEXT([external])
+
+# Checks for libraries.
+AC_SEARCH_LIBS([strerror],[cposix])
+AC_SEARCH_LIBS([getpwnam], [sun])
+
+AC_HEADER_DIRENT
+AC_HEADER_STAT
+
+AC_CHECK_HEADERS([stdlib.h string.h strings.h locale.h unistd.h limits.h \
+                  memory.h sys/param.h sys/resource.h sys/time.h sys/select.h \
+                  sys/file.h fcntl.h spawn.h])
+
+AM_PROG_CC_C_O
+AC_C_CONST
+AC_TYPE_UID_T
+AC_TYPE_PID_T
+AC_TYPE_OFF_T
+AC_TYPE_SIZE_T
+AC_TYPE_SSIZE_T
+AC_TYPE_INTMAX_T
+AC_TYPE_UINTMAX_T
+
+# Check for sig_atomic_t
+gt_TYPE_SIG_ATOMIC_T
+
+# Find out whether our struct stat returns nanosecond resolution timestamps.
+
+AC_STRUCT_ST_MTIM_NSEC
+AC_CACHE_CHECK([whether to use high resolution file timestamps],
+               [make_cv_file_timestamp_hi_res],
+[ make_cv_file_timestamp_hi_res=no
+  AS_IF([test "$ac_cv_struct_st_mtim_nsec" != no],
+        [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif]],
+                      [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
+        [make_cv_file_timestamp_hi_res=yes])
+  ])])
+AS_IF([test "$make_cv_file_timestamp_hi_res" = yes], [val=1], [val=0])
+AC_DEFINE_UNQUOTED([FILE_TIMESTAMP_HI_RES], [$val],
+                   [Use high resolution file timestamps if nonzero.])
+
+AS_IF([test "$make_cv_file_timestamp_hi_res" = yes],
+[ # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
+  # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
+  AC_SEARCH_LIBS([clock_gettime], [rt posix4])
+  AS_IF([test "$ac_cv_search_clock_gettime" != no],
+  [ AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
+              [Define to 1 if you have the clock_gettime function.])
+  ])
+])
+
+# See if we have a standard version of gettimeofday().  Since actual
+# implementations can differ, just make sure we have the most common
+# one.
+AC_CACHE_CHECK([for standard gettimeofday], [ac_cv_func_gettimeofday],
+  [ac_cv_func_gettimeofday=no
+   AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
+                  int main ()
+                  {
+                    struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
+                    return gettimeofday (&t, 0) != 0
+                          || t.tv_sec < 0 || t.tv_usec < 0;
+                  }]])],
+                  [ac_cv_func_gettimeofday=yes],
+                  [ac_cv_func_gettimeofday=no],
+                  [ac_cv_func_gettimeofday="no (cross-compiling)"])])
+AS_IF([test "$ac_cv_func_gettimeofday" = yes],
+[ AC_DEFINE([HAVE_GETTIMEOFDAY], [1],
+            [Define to 1 if you have a standard gettimeofday function])
+])
+
+AC_CHECK_FUNCS([strtoll strdup strndup stpcpy memrchr mempcpy umask mkstemp \
+                mktemp fdopen dup dup2 getcwd realpath sigsetmask sigaction \
+                getgroups seteuid setegid setlinebuf setreuid setregid \
+                mkfifo getrlimit setrlimit setvbuf pipe strerror strsignal \
+                lstat readlink atexit isatty ttyname pselect posix_spawn \
+                posix_spawnattr_setsigmask])
+
+# We need to check declarations, not just existence, because on Tru64 this
+# function is not declared without special flags, which themselves cause
+# other problems.  We'll just use our own.
+AC_CHECK_DECLS([bsd_signal], [], [], [[#define _GNU_SOURCE 1
+#include <signal.h>]])
+
+AC_FUNC_FORK
+
+# Rumor has it that strcasecmp lives in -lresolv on some odd systems.
+# It doesn't hurt much to use our own if we can't find it so I don't
+# make the effort here.
+AC_CHECK_FUNCS([strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp])
+
+# strcoll() is used by the GNU glob library
+AC_FUNC_STRCOLL
+AC_FUNC_CLOSEDIR_VOID
+
+# dir.c and our glob.c use dirent.d_type if available
+AC_STRUCT_DIRENT_D_TYPE
+
+# See if the user wants to add (or not) GNU Guile support
+AC_ARG_WITH([guile], [AS_HELP_STRING([--with-guile],
+            [Support GNU Guile for embedded scripting])])
+
+# Annoyingly, each version of Guile comes with it's own PC file so we have to
+# specify them as individual packages.  Ugh.
+PKG_PROG_PKG_CONFIG
+
+AS_IF([test "x$with_guile" != xno],
+[ guile_versions="3.0 2.2 2.0 1.8"
+  guile_version=no
+  have_guile=no
+  AC_MSG_CHECKING([for GNU Guile])
+  for v in $guile_versions; do
+    PKG_CHECK_EXISTS([guile-$v], [guile_version=$v; have_guile=yes; break], [])
+  done
+  AC_MSG_RESULT([$guile_version])
+  AS_IF([test "$have_guile" = yes],
+  [ PKG_CHECK_MODULES(GUILE, [guile-$guile_version])
+    # Unfortunately pkg doesn't help in multi-arch environments where the
+    # package is installed for some architectures but not others; we need
+    # to try to link.
+    keep_CPPFLAGS="$CPPFLAGS"
+    keep_LIBS="$LIBS"
+    CPPFLAGS="$CPPFLAGS $GUILE_CFLAGS"
+    LIBS="$LIBS $GUILE_LIBS"
+    AC_CHECK_HEADER([libguile.h],
+                    [have_guile=yes],
+                    [have_guile=no],
+                    [/* Avoid configuration error warnings. */])
+    AS_IF([test "$have_guile" = yes],
+    [ AC_MSG_CHECKING([whether we can link GNU Guile])
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <libguile.h>
+static void *
+guile_init (void *arg)
+{
+   (void) arg;
+   return 0;
+}
+]], [[
+    scm_with_guile (guile_init, 0);
+]])],
+        [have_guile=yes],
+        [have_guile=no])
+      AC_MSG_RESULT([$have_guile])])
+    CPPFLAGS="$keep_CPPFLAGS"
+    LIBS="$keep_LIBS"
+  ])
+])
+
+AS_IF([test "$have_guile" = yes],
+      [AC_DEFINE([HAVE_GUILE], [1], [Embed GNU Guile support])])
+AM_CONDITIONAL([HAVE_GUILE], [test "$have_guile" = "yes"])
+
+AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
+  [AC_INCLUDES_DEFAULT
+#include <signal.h>
+/* NetBSD declares sys_siglist in unistd.h.  */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+])
+
+
+# Check out the wait reality.
+AC_CHECK_HEADERS([sys/wait.h],[],[],[[#include <sys/types.h>]])
+AC_CHECK_FUNCS([waitpid wait3])
+AC_CACHE_CHECK([for union wait], [make_cv_union_wait],
+[ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#include <sys/wait.h>]],
+     [[union wait status; int pid; pid = wait (&status);
+#ifdef WEXITSTATUS
+/* Some POSIXoid systems have both the new-style macros and the old
+   union wait type, and they do not work together.  If union wait
+   conflicts with WEXITSTATUS et al, we don't want to use it at all.  */
+        if (WEXITSTATUS (status) != 0) pid = -1;
+#ifdef WTERMSIG
+        /* If we have WEXITSTATUS and WTERMSIG, just use them on ints.  */
+        -- blow chunks here --
+#endif
+#endif
+#ifdef HAVE_WAITPID
+        /* Make sure union wait works with waitpid.  */
+        pid = waitpid (-1, &status, 0);
+#endif
+      ]])],
+    [make_cv_union_wait=yes],
+    [make_cv_union_wait=no])
+])
+AS_IF([test "$make_cv_union_wait" = yes],
+[ AC_DEFINE([HAVE_UNION_WAIT], [1],
+            [Define to 1 if you have the 'union wait' type in <sys/wait.h>.])
+])
+
+
+# If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
+AS_IF([test "$PATH_SEPARATOR" = ';'],
+[ AC_DEFINE([HAVE_DOS_PATHS], [1],
+            [Define to 1 if your system requires backslashes or drive specs in pathnames.])
+])
+
+# See if the user wants to use pmake's "customs" distributed build capability
+AC_SUBST([REMOTE]) REMOTE=stub
+use_customs=false
+AC_ARG_WITH([customs],
+[AS_HELP_STRING([--with-customs=DIR],[enable remote jobs via Customs--see README.customs])],
+[ AS_CASE([$withval], [n|no], [:],
+    [make_cppflags="$CPPFLAGS"
+     AS_CASE([$withval],
+             [y|ye|yes], [:],
+             [CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
+              make_ldflags="$LDFLAGS -L$with_customs/lib"])
+     CF_NETLIBS
+     AC_CHECK_HEADER([customs.h],
+                     [use_customs=true
+                      REMOTE=cstms
+                      LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
+                     [with_customs=no
+                      CPPFLAGS="$make_cppflags" make_badcust=yes])
+    ])
+])
+
+# Tell automake about this, so it can include the right .c files.
+AM_CONDITIONAL([USE_CUSTOMS], [test "$use_customs" = true])
+
+# See if the user asked to handle case insensitive file systems.
+AH_TEMPLATE([HAVE_CASE_INSENSITIVE_FS], [Use case insensitive file names])
+AC_ARG_ENABLE([case-insensitive-file-system],
+  AS_HELP_STRING([--enable-case-insensitive-file-system],[assume file systems are case insensitive]),
+  [AS_IF([test "$enableval" = yes], [AC_DEFINE([HAVE_CASE_INSENSITIVE_FS])])])
+
+# See if we can handle the job server feature, and if the user wants it.
+AC_ARG_ENABLE([job-server],
+  AS_HELP_STRING([--disable-job-server],[disallow recursive make communication during -jN]),
+  [make_cv_job_server="$enableval" user_job_server="$enableval"],
+  [make_cv_job_server="yes"])
+
+AS_IF([test "$ac_cv_func_waitpid" = no && test "$ac_cv_func_wait3" = no],
+      [has_wait_nohang=no],
+      [has_wait_nohang=yes])
+
+AC_CACHE_CHECK([for SA_RESTART], [make_cv_sa_restart], [
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
+      [[return SA_RESTART;]])],
+    [make_cv_sa_restart=yes],
+    [make_cv_sa_restart=no])])
+
+AS_IF([test "$make_cv_sa_restart" != no],
+[ AC_DEFINE([HAVE_SA_RESTART], [1],
+     [Define to 1 if <signal.h> defines the SA_RESTART constant.])
+])
+
+# Only allow jobserver on systems that support it
+AS_CASE([/$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/],
+  [*/no/*], [make_cv_job_server=no])
+
+# Also supported on OS2 and MinGW
+AS_CASE([$host_os], [os2*|mingw*], [make_cv_job_server=yes])
+
+# If we support it and the user didn't disable it, build with jobserver
+AS_CASE([/$make_cv_job_server/$user_job_server/],
+  [*/no/*], [: no jobserver],
+  [AC_DEFINE(MAKE_JOBSERVER, 1,
+             [Define to 1 to enable job server support in GNU Make.])
+  ])
+
+# If dl*() functions are supported we can enable the load operation
+AC_CHECK_DECLS([dlopen, dlsym, dlerror], [], [],
+  [[#include <dlfcn.h>]])
+
+AC_ARG_ENABLE([load],
+  AS_HELP_STRING([--disable-load],[disable support for the 'load' operation]),
+  [make_cv_load="$enableval" user_load="$enableval"],
+  [make_cv_load="yes"])
+
+AS_CASE([/$ac_cv_have_decl_dlopen/$ac_cv_have_decl_dlsym/$ac_cv_have_decl_dlerror/],
+  [*/no/*], [make_cv_load=no])
+
+# We might need -ldl
+AS_IF([test "$make_cv_load" = yes], [
+  AC_SEARCH_LIBS([dlopen], [dl], [], [make_cv_load=])
+  ])
+
+AS_CASE([/$make_cv_load/$user_load/],
+  [*/no/*], [make_cv_load=no],
+  [AC_DEFINE(MAKE_LOAD, 1,
+             [Define to 1 to enable 'load' support in GNU Make.])
+  ])
+
+# If we want load support, we might need to link with export-dynamic.
+# See if we can figure it out.  Unfortunately this is very difficult.
+# For example passing -rdynamic to the SunPRO linker gives a warning
+# but succeeds and creates a shared object, not an executable!
+AS_IF([test "$make_cv_load" = yes], [
+  AC_MSG_CHECKING([if the linker accepts -Wl,--export-dynamic])
+  old_LDFLAGS="$LDFLAGS"
+  LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
+  AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
+    [AC_MSG_RESULT([yes])
+     AC_SUBST([AM_LDFLAGS], [-Wl,--export-dynamic])],
+    [AC_MSG_RESULT([no])
+     AC_MSG_CHECKING([if the linker accepts -rdynamic])
+     LDFLAGS="$old_LDFLAGS -rdynamic"
+     AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
+       [AC_MSG_RESULT([yes])
+        AC_SUBST([AM_LDFLAGS], [-rdynamic])],
+       [AC_MSG_RESULT([no])])
+   ])
+  LDFLAGS="$old_LDFLAGS"
+])
+
+# if we have both lstat() and readlink() then we can support symlink
+# timechecks.
+AS_IF([test "$ac_cv_func_lstat" = yes && test "$ac_cv_func_readlink" = yes],
+  [ AC_DEFINE([MAKE_SYMLINKS], [1],
+              [Define to 1 to enable symbolic link timestamp checking.])
+])
+
+# Use posix_spawn if we have support and the user didn't disable it
+
+AC_ARG_ENABLE([posix-spawn],
+  AS_HELP_STRING([--disable-posix-spawn],[disable support for posix_spawn()]),
+  [make_cv_posix_spawn="$enableval" user_posix_spawn="$enableval"],
+  [make_cv_posix_spawn="yes"])
+
+AS_CASE([/$ac_cv_header_spawn/$ac_cv_func_posix_spawn/],
+  [*/no/*], [make_cv_posix_spawn=no])
+
+AS_IF([test "$make_cv_posix_spawn" = yes],
+  AC_CACHE_CHECK([for posix_spawn that fails synchronously],
+    [make_cv_synchronous_posix_spawn],
+    [make_cv_synchronous_posix_spawn=no
+     AC_RUN_IFELSE([AC_LANG_SOURCE([[
+       #include <errno.h>
+       #include <spawn.h>
+       extern char **environ;
+       int main () {
+         char path[[]] = "./xxx-non-existent";
+         char *argv[[]] = {path, 0};
+         return posix_spawn (0, path, 0, 0, argv, environ) == ENOENT ? 0 : 1;
+       }]])],
+       [make_cv_synchronous_posix_spawn=yes],
+       [make_cv_synchronous_posix_spawn=no],
+       [make_cv_synchronous_posix_spawn="no (cross-compiling)"])]))
+
+AS_CASE([/$user_posix_spawn/$make_cv_posix_spawn/$make_cv_synchronous_posix_spawn/],
+  [*/no/*], [make_cv_posix_spawn=no],
+  [AC_DEFINE(USE_POSIX_SPAWN, 1, [Define to 1 to use posix_spawn().])
+  ])
+
+# Find the SCCS commands, so we can include them in our default rules.
+
+AC_CACHE_CHECK([for location of SCCS get command], [make_cv_path_sccs_get], [
+  AS_IF([test -f /usr/sccs/get],
+        [make_cv_path_sccs_get=/usr/sccs/get],
+        [make_cv_path_sccs_get=get])
+])
+AC_DEFINE_UNQUOTED([SCCS_GET], ["$make_cv_path_sccs_get"],
+                   [Define to the name of the SCCS 'get' command.])
+
+ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
+AS_IF([(/usr/sccs/admin -n s.conftest || admin -n s.conftest) >/dev/null 2>&1 &&
+   test -f s.conftest],
+[ # We successfully created an SCCS file.
+  AC_CACHE_CHECK([if SCCS get command understands -G], [make_cv_sys_get_minus_G],
+    [AS_IF([$make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
+            test -f conftoast],
+           [make_cv_sys_get_minus_G=yes],
+           [make_cv_sys_get_minus_G=no])
+    ])
+  AS_IF([test "$make_cv_sys_get_minus_G" = yes],
+    [AC_DEFINE([SCCS_GET_MINUS_G], [1],
+     [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.])
+    ])
+])
+rm -f s.conftest conftoast
+
+# Let the makefile know what our build host is
+
+AC_DEFINE_UNQUOTED([MAKE_HOST],["$host"],[Build host information.])
+MAKE_HOST="$host"
+AC_SUBST([MAKE_HOST])
+
+w32_target_env=no
+AM_CONDITIONAL([WINDOWSENV], [false])
+AM_CONDITIONAL([HAVE_WINDRES], [false])
+
+AS_CASE([$host],
+  [*-*-mingw32],
+   [AM_CONDITIONAL([WINDOWSENV], [true])
+    w32_target_env=yes
+    AC_DEFINE([MK_OS_W32], [1], [Build for the Windows32 API.])
+    AC_DEFINE([HAVE_DOS_PATHS], [1], [Support DOS-style pathnames.])
+    # Windows host tools.
+    # If windres is available, make will use UTF-8.
+    AC_CHECK_TOOL([WINDRES], [windres], [:])
+    AM_CONDITIONAL([HAVE_WINDRES], [test "$WINDRES" != ':'])
+  ])
+
+AC_DEFINE_UNQUOTED([PATH_SEPARATOR_CHAR],['$PATH_SEPARATOR'],
+        [Define to the character that separates directories in PATH.])
+
+AC_DEFINE_UNQUOTED([HAVE_DECL_GETLOADAVG],[$HAVE_DECL_GETLOADAVG],
+        [Define to 1 if you have the declaration of 'getloadavg'.])
+
+# Remember that we ran configure to generate config.h
+
+AC_DEFINE([MK_CONFIGURE], [1],
+          [Define to 1 if config.h is generated by running the configure script.])
+
+# Include the Maintainer's Makefile section, if it's here.
+
+MAINT_MAKEFILE=/dev/null
+AS_IF([test -r "$srcdir/maintMakefile"],
+[ MAINT_MAKEFILE="$srcdir/maintMakefile"
+])
+AC_SUBST_FILE([MAINT_MAKEFILE])
+
+# Allow building with dmalloc
+AM_WITH_DMALLOC
+
+# Add custom header to config.h
+AH_BOTTOM([/* Include customized declarations.  */
+#include "../src/mkcustom.h"])
+
+# Forcibly disable SET_MAKE.  If it's set it breaks things like the test
+# scripts, etc.
+SET_MAKE=
+
+# Sanity check and inform the user of what we found
+
+AS_IF([test "x$make_badcust" = xyes], [
+echo
+echo "WARNING: --with-customs specified but no customs.h could be found;"
+echo "         disabling Customs support."
+echo
+])
+
+AS_CASE([$with_customs],
+[""|n|no|y|ye|yes], [:],
+[AS_IF([test -f "$with_customs/lib/libcustoms.a"], [:],
+[ echo
+  echo "WARNING: '$with_customs/lib' does not appear to contain the"
+  echo "         Customs library.  You must build and install Customs"
+  echo "         before compiling GNU Make."
+  echo
+])])
+
+AS_IF([test "x$has_wait_nohang" = xno],
+[ echo
+  echo "WARNING: Your system has neither waitpid() nor wait3()."
+  echo "         Without one of these, signal handling is unreliable."
+  echo "         You should be aware that running GNU Make with -j"
+  echo "         could result in erratic behavior."
+  echo
+])
+
+AS_IF([test "x$make_cv_job_server" = xno && test "x$user_job_server" = xyes],
+[ echo
+  echo "WARNING: Make job server requires a POSIX-ish system that"
+  echo "         supports the pipe(), sigaction(), and either"
+  echo "         waitpid() or wait3() functions.  Your system doesn't"
+  echo "         appear to provide one or more of those."
+  echo "         Disabling job server support."
+  echo
+])
+
+AS_IF([test "x$make_cv_load" = xno && test "x$user_load" = xyes],
+[ echo
+  echo "WARNING: 'load' support requires a POSIX-ish system that"
+  echo "         supports the dlopen(), dlsym(), and dlerror() functions."
+  echo "         Your system doesn't appear to provide one or more of these."
+  echo "         Disabling 'load' support."
+  echo
+])
+
+AS_IF([test "x$make_cv_posix_spawn" = xno && test "x$user_posix_spawn" = xyes],
+[ echo
+  echo "WARNING: posix_spawn() is not supported on this system."
+  echo
+])
+
+# autoconf initializes $prefix to NONE.
+AM_CONDITIONAL([KNOWN_PREFIX],
+               [test "x$prefix" = xNONE -o "x$prefix" = x/usr/local \
+                     -o "x$prefix" = x/usr/gnu -o "x$prefix" = x/usr])
+
+# Specify what files are to be created.
+AC_CONFIG_FILES([build.cfg tests/config-flags.pm \
+                 Makefile lib/Makefile doc/Makefile po/Makefile.in])
+# We don't need this: the standard automake output suffices for POSIX systems.
+#mk/Posix.mk
+
+# Put build.sh in the build directory so it's easy to find
+AC_CONFIG_LINKS([build.sh:build.sh])
+
+# OK, do it!
+
+AC_OUTPUT
+
+dnl Local Variables:
+dnl comment-start: "dnl "
+dnl comment-end: ""
+dnl comment-start-skip: "\\bdnl\\b\\s *"
+dnl compile-command: "make configure config.h.in"
+dnl End:

doc/.gitignore

@@ -0,0 +1,24 @@
+manual/
+make.t2d/
+make.t2p/
+gendocs_template
+fdl.texi
+make-stds.texi
+stamp-vti
+version.texi
+make.info*
+make*.html
+make.aux
+make.cp
+make.cps
+make.dvi
+make.fn
+make.fns
+make.ky
+make.log
+make.pdf
+make.pg
+make.ps
+make.toc
+make.tp
+make.vr

doc/Makefile.am

@@ -0,0 +1,24 @@
+# -*-Makefile-*-, or close enough
+# Copyright (C) 2000-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+TEXI2HTML = texi2html
+TEXI2HTML_FLAGS = -split_chapter
+
+info_TEXINFOS =	make.texi
+make_TEXINFOS = fdl.texi make-stds.texi
+
+CLEANFILES = make*.html

doc/make.1

@@ -0,0 +1,467 @@
+.TH MAKE 1 "26 May 2023" "GNU" "User Commands"
+.SH NAME
+make \- GNU Make utility to maintain groups of programs
+.SH SYNOPSIS
+.B make
+[\fIOPTION\fR]... [\fITARGET\fR]...
+.SH DESCRIPTION
+.LP
+The
+.I make
+utility will determine automatically which pieces of a large program need to
+be recompiled, and issue the commands to recompile them.  The manual describes
+the GNU implementation of
+.BR make ,
+which was written by Richard Stallman and Roland McGrath, and is currently
+maintained by Paul Smith.  Our examples show C programs, since they are very
+common, but you can use
+.B make
+with any programming language whose compiler can be run with a shell command.
+In fact,
+.B make
+is not limited to programs.  You can use it to describe any task where some
+files must be updated automatically from others whenever the others change.
+.LP
+To prepare to use
+.BR make ,
+you must write a file called the
+.I makefile
+that describes the relationships among files in your program, and provides
+commands for updating each file.  In a program, typically the executable file
+is updated from object files, which are in turn made by compiling source
+files.
+.LP
+Once a suitable makefile exists, each time you change some source files,
+this simple shell command:
+.sp 1
+.RS
+.B make
+.RE
+.sp 1
+suffices to perform all necessary recompilations.
+The
+.B make
+program uses the makefile description and the last-modification times of the
+files to decide which of the files need to be updated.  For each of those
+files, it issues the commands recorded in the makefile.
+.LP
+.B make
+executes commands in the
+.I makefile
+to update one or more
+.IR targets ,
+where
+.I target
+is typically a program.
+If no
+.B \-f
+option is present,
+.B make
+will look for the makefiles
+.IR GNUmakefile ,
+.IR makefile ,
+and
+.IR Makefile ,
+in that order.
+.LP
+Normally you should call your makefile either
+.I makefile
+or
+.IR Makefile .
+(We recommend
+.I Makefile
+because it appears prominently near the beginning of a directory
+listing, right near other important files such as
+.IR  README .)
+The first name checked,
+.IR GNUmakefile ,
+is not recommended for most makefiles.  You should use this name if you have a
+makefile that is specific to GNU Make, and will not be understood by other
+versions of
+.BR make .
+If
+.I makefile
+is '\-', the standard input is read.
+.LP
+.B make
+updates a target if it depends on prerequisite files
+that have been modified since the target was last modified,
+or if the target does not exist.
+.SH OPTIONS
+.sp 1
+.TP 0.5i
+\fB\-b\fR, \fB\-m\fR
+These options are ignored for compatibility with other versions of
+.BR make .
+.TP 0.5i
+\fB\-B\fR, \fB\-\-always\-make\fR
+Unconditionally make all targets.
+.TP 0.5i
+\fB\-C\fR \fIdir\fR, \fB\-\-directory\fR=\fIdir\fR
+Change to directory
+.I dir
+before reading the makefiles or doing anything else.
+If multiple
+.B \-C
+options are specified, each is interpreted relative to the
+previous one:
+.BR "\-C " /
+.BR "\-C " etc
+is equivalent to
+.BR "\-C " /etc.
+This is typically used with recursive invocations of
+.BR make .
+.TP 0.5i
+.B \-d
+Print debugging information in addition to normal processing.
+The debugging information says which files are being considered for
+remaking, which file-times are being compared and with what results,
+which files actually need to be remade, which implicit rules are
+considered and which are applied---everything interesting about how
+.B make
+decides what to do.
+.TP 0.5i
+.BI \-\-debug "[=FLAGS]"
+Print debugging information in addition to normal processing.
+If the
+.I FLAGS
+are omitted, then the behavior is the same as if
+.B \-d
+was specified.
+.I FLAGS
+may be any or all of the following names, comma- or space-separated.  Only the
+first character is significant: the rest may be omitted:
+.I all
+for all debugging output (same as using
+.BR \-d ),
+.I basic
+for basic debugging,
+.I verbose
+for more verbose basic debugging,
+.I implicit
+for showing implicit rule search operations,
+.I jobs
+for details on invocation of commands,
+.I makefile
+for debugging while remaking makefiles,
+.I print
+shows all recipes that are run even if they are silent, and
+.I why
+shows the reason
+.BR make
+decided to rebuild each target.  Use
+.I none
+to disable all previous debugging flags.
+.TP 0.5i
+\fB\-e\fR, \fB\-\-environment\-overrides\fR
+Give variables taken from the environment precedence over variables
+from makefiles.
+.TP 0.5i
+\fB\-E\fR \fIstring\fR, \fB\-\-eval\fR \fIstring\fR
+Interpret \fIstring\fR using the \fBeval\fR function, before parsing any
+makefiles.
+.TP 0.5i
+\fB\-f\fR \fIfile\fR, \fB\-\-file\fR=\fIfile\fR, \fB\-\-makefile\fR=\fIFILE\fR
+Use
+.I file
+as a makefile.
+.TP 0.5i
+\fB\-i\fR, \fB\-\-ignore\-errors\fR
+Ignore all errors in commands executed to remake files.
+.TP 0.5i
+\fB\-I\fR \fIdir\fR, \fB\-\-include\-dir\fR=\fIdir\fR
+Specifies a directory
+.I dir
+to search for included makefiles.
+If several
+.B \-I
+options are used to specify several directories, the directories are
+searched in the order specified.
+Unlike the arguments to other flags of
+.BR make ,
+directories given with
+.B \-I
+flags may come directly after the flag:
+.BI \-I dir
+is allowed, as well as
+.B \-I
+.IR dir .
+This syntax is allowed for compatibility with the C
+preprocessor's
+.B \-I
+flag.
+.TP 0.5i
+\fB\-j\fR [\fIjobs\fR], \fB\-\-jobs\fR[=\fIjobs\fR]
+Specifies the number of
+.I jobs
+(commands) to run simultaneously.
+If there is more than one
+.B \-j
+option, the last one is effective.
+If the
+.B \-j
+option is given without an argument,
+.BR make
+will not limit the number of jobs that can run simultaneously.
+.TP 0.5i
+\fB\--jobserver-style=\fR\fIstyle\fR
+The style of jobserver to use.  The
+.I style
+may be one of
+.BR fifo ,
+.BR pipe ,
+or
+.B sem
+(Windows only).
+.TP 0.5i
+\fB\-k\fR, \fB\-\-keep\-going\fR
+Continue as much as possible after an error.
+While the target that failed, and those that depend on it, cannot
+be remade, the other dependencies of these targets can be processed
+all the same.
+.TP 0.5i
+\fB\-l\fR [\fIload\fR], \fB\-\-load\-average\fR[=\fIload\fR]
+Specifies that no new jobs (commands) should be started if there are
+others jobs running and the load average is at least
+.I load
+(a floating-point number).
+With no argument, removes a previous load limit.
+.TP 0.5i
+\fB\-L\fR, \fB\-\-check\-symlink\-times\fR
+Use the latest mtime between symlinks and target.
+.TP 0.5i
+\fB\-n\fR, \fB\-\-just\-print\fR, \fB\-\-dry\-run\fR, \fB\-\-recon\fR
+Print the commands that would be executed, but do not execute them (except in
+certain circumstances).
+.TP 0.5i
+\fB\-o\fR \fIfile\fR, \fB\-\-old\-file\fR=\fIfile\fR, \fB\-\-assume\-old\fR=\fIfile\fR
+Do not remake the file
+.I file
+even if it is older than its dependencies, and do not remake anything
+on account of changes in
+.IR file .
+Essentially the file is treated as very old and its rules are ignored.
+.TP 0.5i
+\fB\-O\fR[\fItype\fR], \fB\-\-output\-sync\fR[=\fItype\fR]
+When running multiple jobs in parallel with \fB-j\fR, ensure the output of
+each job is collected together rather than interspersed with output from
+other jobs.  If
+.I type
+is not specified or is
+.B target
+the output from the entire recipe for each target is grouped together.  If
+.I type
+is
+.B line
+the output from each command line within a recipe is grouped together.
+If
+.I type
+is
+.B recurse
+output from an entire recursive make is grouped together.  If
+.I type
+is
+.B none
+output synchronization is disabled.
+.TP 0.5i
+\fB\-p\fR, \fB\-\-print\-data\-base\fR
+Print the data base (rules and variable values) that results from
+reading the makefiles; then execute as usual or as otherwise
+specified.
+This also prints the version information given by the
+.B \-v
+switch (see below).  To print the built-in data base only, use
+.IR "make \-p \-f/dev/null" .
+.TP 0.5i
+\fB\-\-print\-targets\fR
+Print each target defined as a result of reading the makefiles, one target per
+line, then exit with success.  Implicit rule targets are not printed, nor are
+special targets (target names that consist of "." followed by all upper-case
+letters).  No recipe commands are invoked and no makefiles are rebuilt.
+.TP 0.5i
+\fB\-q\fR, \fB\-\-question\fR
+``Question mode''.
+Do not run any commands, or print anything; just return an exit status
+that is zero if the specified targets are already up to date, nonzero
+otherwise.
+.TP 0.5i
+\fB\-r\fR, \fB\-\-no\-builtin\-rules\fR
+Eliminate use of the built\-in implicit rules.
+Also clear out the default list of suffixes for suffix rules.
+.TP 0.5i
+\fB\-R\fR, \fB\-\-no\-builtin\-variables\fR
+Don't define any built\-in variables.
+.TP 0.5i
+\fB\-s\fR, \fB\-\-silent\fR, \fB\-\-quiet\fR
+Silent operation; do not print the commands as they are executed.
+.TP 0.5i
+.B \-\-no\-silent
+Cancel the effect of the \fB\-s\fR option.
+.TP 0.5i
+\fB\-S\fR, \fB\-\-no\-keep\-going\fR, \fB\-\-stop\fR
+Cancel the effect of the
+.B \-k
+option.
+.TP 0.5i
+\fB\-t\fR, \fB\-\-touch\fR
+Touch files (mark them up to date without really changing them)
+instead of running their commands.
+This is used to pretend that the commands were done, in order to fool
+future invocations of
+.BR make .
+.TP 0.5i
+.B \-\-trace
+Information about the disposition of each target is printed (why the target is
+being rebuilt and what commands are run to rebuild it).
+.TP 0.5i
+\fB\-v\fR, \fB\-\-version\fR
+Print the version of the
+.B make
+program plus a copyright, a list of authors and a notice that there
+is no warranty.
+.TP 0.5i
+\fB\-w\fR, \fB\-\-print\-directory\fR
+Print a message containing the working directory
+before and after other processing.
+This may be useful for tracking down errors from complicated nests of
+recursive
+.B make
+commands.
+.TP 0.5i
+.B \-\-no\-print\-directory
+Turn off
+.BR \-w ,
+even if it was turned on implicitly.
+.TP 0.5i
+.BI \-\-shuffle "[=MODE]"
+Enable shuffling of goal and prerequisite ordering.
+.I MODE
+is one of
+.I none
+to disable shuffle mode,
+.I random
+to shuffle prerequisites in random order,
+.I reverse
+to consider prerequisites in reverse order, or an integer
+.I <seed>
+which enables
+.I random
+mode with a specific
+.I seed
+value.  If
+.I MODE
+is omitted the default is
+.IR random .
+.TP 0.5i
+\fB\-W\fR \fIfile\fR, \fB\-\-what\-if\fR=\fIfile\fR, \fB\-\-new\-file\fR=\fIfile\fR, \fB\-\-assume\-new\fR=\fIfile\fR
+Pretend that the target
+.I file
+has just been modified.
+When used with the
+.B \-n
+flag, this shows you what would happen if you were to modify that file.
+Without
+.BR \-n ,
+it is almost the same as running a
+.I touch
+command on the given file before running
+.BR make ,
+except that the modification time is changed only in the imagination of
+.BR make .
+.TP 0.5i
+\fB\-\-warn\fR[=\fIARG[\fR,\fIARG\fR]]
+Control warning reporting for makefiles.  This option can appear multiple times.
+In case of conflicts, later settings override earlier settings.
+.I ARG
+can be an action; one of
+.IR ignore ,
+.IR warn ,
+or
+.I error
+to set the default action for all warnings, or it can be a specific warning:
+.I circular-dep
+(finding a circular dependency),
+.I invalid-ref
+(referencing an invalid variable name),
+.I invalid-var
+(assigning to an invalid variable name),
+or
+.I undefined-var
+(referencing an undefined variable).  The behavior of each warning can be set
+by adding
+.BI : action
+after the warning name.  If an action is not specified the default is
+.IR warn .
+If no
+.I ARG
+is provided the action for all warnings is
+.IR warn .
+If no
+.B \-\-warn
+option is provided the default action for
+.I invalid-var
+and
+.I invalid-ref
+is
+.I warn
+and the default action for
+.I undefined-var
+is
+.IR ignore .
+.TP 0.5i
+.B \-\-warn\-undefined\-variables
+A deprecated alternative for
+.BR \-\-warn=undefined-var .
+.TP 0.5i
+.B \-
+This option alone (not as an argument to the
+.B \-f
+option) is ignored, unless a target named
+.B \-
+is defined in the makefile, in which case that target is added to the makefile
+goals.
+.SH "EXIT STATUS"
+GNU Make exits with a status of zero if all makefiles were successfully parsed
+and no targets that were built failed.  A status of one will be returned
+if the
+.B \-q
+flag was used and
+.B make
+determines that a target needs to be rebuilt.  A status of two will be
+returned if any errors were encountered.
+.SH "SEE ALSO"
+The full documentation for
+.B make
+is maintained as a Texinfo manual.  If the
+.B info
+and
+.B make
+programs are properly installed at your site, the command
+.IP
+.B info make
+.PP
+should give you access to the complete manual.
+.SH BUGS
+See the chapter ``Problems and Bugs'' in
+.IR "The GNU Make Manual" .
+.SH AUTHOR
+This manual page contributed by Dennis Morse of Stanford University.
+Further updates contributed by Mike Frysinger.  It has been reworked by Roland
+McGrath.  Maintained by Paul Smith.
+.SH "COPYRIGHT"
+Copyright \(co 1992\(en1993, 1996\(en2024 Free Software Foundation, Inc.
+This file is part of
+.IR "GNU Make" .
+.LP
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+.LP
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+.LP
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see
+.IR https://www.gnu.org/licenses/ .

gl/.gitignore

@@ -0,0 +1,10 @@
+*~
+#*
+.#*
+.*cache
+*.diff
+*.patch
+*.orig
+*.rej
+*.out
+*.log

gl/README

@@ -0,0 +1,65 @@
+04 July 2022                                                         -*-text-*-
+
+The gnulib project provides a fantastic array of modules that can support both
+POSIX and also extended features for GNU software.
+
+Unfortunately using it in GNU make is problematic: GNU make is a foundational
+utility (if you don't have a "make" program you pretty much can't build any
+software), one of our goals in GNU make is to provide scripts (e.g.,
+"build.sh") that will build GNU make without needing an instance of make.
+
+Instead of running "./configure && make", you should be able to run
+"./configure && ./build.sh" and get a build of GNU make as a result.
+
+However, more and more gnulib modules are relying not on M4 macros and
+the configure script to manage their configuration, but in addition special
+makefile recipes that perform various post-configure operations.  Since we
+don't have an instance of "make", we cannot use these modules as-is.
+
+There are various options we could choose for solving this:
+
+- Avoid gnulib modules and write our own portability interfaces.
+  I really am not too excited about this.
+
+- Give up on "build.sh" and require users to already have "make".
+  The argument here is that you must already have a compiler, and it couldn't
+  have been built without "make", and/or if you build it with a cross-compiler
+  then you should be able to use that cross-development environment to build
+  GNU make as well.
+
+- Provide a "mini-make" with just enough functionality to support the gnulib
+  makefiles but no extra features, that didn't need any complex gnulib
+  modules.  As with the first option, I'm not too excited about this.
+
+Although arguably the second option is the sane one, I'm not really excited
+about any of them for the time being.  So I elected to try something between
+the first and second options:
+
+The gnulib-port Git branch will contain unmodified copies of gnulib modules
+that we want to use with GNU make.  From there, we merge them into the main
+Git branch then modify / simplify them to avoid unnecessary extra modules and
+allow "build.sh" to be used.
+
+By keeping the unmodified versions on the gnulib-port branch, we enable Git
+merge facilities to merge in new versions as follows:
+
+* Check out the gnulib-port branch
+
+* Update its content with any updates to gnulib modules.  Something like:
+  (
+    cd gl \
+      && find */. -type f \
+        | while read fn; do
+            test -f "$GNULIB_SRCDIR/$fn" && cp "$GNULIB_SRCDIR/$fn" "$fn"
+          done
+  )
+
+* Commit the changes _without modification_
+
+* Check out the main branch
+
+* Run "git merge --no-ff gnulib-port" to merge in the changes
+
+* Resolve any conflicts and commit the merge.
+
+-- pds

gl/lib/fnmatch.c

@@ -0,0 +1,459 @@
+/* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999, 2023 Free Software
+Foundation, Inc.
+This file is part of the GNU C Library.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.
+If not, see <https://www.gnu.org/licenses/>.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Enable GNU extensions in fnmatch.h.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#include <errno.h>
+#include <fnmatch.h>
+#include <ctype.h>
+
+#if HAVE_STRING_H || defined _LIBC
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+
+#if defined STDC_HEADERS || defined _LIBC
+# include <stdlib.h>
+#endif
+
+/* For platform which support the ISO C amendement 1 functionality we
+   support user defined character classes.  */
+#if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.  */
+# include <wchar.h>
+# include <wctype.h>
+#endif
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#if defined _LIBC || !defined __GNU_LIBRARY__
+
+
+# if defined STDC_HEADERS || !defined isascii
+#  define ISASCII(c) 1
+# else
+#  define ISASCII(c) isascii(c)
+# endif
+
+# ifdef isblank
+#  define ISBLANK(c) (ISASCII (c) && isblank (c))
+# else
+#  define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+# endif
+# ifdef isgraph
+#  define ISGRAPH(c) (ISASCII (c) && isgraph (c))
+# else
+#  define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
+# endif
+
+# define ISPRINT(c) (ISASCII (c) && isprint (c))
+# define ISDIGIT(c) (ISASCII (c) && isdigit (c))
+# define ISALNUM(c) (ISASCII (c) && isalnum (c))
+# define ISALPHA(c) (ISASCII (c) && isalpha (c))
+# define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
+# define ISLOWER(c) (ISASCII (c) && islower (c))
+# define ISPUNCT(c) (ISASCII (c) && ispunct (c))
+# define ISSPACE(c) (ISASCII (c) && isspace (c))
+# define ISUPPER(c) (ISASCII (c) && isupper (c))
+# define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
+
+# define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
+
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+/* The GNU C library provides support for user-defined character classes
+   and the functions from ISO C amendement 1.  */
+#  ifdef CHARCLASS_NAME_MAX
+#   define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
+#  else
+/* This shouldn't happen but some implementation might still have this
+   problem.  Use a reasonable default value.  */
+#   define CHAR_CLASS_MAX_LENGTH 256
+#  endif
+
+#  ifdef _LIBC
+#   define IS_CHAR_CLASS(string) __wctype (string)
+#  else
+#   define IS_CHAR_CLASS(string) wctype (string)
+#  endif
+# else
+#  define CHAR_CLASS_MAX_LENGTH  6 /* Namely, `xdigit'.  */
+
+#  define IS_CHAR_CLASS(string)						      \
+   (STREQ (string, "alpha") || STREQ (string, "upper")			      \
+    || STREQ (string, "lower") || STREQ (string, "digit")		      \
+    || STREQ (string, "alnum") || STREQ (string, "xdigit")		      \
+    || STREQ (string, "space") || STREQ (string, "print")		      \
+    || STREQ (string, "punct") || STREQ (string, "graph")		      \
+    || STREQ (string, "cntrl") || STREQ (string, "blank"))
+# endif
+
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+
+# if !defined _LIBC && !defined getenv
+extern char *getenv ();
+# endif
+
+# ifndef errno
+extern int errno;
+# endif
+
+/* Match STRING against the filename pattern PATTERN, returning zero if
+   it matches, nonzero if not.  */
+static int
+internal_fnmatch (const char *pattern, const char *string,
+		  int no_leading_period, int flags)
+{
+  const char *p = pattern, *n = string;
+  unsigned char c;
+
+/* Note that this evaluates C many times.  */
+# ifdef _LIBC
+#  define FOLD(c) (unsigned char)((flags & FNM_CASEFOLD) ? tolower (c) : (c))
+# else
+#  define FOLD(c) (unsigned char)((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
+# endif
+
+  while ((c = *p++) != '\0')
+    {
+      c = FOLD (c);
+
+      switch (c)
+	{
+	case '?':
+	  if (*n == '\0')
+	    return FNM_NOMATCH;
+	  else if (*n == '/' && (flags & FNM_FILE_NAME))
+	    return FNM_NOMATCH;
+	  else if (*n == '.' && no_leading_period
+		   && (n == string
+		       || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
+	    return FNM_NOMATCH;
+	  break;
+
+	case '\\':
+	  if (!(flags & FNM_NOESCAPE))
+	    {
+	      c = *p++;
+	      if (c == '\0')
+		/* Trailing \ loses.  */
+		return FNM_NOMATCH;
+	      c = FOLD (c);
+	    }
+	  if (FOLD ((unsigned char) *n) != c)
+	    return FNM_NOMATCH;
+	  break;
+
+	case '*':
+	  if (*n == '.' && no_leading_period
+	      && (n == string
+		  || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
+	    return FNM_NOMATCH;
+
+	  for (c = *p++; c == '?' || c == '*'; c = *p++)
+	    {
+	      if (*n == '/' && (flags & FNM_FILE_NAME))
+		/* A slash does not match a wildcard under FNM_FILE_NAME.  */
+		return FNM_NOMATCH;
+	      else if (c == '?')
+		{
+		  /* A ? needs to match one character.  */
+		  if (*n == '\0')
+		    /* There isn't another character; no match.  */
+		    return FNM_NOMATCH;
+		  else
+		    /* One character of the string is consumed in matching
+		       this ? wildcard, so *??? won't match if there are
+		       less than three characters.  */
+		    ++n;
+		}
+	    }
+
+	  if (c == '\0')
+	    /* The wildcard(s) is/are the last element of the pattern.
+	       If the name is a file name and contains another slash
+	       this does mean it cannot match.  */
+	    return ((flags & FNM_FILE_NAME) && strchr (n, '/') != NULL
+		    ? FNM_NOMATCH : 0);
+	  else
+	    {
+	      const char *endp;
+
+	      endp = strchr (n, (flags & FNM_FILE_NAME) ? '/' : '\0');
+	      if (endp == NULL)
+		endp = n + strlen (n);
+
+	      if (c == '[')
+		{
+		  int flags2 = ((flags & FNM_FILE_NAME)
+				? flags : (flags & ~FNM_PERIOD));
+
+		  for (--p; n < endp; ++n)
+		    if (internal_fnmatch (p, n,
+					  (no_leading_period
+					   && (n == string
+					       || (n[-1] == '/'
+						   && (flags
+						       & FNM_FILE_NAME)))),
+					  flags2)
+			== 0)
+		      return 0;
+		}
+	      else if (c == '/' && (flags & FNM_FILE_NAME))
+		{
+		  while (*n != '\0' && *n != '/')
+		    ++n;
+		  if (*n == '/'
+		      && (internal_fnmatch (p, n + 1, flags & FNM_PERIOD,
+					    flags) == 0))
+		    return 0;
+		}
+	      else
+		{
+		  int flags2 = ((flags & FNM_FILE_NAME)
+				? flags : (flags & ~FNM_PERIOD));
+
+		  if (c == '\\' && !(flags & FNM_NOESCAPE))
+		    c = *p;
+		  c = FOLD (c);
+		  for (--p; n < endp; ++n)
+		    if (FOLD ((unsigned char) *n) == c
+			&& (internal_fnmatch (p, n,
+					      (no_leading_period
+					       && (n == string
+						   || (n[-1] == '/'
+						       && (flags
+							   & FNM_FILE_NAME)))),
+					      flags2) == 0))
+		      return 0;
+		}
+	    }
+
+	  /* If we come here no match is possible with the wildcard.  */
+	  return FNM_NOMATCH;
+
+	case '[':
+	  {
+	    /* Nonzero if the sense of the character class is inverted.  */
+	    static int posixly_correct;
+	    int not;
+	    char cold;
+
+	    if (posixly_correct == 0)
+	      posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
+
+	    if (*n == '\0')
+	      return FNM_NOMATCH;
+
+	    if (*n == '.' && no_leading_period && (n == string
+						   || (n[-1] == '/'
+						       && (flags
+							   & FNM_FILE_NAME))))
+	      return FNM_NOMATCH;
+
+	    if (*n == '/' && (flags & FNM_FILE_NAME))
+	      /* `/' cannot be matched.  */
+	      return FNM_NOMATCH;
+
+	    not = (*p == '!' || (posixly_correct < 0 && *p == '^'));
+	    if (not)
+	      ++p;
+
+	    c = *p++;
+	    for (;;)
+	      {
+		unsigned char fn = FOLD ((unsigned char) *n);
+
+		if (!(flags & FNM_NOESCAPE) && c == '\\')
+		  {
+		    if (*p == '\0')
+		      return FNM_NOMATCH;
+		    c = FOLD ((unsigned char) *p);
+		    ++p;
+
+		    if (c == fn)
+		      goto matched;
+		  }
+		else if (c == '[' && *p == ':')
+		  {
+		    /* Leave room for the null.  */
+		    char str[CHAR_CLASS_MAX_LENGTH + 1];
+		    size_t c1 = 0;
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+		    wctype_t wt;
+# endif
+		    const char *startp = p;
+
+		    for (;;)
+		      {
+			if (c1 == CHAR_CLASS_MAX_LENGTH)
+			  /* The name is too long and therefore the pattern
+			     is ill-formed.  */
+			  return FNM_NOMATCH;
+
+			c = *++p;
+			if (c == ':' && p[1] == ']')
+			  {
+			    p += 2;
+			    break;
+			  }
+			if (c < 'a' || c >= 'z')
+			  {
+			    /* This cannot possibly be a character class name.
+			       Match it as a normal range.  */
+			    p = startp;
+			    c = '[';
+			    goto normal_bracket;
+			  }
+			str[c1++] = c;
+		      }
+		    str[c1] = '\0';
+
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+		    wt = IS_CHAR_CLASS (str);
+		    if (wt == 0)
+		      /* Invalid character class name.  */
+		      return FNM_NOMATCH;
+
+		    if (__iswctype (__btowc ((unsigned char) *n), wt))
+		      goto matched;
+# else
+		    if ((STREQ (str, "alnum") && ISALNUM ((unsigned char) *n))
+			|| (STREQ (str, "alpha") && ISALPHA ((unsigned char) *n))
+			|| (STREQ (str, "blank") && ISBLANK ((unsigned char) *n))
+			|| (STREQ (str, "cntrl") && ISCNTRL ((unsigned char) *n))
+			|| (STREQ (str, "digit") && ISDIGIT ((unsigned char) *n))
+			|| (STREQ (str, "graph") && ISGRAPH ((unsigned char) *n))
+			|| (STREQ (str, "lower") && ISLOWER ((unsigned char) *n))
+			|| (STREQ (str, "print") && ISPRINT ((unsigned char) *n))
+			|| (STREQ (str, "punct") && ISPUNCT ((unsigned char) *n))
+			|| (STREQ (str, "space") && ISSPACE ((unsigned char) *n))
+			|| (STREQ (str, "upper") && ISUPPER ((unsigned char) *n))
+			|| (STREQ (str, "xdigit") && ISXDIGIT ((unsigned char) *n)))
+		      goto matched;
+# endif
+		  }
+		else if (c == '\0')
+		  /* [ (unterminated) loses.  */
+		  return FNM_NOMATCH;
+		else
+		  {
+		  normal_bracket:
+		    if (FOLD (c) == fn)
+		      goto matched;
+
+		    cold = c;
+		    c = *p++;
+
+		    if (c == '-' && *p != ']')
+		      {
+			/* It is a range.  */
+			unsigned char cend = *p++;
+			if (!(flags & FNM_NOESCAPE) && cend == '\\')
+			  cend = *p++;
+			if (cend == '\0')
+			  return FNM_NOMATCH;
+
+			if (cold <= fn && fn <= FOLD (cend))
+			  goto matched;
+
+			c = *p++;
+		      }
+		  }
+
+		if (c == ']')
+		  break;
+	      }
+
+	    if (!not)
+	      return FNM_NOMATCH;
+	    break;
+
+	  matched:
+	    /* Skip the rest of the [...] that already matched.  */
+	    while (c != ']')
+	      {
+		if (c == '\0')
+		  /* [... (unterminated) loses.  */
+		  return FNM_NOMATCH;
+
+		c = *p++;
+		if (!(flags & FNM_NOESCAPE) && c == '\\')
+		  {
+		    if (*p == '\0')
+		      return FNM_NOMATCH;
+		    /* XXX 1003.2d11 is unclear if this is right.  */
+		    ++p;
+		  }
+		else if (c == '[' && *p == ':')
+		  {
+		    do
+		      if (*++p == '\0')
+			return FNM_NOMATCH;
+		    while (*p != ':' || p[1] == ']');
+		    p += 2;
+		    c = *p;
+		  }
+	      }
+	    if (not)
+	      return FNM_NOMATCH;
+	  }
+	  break;
+
+	default:
+	  if (c != FOLD ((unsigned char) *n))
+	    return FNM_NOMATCH;
+	}
+
+      ++n;
+    }
+
+  if (*n == '\0')
+    return 0;
+
+  if ((flags & FNM_LEADING_DIR) && *n == '/')
+    /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz".  */
+    return 0;
+
+  return FNM_NOMATCH;
+
+# undef FOLD
+}
+
+
+int
+fnmatch (const char *pattern, const char *string, int flags)
+{
+  return internal_fnmatch (pattern, string, flags & FNM_PERIOD, flags);
+}
+
+#endif	/* _LIBC or not __GNU_LIBRARY__.  */

gl/lib/fnmatch.in.h

@@ -0,0 +1,62 @@
+/* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999, 2023 Free Software
+Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.
+If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef	_FNMATCH_H
+#define	_FNMATCH_H	1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* We #undef these before defining them because some losing systems
+   (HP-UX A.08.07 for example) define these in <unistd.h>.  */
+#undef	FNM_PATHNAME
+#undef	FNM_NOESCAPE
+#undef	FNM_PERIOD
+
+/* Bits set in the FLAGS argument to `fnmatch'.  */
+#define	FNM_PATHNAME	(1 << 0) /* No wildcard can ever match `/'.  */
+#define	FNM_NOESCAPE	(1 << 1) /* Backslashes don't quote special chars.  */
+#define	FNM_PERIOD	(1 << 2) /* Leading `.' is matched only explicitly.  */
+
+#if !defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _GNU_SOURCE
+# define FNM_FILE_NAME	 FNM_PATHNAME	/* Preferred GNU name.  */
+# define FNM_LEADING_DIR (1 << 3)	/* Ignore `/...' after a match.  */
+# define FNM_CASEFOLD	 (1 << 4)	/* Compare without regard to case.  */
+#endif
+
+/* Value returned by `fnmatch' if STRING does not match PATTERN.  */
+#define	FNM_NOMATCH	1
+
+/* This value is returned if the implementation does not support
+   `fnmatch'.  Since this is not the case here it will never be
+   returned but the conformance test suites still require the symbol
+   to be defined.  */
+#ifdef _XOPEN_SOURCE
+# define FNM_NOSYS	(-1)
+#endif
+
+/* Match NAME against the filename pattern PATTERN,
+   returning zero if it matches, FNM_NOMATCH if not.  */
+extern int fnmatch (const char *pattern, const char *name, int flags);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* fnmatch.h */

gl/lib/glob.in.h

@@ -0,0 +1,161 @@
+/* Copyright (C) 1991, 1992, 1995, 1996, 1997, 1998, 2023 Free Software
+Foundation, Inc.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.
+If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef	_GLOB_H
+#define	_GLOB_H	1
+
+#include <stddef.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* Bits set in the FLAGS argument to `glob'.  */
+#define	GLOB_ERR	(1 << 0)/* Return on read errors.  */
+#define	GLOB_MARK	(1 << 1)/* Append a slash to each name.  */
+#define	GLOB_NOSORT	(1 << 2)/* Don't sort the names.  */
+#define	GLOB_DOOFFS	(1 << 3)/* Insert PGLOB->gl_offs NULLs.  */
+#define	GLOB_NOCHECK	(1 << 4)/* If nothing matches, return the pattern.  */
+#define	GLOB_APPEND	(1 << 5)/* Append to results of a previous call.  */
+#define	GLOB_NOESCAPE	(1 << 6)/* Backslashes don't quote metacharacters.  */
+#define	GLOB_PERIOD	(1 << 7)/* Leading `.' can be matched by metachars.  */
+
+#if (!defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _BSD_SOURCE \
+     || defined _GNU_SOURCE)
+# define GLOB_MAGCHAR	 (1 << 8)/* Set in gl_flags if any metachars seen.  */
+# define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions.  */
+# define GLOB_BRACE	 (1 << 10)/* Expand "{a,b}" to "a" "b".  */
+# define GLOB_NOMAGIC	 (1 << 11)/* If no magic chars, return the pattern.  */
+# define GLOB_TILDE	 (1 << 12)/* Expand ~user and ~ to home directories. */
+# define GLOB_ONLYDIR	 (1 << 13)/* Match only directories.  */
+# define GLOB_TILDE_CHECK (1 << 14)/* Like GLOB_TILDE but return an error
+				      if the user name is not available.  */
+# define __GLOB_FLAGS	(GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
+			 GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND|     \
+			 GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE|     \
+			 GLOB_NOMAGIC|GLOB_TILDE|GLOB_ONLYDIR|GLOB_TILDE_CHECK)
+#else
+# define __GLOB_FLAGS	(GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
+			 GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND|     \
+			 GLOB_PERIOD)
+#endif
+
+/* Error returns from `glob'.  */
+#define	GLOB_NOSPACE	1	/* Ran out of memory.  */
+#define	GLOB_ABORTED	2	/* Read error.  */
+#define	GLOB_NOMATCH	3	/* No matches found.  */
+#define GLOB_NOSYS	4	/* Not implemented.  */
+#ifdef _GNU_SOURCE
+/* Previous versions of this file defined GLOB_ABEND instead of
+   GLOB_ABORTED.  Provide a compatibility definition here.  */
+# define GLOB_ABEND GLOB_ABORTED
+#endif
+
+/* Structure describing a globbing run.  */
+#if !defined _AMIGA && !MK_OS_VMS /* Buggy compiler.   */
+struct stat;
+#endif
+typedef struct
+  {
+    size_t gl_pathc;		/* Count of paths matched by the pattern.  */
+    char **gl_pathv;		/* List of matched pathnames.  */
+    size_t gl_offs;		/* Slots to reserve in `gl_pathv'.  */
+    int gl_flags;		/* Set to FLAGS, maybe | GLOB_MAGCHAR.  */
+
+    /* If the GLOB_ALTDIRFUNC flag is set, the following functions
+       are used instead of the normal file access functions.  */
+    void (*gl_closedir) (void *);
+    struct dirent *(*gl_readdir) (void *);
+    void * (*gl_opendir) (const char *);
+    int (*gl_lstat) (const char *, struct stat *);
+#if MK_OS_VMS && defined(__DECC) && !defined(_POSIX_C_SOURCE)
+    int (*gl_stat) (const char *, struct stat *, ...);
+#else
+    int (*gl_stat) (const char *, struct stat *);
+#endif
+  } glob_t;
+
+#ifdef _LARGEFILE64_SOURCE
+struct stat64;
+typedef struct
+  {
+    size_t gl_pathc;
+    char **gl_pathv;
+    size_t gl_offs;
+    int gl_flags;
+
+    /* If the GLOB_ALTDIRFUNC flag is set, the following functions
+       are used instead of the normal file access functions.  */
+    void (*gl_closedir) (void *);
+    struct dirent64 *(*gl_readdir) (void *);
+    void * (*gl_opendir) (const char *);
+    int (*gl_lstat) (const char *, struct stat64 *);
+    int (*gl_stat) (const char *, struct stat64 *);
+  } glob64_t;
+#endif
+
+#if _FILE_OFFSET_BITS == 64 && __GNUC__ < 2
+# define glob glob64
+# define globfree globfree64
+#else
+# ifdef _LARGEFILE64_SOURCE
+extern int glob64 (const char *pattern, int flags,
+		   int (*errfunc) (const char *, int),
+		   glob64_t *pglob);
+
+extern void globfree64 (glob64_t *pglob);
+# endif
+#endif
+
+/* Do glob searching for PATTERN, placing results in PGLOB.
+   The bits defined above may be set in FLAGS.
+   If a directory cannot be opened or read and ERRFUNC is not nil,
+   it is called with the pathname that caused the error, and the
+   `errno' value from the failing call; if it returns non-zero
+   `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
+   If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
+   Otherwise, `glob' returns zero.  */
+#if _FILE_OFFSET_BITS != 64 || __GNUC__ < 2
+extern int glob (const char *pattern, int flags,
+		 int (*errfunc) (const char *, int),
+		 glob_t *pglob);
+
+/* Free storage allocated in PGLOB by a previous `glob' call.  */
+extern void globfree (glob_t *pglob);
+#else
+extern int glob (const char *pattern, int flags,
+		 int (*errfunc) (const char *, int),
+		 glob_t *pglob) __asm__ ("glob64");
+
+extern void globfree (glob_t *pglob) __asm__ ("globfree64");
+#endif
+
+
+#ifdef _GNU_SOURCE
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.
+
+   This function is not part of the interface specified by POSIX.2
+   but several programs want to use it.  */
+extern int glob_pattern_p (const char *pattern, int quote);
+#endif
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* glob.h  */

gl/m4/acinclude.m4

@@ -0,0 +1,132 @@
+dnl acinclude.m4 -- Extra macros needed for GNU Make.
+dnl
+dnl Automake will incorporate this into its generated aclocal.m4.
+dnl Copyright (C) 1998-2024 Free Software Foundation, Inc.
+dnl This file is part of GNU Make.
+dnl
+dnl GNU Make is free software; you can redistribute it and/or modify it under
+dnl the terms of the GNU General Public License as published by the Free
+dnl Software Foundation; either version 3 of the License, or (at your option)
+dnl any later version.
+dnl
+dnl GNU Make is distributed in the hope that it will be useful, but WITHOUT
+dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+dnl FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+dnl more details.
+dnl
+dnl You should have received a copy of the GNU General Public License along
+dnl with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+dnl ---------------------------------------------------------------------------
+dnl Got this from the lynx 2.8 distribution.
+dnl by T.E.Dickey <dickey@clark.net>
+dnl and Jim Spath <jspath@mail.bcpl.lib.md.us>
+dnl and Philippe De Muyter <phdm@macqel.be>
+dnl
+dnl Created: 1997/1/28
+dnl Updated: 1997/12/23
+dnl ---------------------------------------------------------------------------
+dnl After checking for functions in the default $LIBS, make a further check
+dnl for the functions that are netlib-related (these aren't always in the
+dnl libc, etc., and have to be handled specially because there are conflicting
+dnl and broken implementations.
+dnl Common library requirements (in order):
+dnl	-lresolv -lsocket -lnsl
+dnl	-lnsl -lsocket
+dnl	-lsocket
+dnl	-lbsd
+AC_DEFUN([CF_NETLIBS],[
+cf_test_netlibs=no
+AC_MSG_CHECKING(for network libraries)
+AC_CACHE_VAL(cf_cv_netlibs,[
+AC_MSG_RESULT(working...)
+cf_cv_netlibs=""
+cf_test_netlibs=yes
+AC_CHECK_FUNCS(gethostname,,[
+        CF_RECHECK_FUNC(gethostname,nsl,cf_cv_netlibs,[
+                CF_RECHECK_FUNC(gethostname,socket,cf_cv_netlibs)])])
+#
+# FIXME:  sequent needs this library (i.e., -lsocket -linet -lnsl), but
+# I don't know the entrypoints - 97/7/22 TD
+AC_CHECK_LIB(inet,main,cf_cv_netlibs="-linet $cf_cv_netlibs")
+#
+if test "$ac_cv_func_lsocket" != no ; then
+AC_CHECK_FUNCS(socket,,[
+        CF_RECHECK_FUNC(socket,socket,cf_cv_netlibs,[
+                CF_RECHECK_FUNC(socket,bsd,cf_cv_netlibs)])])
+fi
+#
+AC_CHECK_FUNCS(gethostbyname,,[
+        CF_RECHECK_FUNC(gethostbyname,nsl,cf_cv_netlibs)])
+])
+LIBS="$LIBS $cf_cv_netlibs"
+test $cf_test_netlibs = no && echo "$cf_cv_netlibs" >&AC_FD_MSG
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl Re-check on a function to see if we can pick it up by adding a library.
+dnl	$1 = function to check
+dnl	$2 = library to check in
+dnl	$3 = environment to update (e.g., $LIBS)
+dnl	$4 = what to do if this fails
+dnl
+dnl This uses 'unset' if the shell happens to support it, but leaves the
+dnl configuration variable set to 'unknown' if not.  This is a little better
+dnl than the normal autoconf test, which gives misleading results if a test
+dnl for the function is made (e.g., with AC_CHECK_FUNC) after this macro is
+dnl used (autoconf does not distinguish between a null token and one that is
+dnl set to 'no').
+AC_DEFUN([CF_RECHECK_FUNC],[
+AC_CHECK_LIB($2,$1,[
+        CF_UPPER(cf_tr_func,$1)
+        AC_DEFINE_UNQUOTED(HAVE_$cf_tr_func,1,[Define if you have function $1])
+        ac_cv_func_$1=yes
+        $3="-l$2 [$]$3"],[
+        ac_cv_func_$1=unknown
+        unset ac_cv_func_$1 2>/dev/null
+        $4],
+        [[$]$3])
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl Make an uppercase version of a variable
+dnl $1=uppercase($2)
+AC_DEFUN([CF_UPPER],
+[
+changequote(,)dnl
+$1=`echo $2 | tr '[a-z]' '[A-Z]'`
+changequote([,])dnl
+])dnl
+
+
+dnl ---------------------------------------------------------------------------
+dnl From Paul Eggert <eggert@twinsun.com>
+dnl Update for Darwin by Troy Runkel <Troy.Runkel@mathworks.com>
+dnl Update for AIX by Olexiy Buyanskyy (Savannah bug 32485)
+
+AC_DEFUN([AC_STRUCT_ST_MTIM_NSEC],
+ [AC_CACHE_CHECK([for nanoseconds field of struct stat],
+   ac_cv_struct_st_mtim_nsec,
+   [ac_save_CPPFLAGS="$CPPFLAGS"
+    ac_cv_struct_st_mtim_nsec=no
+    # st_mtim.tv_nsec -- the usual case
+    # st_mtim._tv_nsec -- Solaris 2.6, if
+    #	(defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1
+    #	 && !defined __EXTENSIONS__)
+    # st_mtim.st__tim.tv_nsec -- UnixWare 2.1.2
+    # st_mtime_n -- AIX 5.2 and above
+    # st_mtimespec.tv_nsec -- Darwin (Mac OSX)
+    for ac_val in st_mtim.tv_nsec st_mtim._tv_nsec st_mtim.st__tim.tv_nsec st_mtime_n st_mtimespec.tv_nsec; do
+      CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val"
+      AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/stat.h>
+        ], [struct stat s; s.ST_MTIM_NSEC;],
+        [ac_cv_struct_st_mtim_nsec=$ac_val; break])
+    done
+    CPPFLAGS="$ac_save_CPPFLAGS"
+   ])
+
+  if test $ac_cv_struct_st_mtim_nsec != no; then
+    AC_DEFINE_UNQUOTED([ST_MTIM_NSEC], [$ac_cv_struct_st_mtim_nsec],
+        [Define if struct stat contains a nanoseconds field])
+  fi
+ ]
+)

gl/m4/dospaths.m4

@@ -0,0 +1,33 @@
+# Test if the system uses DOS-style pathnames (drive specs and backslashes)
+# By Paul Smith <psmith@gnu.org>.  Based on dos.m4 by Jim Meyering.
+#
+# Copyright (C) 1993-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+AC_DEFUN([pds_AC_DOS_PATHS], [
+  AC_CACHE_CHECK([whether system uses MSDOS-style paths], [ac_cv_dos_paths], [
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if !defined _WIN32 && !defined __WIN32__ && !defined __MSDOS__ && !defined __EMX__ && !defined __MSYS__ && !defined __CYGWIN__
+neither MSDOS nor Windows nor OS2
+#endif
+]])],
+        [ac_cv_dos_paths=yes],
+        [ac_cv_dos_paths=no])])
+
+  AS_IF([test x"$ac_cv_dos_paths" = xyes],
+  [ AC_DEFINE_UNQUOTED([HAVE_DOS_PATHS], 1,
+                       [Define if the system uses DOS-style pathnames.])])
+])

gl/m4/getloadavg.m4

@@ -0,0 +1,216 @@
+# Check for getloadavg.
+
+# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2024 Free
+# Software Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+#serial 10
+
+# Autoconf defines AC_FUNC_GETLOADAVG, but that is obsolescent.
+# New applications should use gl_GETLOADAVG instead.
+
+# gl_GETLOADAVG
+# -------------
+AC_DEFUN([gl_GETLOADAVG],
+[AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+
+# Persuade glibc <stdlib.h> to declare getloadavg().
+AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+gl_save_LIBS=$LIBS
+
+# getloadavg is present in libc on glibc >= 2.2, Mac OS X, FreeBSD >= 2.0,
+# NetBSD >= 0.9, OpenBSD >= 2.0, Solaris >= 7.
+HAVE_GETLOADAVG=1
+AC_CHECK_FUNC([getloadavg], [],
+  [gl_func_getloadavg_done=no
+
+   # Some systems with -lutil have (and need) -lkvm as well, some do not.
+   # On Solaris, -lkvm requires nlist from -lelf, so check that first
+   # to get the right answer into the cache.
+   # For kstat on solaris, we need to test for libelf and libkvm to force the
+   # definition of SVR4 below.
+   if test $gl_func_getloadavg_done = no; then
+     AC_CHECK_LIB([elf], [elf_begin], [LIBS="-lelf $LIBS"])
+     AC_CHECK_LIB([kvm], [kvm_open], [LIBS="-lkvm $LIBS"])
+     # Check for the 4.4BSD definition of getloadavg.
+     AC_CHECK_LIB([util], [getloadavg],
+       [LIBS="-lutil $LIBS" gl_func_getloadavg_done=yes])
+   fi
+
+   if test $gl_func_getloadavg_done = no; then
+     # There is a commonly available library for RS/6000 AIX.
+     # Since it is not a standard part of AIX, it might be installed locally.
+     gl_getloadavg_LIBS=$LIBS
+     if test $cross_compiling != yes; then
+       LIBS="-L/usr/local/lib $LIBS"
+     fi
+     AC_CHECK_LIB([getloadavg], [getloadavg],
+                  [LIBS="-lgetloadavg $LIBS" gl_func_getloadavg_done=yes],
+                  [LIBS=$gl_getloadavg_LIBS])
+   fi
+
+   # Set up the replacement function if necessary.
+   if test $gl_func_getloadavg_done = no; then
+     HAVE_GETLOADAVG=0
+
+     # Solaris has libkstat which does not require root.
+     AC_CHECK_LIB([kstat], [kstat_open])
+     test $ac_cv_lib_kstat_kstat_open = yes && gl_func_getloadavg_done=yes
+
+     # AIX has libperfstat which does not require root
+     if test $gl_func_getloadavg_done = no; then
+       AC_CHECK_LIB([perfstat], [perfstat_cpu_total])
+       test $ac_cv_lib_perfstat_perfstat_cpu_total = yes && gl_func_getloadavg_done=yes
+     fi
+
+     if test $gl_func_getloadavg_done = no; then
+       AC_CHECK_HEADER([sys/dg_sys_info.h],
+         [gl_func_getloadavg_done=yes
+          AC_DEFINE([DGUX], [1], [Define to 1 for DGUX with <sys/dg_sys_info.h>.])
+          AC_CHECK_LIB([dgc], [dg_sys_info])])
+     fi
+   fi])
+
+if test "x$gl_save_LIBS" = x; then
+  GETLOADAVG_LIBS=$LIBS
+else
+  GETLOADAVG_LIBS=`echo "$LIBS" | sed "s!$gl_save_LIBS!!"`
+fi
+LIBS=$gl_save_LIBS
+
+AC_SUBST([GETLOADAVG_LIBS])dnl
+
+# Test whether the system declares getloadavg. Solaris has the function
+# but declares it in <sys/loadavg.h>, not <stdlib.h>.
+AC_CHECK_HEADERS([sys/loadavg.h])
+if test $ac_cv_header_sys_loadavg_h = yes; then
+  HAVE_SYS_LOADAVG_H=1
+else
+  HAVE_SYS_LOADAVG_H=0
+fi
+AC_CHECK_DECL([getloadavg], [], [HAVE_DECL_GETLOADAVG=0],
+  [[#if HAVE_SYS_LOADAVG_H
+    /* OpenIndiana has a bug: <sys/time.h> must be included before
+       <sys/loadavg.h>.  */
+    # include <sys/time.h>
+    # include <sys/loadavg.h>
+    #endif
+    #include <stdlib.h>]])
+])# gl_GETLOADAVG
+
+
+# gl_PREREQ_GETLOADAVG
+# --------------------
+# Set up the AC_LIBOBJ replacement of 'getloadavg'.
+AC_DEFUN([gl_PREREQ_GETLOADAVG],
+[
+# Figure out what our getloadavg.c needs.
+
+AC_CHECK_HEADERS_ONCE([sys/param.h unistd.h])
+
+# On HPUX9, an unprivileged user can get load averages this way.
+if test $gl_func_getloadavg_done = no; then
+  AC_CHECK_FUNCS([pstat_getdynamic], [gl_func_getloadavg_done=yes])
+fi
+
+# We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
+# uses stabs), but it is still SVR4.  We cannot check for <elf.h> because
+# Irix 4.0.5F has the header but not the library.
+if test $gl_func_getloadavg_done = no && test "$ac_cv_lib_elf_elf_begin" = yes \
+    && test "$ac_cv_lib_kvm_kvm_open" = yes; then
+  gl_func_getloadavg_done=yes
+  AC_DEFINE([SVR4], [1], [Define to 1 on System V Release 4.])
+fi
+
+if test $gl_func_getloadavg_done = no; then
+  AC_CHECK_HEADER([inq_stats/cpustats.h],
+  [gl_func_getloadavg_done=yes
+   AC_DEFINE([UMAX], [1], [Define to 1 for Encore UMAX.])
+   AC_DEFINE([UMAX4_3], [1],
+             [Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+              instead of <sys/cpustats.h>.])])
+fi
+
+if test $gl_func_getloadavg_done = no; then
+  AC_CHECK_HEADER([sys/cpustats.h],
+  [gl_func_getloadavg_done=yes; AC_DEFINE([UMAX])])
+fi
+
+if test $gl_func_getloadavg_done = no; then
+  AC_CHECK_HEADERS([mach/mach.h])
+fi
+
+AC_CHECK_HEADERS([nlist.h],
+[AC_CHECK_MEMBERS([struct nlist.n_un.n_name],
+                  [], [],
+                  [#include <nlist.h>])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
+                   [[struct nlist x;
+                    #ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME
+                    x.n_un.n_name = "";
+                    #else
+                    x.n_name = "";
+                    #endif]])],
+                [AC_DEFINE([N_NAME_POINTER], [1],
+                           [Define to 1 if the nlist n_name member is a pointer])])
+])dnl
+])# gl_PREREQ_GETLOADAVG
+
+# ---- GNU Make
+# These macros are imported from stdlib which we don't want to include
+# Only the getloadavg content is imported.
+
+AC_DEFUN_ONCE([gl_STDLIB_H],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use, and which is not
+  dnl guaranteed by C89.
+  gl_WARN_ON_USE_PREPARE([[#include <stdlib.h>
+#if HAVE_SYS_LOADAVG_H
+/* OpenIndiana has a bug: <sys/time.h> must be included before
+   <sys/loadavg.h>.  */
+# include <sys/time.h>
+# include <sys/loadavg.h>
+#endif
+#if HAVE_RANDOM_H
+# include <random.h>
+#endif
+    ]], [getloadavg])
+])
+
+# gl_STDLIB_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STDLIB_MODULE_INDICATOR],
+[
+  dnl Ensure to expand the default settings once only.
+  gl_STDLIB_H_REQUIRE_DEFAULTS
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd.  It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STDLIB_H_REQUIRE_DEFAULTS],
+[
+  m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS], [
+    gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOADAVG])
+  ])
+  m4_require(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS])
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STDLIB_H_DEFAULTS],
+[
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_DECL_GETLOADAVG=1;    AC_SUBST([HAVE_DECL_GETLOADAVG])
+])

gl/modules/concat-filename

@@ -0,0 +1,24 @@
+Description:
+Construct a full filename by concatenating a directory name, a relative
+filename, and a suffix.
+
+Files:
+lib/concat-filename.h
+lib/concat-filename.c
+
+Depends-on:
+filename
+
+configure.ac:
+
+Makefile.am:
+lib_SOURCES += concat-filename.c
+
+Include:
+"concat-filename.h"
+
+License:
+LGPLv2+
+
+Maintainer:
+all

gl/modules/findprog-in

@@ -0,0 +1,28 @@
+Description:
+Locating a program in a given path.
+
+Files:
+lib/findprog.h
+lib/findprog-in.c
+m4/findprog-in.m4
+m4/eaccess.m4
+
+Depends-on:
+stdbool
+filename
+concat-filename
+
+configure.ac:
+gl_FINDPROG_IN
+
+Makefile.am:
+lib_SOURCES += findprog.h findprog-in.c
+
+Include:
+"findprog.h"
+
+License:
+LGPLv2+
+
+Maintainer:
+all

gl/modules/getloadavg

@@ -0,0 +1,40 @@
+Description:
+Return the current system load averages.
+
+Files:
+lib/getloadavg.c
+m4/getloadavg.m4
+
+Depends-on:
+snippet/warn-on-use
+extensions
+intprops  [test $HAVE_GETLOADAVG = 0]
+stdbool   [test $HAVE_GETLOADAVG = 0]
+
+configure.ac:
+gl_STDLIB_H
+gl_STDLIB_H_REQUIRE_DEFAULTS
+AC_REQUIRE([AC_CANONICAL_HOST])
+gl_GETLOADAVG
+gl_CONDITIONAL([GL_COND_OBJ_GETLOADAVG], [test $HAVE_GETLOADAVG = 0])
+AM_COND_IF([GL_COND_OBJ_GETLOADAVG], [
+  gl_PREREQ_GETLOADAVG
+])
+gl_STDLIB_MODULE_INDICATOR([getloadavg])
+
+Makefile.am:
+if GL_COND_OBJ_GETLOADAVG
+lib_SOURCES += getloadavg.c
+endif
+
+Include:
+<stdlib.h>
+
+Link:
+$(GETLOADAVG_LIBS)
+
+License:
+GPL
+
+Maintainer:
+Jim Meyering

gl/modules/make-glob

@@ -0,0 +1,112 @@
+Description:
+GNU Make version of fnmatch()/glob() functions.  This is a holdover from
+a very old version of the globbing library.
+
+Files:
+lib/fnmatch.c
+lib/fnmatch.in.h
+lib/glob.c
+lib/glob.in.h
+
+configure.ac:
+# Check the system to see if it provides GNU glob.  If not, use our
+# local version.  Also avoid versions of glibc which have symlink bug
+# https://sourceware.org/bugzilla/show_bug.cgi?id=866 (test from gnulib)
+AC_CACHE_CHECK([if system libc has working GNU glob], [make_cv_sys_gnu_glob],[
+  if ln -s conf-doesntexist conf$$-globtest 2>/dev/null; then
+    make_check_symlink=yes
+  else
+    make_check_symlink=no
+  fi
+  if test $cross_compiling = yes || test $make_check_symlink = no; then
+    # When cross-compiling or without symlink support, check the version
+    AC_COMPILE_IFELSE(
+      [AC_LANG_PROGRAM(
+        [[#include <features.h>
+          #include <gnu-versions.h>
+          #include <glob.h>
+          #include <fnmatch.h>
+        ]],
+        [[
+          #if _GNU_GLOB_INTERFACE_VERSION == 0
+            GNU glob not available in libc
+          #elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 27)
+            GNU glob in libc has dangling symlink bug
+          #endif
+        ]])],
+      [make_cv_sys_gnu_glob=yes],
+      [make_cv_sys_gnu_glob=no])
+  else
+    # Check for GNU glob, and that it handles dangling symlinks properly
+    AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM(
+        [[#include <features.h>
+          #include <gnu-versions.h>
+          #include <glob.h>
+          #include <fnmatch.h>
+        ]],
+        [[
+          #if _GNU_GLOB_INTERFACE_VERSION == 0
+          return 1;
+          #else
+          glob_t found;
+          if (glob ("conf*-globtest", 0, 0, &found) == GLOB_NOMATCH)
+            return 1;
+          globfree (&found);
+          #endif
+        ]])],
+      [make_cv_sys_gnu_glob=yes],
+      [make_cv_sys_gnu_glob=no],
+      [dnl We don't get here.
+       :
+      ])
+  fi
+  test $make_check_symlink = no || rm -f conf$$-globtest
+])
+
+# Tell automake about this, so it can build the right .c files.
+AM_CONDITIONAL([USE_SYSTEM_GLOB], [test "$make_cv_sys_gnu_glob" = yes])
+
+# Tell build.sh which to use
+USE_SYSTEM_GLOB="$make_cv_sys_gnu_glob"
+AC_SUBST([USE_SYSTEM_GLOB])
+
+Makefile.am:
+if !USE_SYSTEM_GLOB
+libgnu_a_SOURCES += fnmatch.c
+
+BUILT_SOURCES += fnmatch.h
+
+fnmatch.h: fnmatch.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/fnmatch.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+MOSTLYCLEANFILES += fnmatch.h fnmatch.h-t
+
+libgnu_a_SOURCES += glob.c
+
+BUILT_SOURCES += glob.h
+
+glob.h: glob.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/glob.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+MOSTLYCLEANFILES += glob.h glob.h-t
+endif
+
+EXTRA_DIST += fnmatch.in.h glob.in.h
+
+Include:
+<glob.h>
+
+License:
+LGPLv2+
+
+Maintainer:
+all, glibc

gl/modules/make-macros

@@ -0,0 +1,16 @@
+Description:
+Install m4 macros for GNU Make.
+
+Files:
+m4/acinclude.m4
+m4/dospaths.m4
+
+configure.ac:
+# Check for DOS-style pathnames.
+pds_AC_DOS_PATHS
+
+License:
+GPLv3+
+
+Maintainer:
+gnumake

maintMakefile

@@ -0,0 +1,536 @@
+# Maintainer-only makefile segment.  This contains things that are relevant
+# only if you have the full copy of the GNU Make sources from the Git
+# tree, not a dist copy.
+
+# --------------------- #
+# Updating everything.  #
+# --------------------- #
+
+.PHONY: update
+update:
+
+BUGLIST := bug-make@gnu.org
+
+# These are related to my personal setup.
+GPG_KEYID := 80CB727A20C79BB2
+
+# SRCROOTDIR is just a handy location to keep source files in
+SRCROOTDIR ?= $(HOME)/src
+
+# Where to put the CVS checkout of the GNU web repository
+GNUWEBDIR ?= $(SRCROOTDIR)/gnu-www
+
+# Where to put the CVS checkout of the GNU Make web repository
+MAKEWEBDIR ?= $(SRCROOTDIR)/make/make-web
+
+# Enable Perl warnings for the test suite
+PERLFLAGS := -w
+
+# We like mondo-warnings!
+# Also force comments to be preserved.  This helps when using ccache, in
+# combination with GCC 7's implicit-fallthrough warning.
+MAKE_CFLAGS := -C -Wall -Wextra -Werror -Wwrite-strings -Wshadow \
+	-Wdeclaration-after-statement -Wbad-function-cast -Wformat-security \
+	-Wtype-limits -Wunused-but-set-parameter -Wlogical-op -Wpointer-arith \
+	-Wignored-qualifiers -Wformat-signedness -Wduplicated-cond
+
+# Allow extra options without overriding MAKE_CFLAGS
+EXTRA_CFLAGS :=
+
+AM_CFLAGS += $(MAKE_CFLAGS) $(EXTRA_CFLAGS)
+
+# Unfortunately the Guile headers are sometimes broken.  Convince GCC
+# to treat them as system headers so warnings are ignored.
+GUILE_CFLAGS := $(patsubst -I%,-isystem %,$(GUILE_CFLAGS))
+
+MAKE_MAINTAINER_MODE := -DMAKE_MAINTAINER_MODE
+AM_CPPFLAGS += $(MAKE_MAINTAINER_MODE)
+
+# Create preprocessor output files--GCC specific!
+%.i : %.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) -E -dD -o $@ $<
+
+# Create the mkconfig.h file for non-POSIX config headers
+
+all: src/mkconfig.h
+src/mkconfig.h: src/mkconfig.h.in config.status
+	./config.status --header=$@
+
+# Build the README
+
+all: README
+README : README.in config.status
+	./config.status --file=$@
+
+# Construct Makefiles by adding on dependencies, etc.
+#
+cvt = $(patsubst $1/%,$$($1)%,$(filter %.c,$2))
+Basic.mk: Basic.mk.template .dep_segment Makefile
+	rm -f $@
+	sed -e 's@%make_SOURCES%@$(call cvt,src,$(make_SRCS))@g' \
+	    -e 's@%w32_SOURCES%@$(call cvt,src,$(w32_SRCS))@g' \
+	    -e 's@%vms_SOURCES%@$(call cvt,src,$(vms_SRCS))@g' \
+	    -e 's@%loadavg_SOURCES%@$(call cvt,lib,$(loadavg_SRCS))@g' \
+	    -e 's@%alloca_SOURCES%@$(call cvt,lib,$(alloca_SRCS))@g' \
+	    -e 's@%glob_SOURCES%@$(call cvt,lib,$(glob_SRCS))@g' \
+	  $< > $@
+	echo >>$@; echo '# --------------- DEPENDENCIES' >>$@; echo '#' >>$@; \
+	echo >>$@; echo '$$(OBJECTS): $$(SRCDIR)/src/mkconfig.h' >>$@; \
+	sed -e 's@^\([^ ]*\)\.o:@$$(OUTDIR)\1.$$(OBJEXT):@' \
+	    -e 's@\([^ ]*\.[ch]\)@$$(SRCDIR)/\1@g' \
+	    -e 's@$$(SRCDIR)/src/config.h@$$(OUTDIR)src/config.h@g' \
+	    -e 's@$$(SRCDIR)/lib/alloca.h@@g' \
+	    -e 's@$$(SRCDIR)/lib/stdbool.h@@g' \
+	  $(word 2,$^) >>$@
+	chmod a-w $@
+
+
+# Use automake to build a dependency list file, for Makebase.mk.
+#
+# Automake used to have a --generate-deps flag but it's gone now, so we have
+# to do it ourselves.
+#
+DEP_FILES := $(wildcard src/$(DEPDIR)/*.Po)
+.dep_segment: Makefile.am maintMakefile $(DEP_FILES)
+	rm -f $@
+	(for f in src/$(DEPDIR)/*.Po; do \
+	   echo ""; \
+	   echo "# $$f"; \
+	   sed	-e '/^[^:]*\.[ch] *:/d' \
+		-e 's, /usr/[^ ]*,,g' \
+		-e 's, $(srcdir)/, ,g' \
+		-e '/^ *\\$$/d' \
+		-e '/^ *$$/d' \
+		< $$f; \
+	 done) > $@
+
+# Cleaning
+
+GIT :=	git
+
+# git-clean:      Clean all "ignored" files.  Leave untracked files.
+# git-very-clean: Clean all files that aren't stored in source control.
+
+.PHONY: git-clean git-very-clean
+git-clean:
+	-$(GIT) clean -fdX
+git-very-clean: git-clean
+	-$(GIT) clean -fdx
+
+
+## ---------------------- ##
+## Generating ChangeLog.  ##
+## ---------------------- ##
+
+# Where the gnulib project has been locally cloned
+GNULIBDIR ?= $(or $(wildcard $(GNULIB_SRCDIR)),./gnulib)
+
+gl2cl-date := 2013-10-10
+gl2cl := $(GNULIBDIR)/build-aux/gitlog-to-changelog
+
+# Rebuild the changelog whenever a new commit is added
+ChangeLog: .check-git-HEAD
+	if test -f '$(gl2cl)'; then \
+	    '$(gl2cl)' --since='$(gl2cl-date)' > '$@'; \
+	else \
+	    echo "WARNING: $(gl2cl) is not available.  No $@ generated."; \
+	fi
+
+.check-git-HEAD: FORCE
+	sha="`git rev-parse HEAD`"; \
+	test -f '$@' && [ "`cat '$@' 2>/dev/null`" = "$$sha" ] \
+	    || echo "$$sha" > '$@'
+
+.PHONY: FORCE
+FORCE:;@:
+
+## ---------------- ##
+## Updating files.  ##
+## ---------------- ##
+RSYNC = rsync -Lrtvz
+WGET = wget --passive-ftp -np -nv
+ftp-gnu = ftp://ftp.gnu.org/gnu
+
+move_if_change =  if test -r $(target) && cmp -s $(target).t $(target); then \
+		    echo $(target) is unchanged; rm -f $(target).t; \
+		  else \
+		    mv -f $(target).t $(target); \
+		  fi
+
+# ------------------- #
+# Updating PO files.  #
+# ------------------- #
+
+# NOTE: This is handled by the bootstrap script now
+
+#update: po-update
+update: po-check
+
+# PO archive mirrors --- Be careful; some might not be fully populated!
+#   ftp://ftp.unex.es/pub/gnu-i18n/po/maint/
+#   ftp://tiger.informatik.hu-berlin.de/pub/po/maint/
+
+po_wget_flags = --recursive --level=1 --no-directories --no-check-certificate
+po_repo = https://translationproject.org/latest/$(PACKAGE)
+po_sync = translationproject.org::tp/latest/$(PACKAGE)/
+
+.PHONY: do-po-update po-update
+do-po-update:
+	tmppo="/tmp/po-$(PACKAGE)-$(PACKAGE_VERSION).$$$$" \
+	  && rm -rf "$$tmppo" \
+	  && mkdir "$$tmppo" \
+	  && $(RSYNC) $(po_sync)  "$$tmppo" \
+	  && cp "$$tmppo"/*.po $(top_srcdir)/po \
+	  && rm -rf "$$tmppo"
+	cd po && $(MAKE) update-po
+	$(MAKE) po-check
+
+po-update:
+	test -d "po" && $(MAKE) do-po-update
+
+# -------------------------- #
+# Updating GNU build files.  #
+# -------------------------- #
+
+# Note: this is handled by the bootstrap script now
+#update: scm-update
+
+.PHONY: scm-update
+scm-update: get-build-aux/texinfo.tex get-build-aux/config.guess \
+		get-build-aux/config.sub get-doc/make-stds.texi get-doc/fdl.texi
+
+# The following pseudo table associates a local directory and a URL
+# with each of the files that belongs to some other package and is
+# regularly updated from the specified URL.
+
+cvs-url = https://savannah.gnu.org/cgi-bin/viewcvs/~checkout~
+git-url = https://git.savannah.gnu.org/cgit
+target = $(patsubst get-%,%,$@)
+
+config-url = $(git-url)/config.git/plain/$(patsubst get-build-aux/%,%,$@)
+get-build-aux/config.guess get-build-aux/config.sub:
+	@echo Retrieving $(target) from $(config-url)
+	$(WGET) $(config-url) -O $(target).t \
+	  && $(move_if_change)
+
+gnulib-url = $(git-url)/gnulib.git/plain/build-aux/$(patsubst get-build-aux/%,%,$@)
+get-build-aux/texinfo.tex:
+	@echo Retrieving $(target) from $(gnulib-url)
+	$(WGET) $(gnulib-url) -O $(target).t \
+	  && $(move_if_change)
+
+gnustandards-url = $(cvs-url)/gnustandards/gnustandards/$(patsubst get-doc/%,%,$@)
+get-doc/make-stds.texi get-doc/fdl.texi:
+	@echo Retrieving $(target) from $(gnustandards-url)
+	$(WGET) $(gnustandards-url) -O $(target).t \
+	  && $(move_if_change)
+
+
+# ---------------------------- #
+# Extra configuration checks.  #
+# ---------------------------- #
+
+# Make the dist file contents more regular, if we're using GNU tar.
+# Suggested by Tzvetelin Katchov <katchov@gnu.org>
+
+export TAR_OPTIONS := --mode=u+w,go-w --owner=0 --group=0 --numeric-owner --sort=name
+
+# When I released 4.3 somehow the INSTALL file was missing.
+# When I tried to build it again, it was there.  I have no idea what happened
+# but add a new check to be sure it doesn't happen again.
+mk_dist_files = AUTHORS ChangeLog COPYING INSTALL README src/mkconfig.h
+
+dist: mk-dist mk-distcheck
+
+.PHONY: mk-distcheck
+mk-distcheck: distdir
+	@echo "Checking for extra installed files..."
+	@for fn in $(mk_dist_files); do \
+	    test -f '$(distdir)'/"$$fn" \
+		|| { echo "Missing dist file: $$fn"; exit 1; }; \
+	done; true
+
+# Make sure that the files in lib/ have been updated from the files in gl/lib/
+
+GL_LIB_FILES := $(wildcard gl/lib/*)
+
+mk-dist:
+	@echo "Checking gl/lib files..."
+	@for fn in $(GL_LIB_FILES); do \
+	    cmp $$fn $${fn##gl/} \
+		|| { echo "Run ./bootstrap --gen ?"; exit 1; }; \
+	done; true
+
+# ---------------------------------- #
+# Alternative configuration checks.  #
+# ---------------------------------- #
+
+CFGCHECK_CONFIGFLAGS =
+CFGCHECK_BUILDFLAGS  =
+# We can't use our mondo warnings as these are used to compile gnulib modules
+# as well, and that will fail.
+CFGCHECK_MAKEFLAGS   = # CFLAGS='$(AM_CFLAGS)'
+
+# We don't support C90 anymore, strictly, but this test still works (with lots
+# of warnings) and it helps us avoid egregious incompatibilities.
+checkcfg.strict-c90:  CFGCHECK_CONFIGFLAGS = CFLAGS='-std=c90 -pedantic'
+checkcfg.strict-c90:  CFGCHECK_MAKEFLAGS   =
+
+checkcfg.job-pipe:    CFGCHECK_CONFIGFLAGS = CPPFLAGS=-DJOBSERVER_USE_FIFO=0
+checkcfg.no-jobserver:CFGCHECK_CONFIGFLAGS = --disable-job-server
+checkcfg.no-load:     CFGCHECK_CONFIGFLAGS = --disable-load
+checkcfg.no-guile:    CFGCHECK_CONFIGFLAGS = --without-guile
+checkcfg.no-spawn:    CFGCHECK_CONFIGFLAGS = --disable-posix-spawn
+checkcfg.no-sysglob:  CFGCHECK_CONFIGFLAGS = make_cv_sys_gnu_glob=no
+checkcfg.no-loadavg:  CFGCHECK_CONFIGFLAGS = ac_cv_func_getloadavg=no \
+					     ac_cv_have_decl_getloadavg=no \
+					     gl_cv_have_raw_decl_getloadavg=no \
+					     ac_cv_lib_util_getloadavg=no \
+					     ac_cv_lib_getloadavg_getloadavg=no
+checkcfg.no-sync:     CFGCHECK_CONFIGFLAGS = CPPFLAGS=-DNO_OUTPUT_SYNC
+checkcfg.no-archives: CFGCHECK_CONFIGFLAGS = CPPFLAGS=-DNO_ARCHIVES
+
+CONFIG_CHECKS := \
+	checkcfg.strict-c90 \
+	checkcfg.job-pipe \
+	checkcfg.no-jobserver \
+	checkcfg.no-load \
+	checkcfg.no-guile \
+	checkcfg.no-spawn \
+	checkcfg.no-sysglob \
+	checkcfg.no-loadavg \
+	checkcfg.no-sync \
+	checkcfg.no-archives
+
+.PHONY: check-alt-config
+check-alt-config: $(CONFIG_CHECKS)
+	@echo --- $@ SUCCESS
+
+# Trick GNU Make so it doesn't run the submake as a recursive make.
+NR_MAKE = $(MAKE)
+
+# Check builds both with build.sh and with make
+build.sh_SCRIPT = exec >>'checkcfg.$*.log' 2>&1; set -x; \
+		cd $(distdir)/_build \
+		&& OUTDIR=_bld ../build.sh -k $(CFGCHECK_BUILD_FLAGS) \
+		&& _bld/make GMK_OUTDIR=../_bld $(AM_MAKEFLAGS) check-local \
+		&& _bld/make GMK_OUTDIR=../_bld $(AM_MAKEFLAGS) clean
+
+nrmake_SCRIPT = exec >>'checkcfg.$*.log' 2>&1; set -x; \
+		cd $(distdir)/_build \
+		&& $(NR_MAKE) $(AM_MAKEFLAGS) $(CFGCHECK_MAKEFLAGS) \
+		&& ./make $(AM_MAKEFLAGS) check \
+		&& ./make $(AM_MAKEFLAGS) clean
+
+$(CONFIG_CHECKS): checkcfg.%: distdir
+	@echo "Building $@ (output in checkcfg.$*.log)"
+	exec >'checkcfg.$*.log' 2>&1; \
+	   echo "Testing configure with $(CFGCHECK_CONFIGFLAGS)"; set -x; \
+	   rm -rf $(distdir)/_build \
+	&& mkdir $(distdir)/_build \
+	&& cd $(distdir)/_build \
+	&& ../configure --srcdir=.. $(CFGCHECK_CONFIGFLAGS) \
+	       $(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS)
+	$(build.sh_SCRIPT)
+	$(nrmake_SCRIPT)
+
+# Try using Basic.mk.  I can't test this on POSIX systems because it is only
+# used for non-POSIX systems; POSIX systems can just use normal
+# configure/Makefile.in etc.
+checkcfg.basicmk: checkcfg.% : distdir
+	@echo "Building $@ (output in checkcfg.$*.log)"
+	exec >'checkcfg.$*.log' 2>&1; \
+	   echo "Testing Basic.mk SRCDIR=.."; set -x; \
+	   rm -rf $(distdir)/_build \
+	&& mkdir $(distdir)/_build \
+	&& cd $(distdir)/_build \
+	&& ../configure --srcdir=.. \
+	       $(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS)
+	exec >>'checkcfg.$*.log' 2>&1; set -x; \
+	   cd $(distdir)/_build \
+	&& $(NR_MAKE) $(AM_MAKEFLAGS) -f ../Basic.mk SRCDIR=.. $(CFGCHECK_MAKEFLAGS)
+	&& ./make $(AM_MAKEFLAGS) -f ../Basic.mk SRCDIR=.. check \
+	&& ./make $(AM_MAKEFLAGS) -f ../Basic.mk SRCDIR=.. clean
+	exec >>'checkcfg.$*.log' 2>&1; \
+	   echo "Testing Basic.mk SRCDIR=."; set -x; \
+	&& rm -rf $(distdir)/_build \
+	&& cd $(distdir) \
+	&& ./configure \
+	       $(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS) \
+	&& $(NR_MAKE) $(AM_MAKEFLAGS) -f Basic.mk '$(CFGCHECK_MAKEFLAGS)' \
+	&& ./make $(AM_MAKEFLAGS) -f Basic.mk check \
+	&& ./make $(AM_MAKEFLAGS) -f Basic.mk clean
+
+
+## --------------- ##
+## Sanity checks.  ##
+## --------------- ##
+
+# Before we build a distribution be sure we run our local checks
+#distdir: local-check
+
+.PHONY: local-check po-check changelog-check
+
+# Checks that don't require Git.  Run 'changelog-check' last as
+# previous test may reveal problems requiring new ChangeLog entries.
+local-check: po-check changelog-check
+
+# copyright-check writable-files
+
+changelog-check:
+	if head $(top_srcdir)/ChangeLog | grep 'Version $(PACKAGE_VERSION)' >/dev/null; then \
+	  :; \
+	else \
+	  echo "$(PACKAGE_VERSION) not in ChangeLog" 1>&2; \
+	  exit 1; \
+	fi
+
+# Verify that all source files using _() are listed in po/POTFILES.in.
+# Ignore src/makeint.h; it defines _().
+po-check:
+	if test -f po/POTFILES.in; then \
+	  grep '^[^#]' po/POTFILES.in | sort > $@-1; \
+	  find [a-z]* -name '*.[ch]' | xargs grep -l '\b_(' | grep -v src/makeint.h | sort > $@-2; \
+	  diff -u $@-1 $@-2 || exit 1; \
+	  rm -f $@-1 $@-2; \
+	fi
+
+
+## --------------- ##
+## Generate docs.  ##
+## --------------- ##
+
+.PHONY: update-makeweb gendocs
+
+CVS = cvs
+
+makeweb-repo = $(USER)@cvs.sv.gnu.org:/web/make
+gnuweb-repo = :pserver:anonymous@cvs.sv.gnu.org:/web/www
+gnuweb-dir = www/server/standards
+
+# Get the GNU Make web page boilerplate etc.
+update-makeweb:
+	test -d '$(MAKEWEBDIR)' || mkdir -p '$(MAKEWEBDIR)'
+	test -d '$(MAKEWEBDIR)'/CVS \
+	    && { cd '$(MAKEWEBDIR)' && $(CVS) update; } \
+	    || { mkdir -p '$(dir $(MAKEWEBDIR))' && cd '$(dir $(MAKEWEBDIR))' \
+		 && $(CVS) -d $(makeweb-repo) co -d '$(notdir $(MAKEWEBDIR))' make; }
+
+# Get the GNU web page boilerplate etc.
+update-gnuweb:
+	test -d '$(GNUWEBDIR)' || mkdir -p '$(GNUWEBDIR)'
+	test -d '$(GNUWEBDIR)/$(gnuweb-dir)'/CVS \
+	    && { cd '$(GNUWEBDIR)/$(gnuweb-dir)' && $(CVS) update; } \
+	    || { cd '$(GNUWEBDIR)' && $(CVS) -d $(gnuweb-repo) co '$(gnuweb-dir)'; }
+
+gendocs: update-gnuweb update-makeweb
+	cp $(GNULIBDIR)/doc/gendocs_template doc
+	cd doc \
+	  && rm -rf doc/manual \
+	  && $(GNULIBDIR)/build-aux/gendocs.sh --email '$(BUGLIST)' \
+		make '$(PACKAGE_NAME) Manual'
+	find '$(MAKEWEBDIR)'/manual \( -name CVS -prune \) -o \( -name '[!.]*' -type f -exec rm -f '{}' \; \)
+	cp -r doc/manual '$(MAKEWEBDIR)'
+	@echo 'Status of $(MAKEWEBDIR) repo:' && cd '$(MAKEWEBDIR)' \
+	    && cvs -q -n update | grep -v '^M '
+	@echo '- cvs add <new files>' \
+	    && echo '- cvs remove <deleted files>' \
+	    && echo '- cvs commit' \
+	    && echo '- cvs tag make-$(subst .,-,$(PACKAGE_VERSION))'
+
+
+## --------------------------------------------- ##
+## Submitting Coverity cov-build results to Scan ##
+## --------------------------------------------- ##
+
+# Note you must have set COVERITY_TOKEN and COVERITY_EMAIL properly
+# to submit results.  COVERITY_PATH can be set to the root of the
+# cov-build tools if it's not already on your PATH.
+
+COV_BUILD_FILE := cov-build.tgz
+
+.PHONY: cov-build cov-submit
+
+cov-build: $(COV_BUILD_FILE)
+
+$(COV_BUILD_FILE): $(filter %.c %.h,$(DISTFILES))
+	$(MAKE) distdir
+	@echo "Running Coverity cov-build"
+	rm -rf '$(distdir)'/_build
+	mkdir '$(distdir)'/_build
+	cd '$(distdir)'/_build \
+	    && ../configure --srcdir=.. \
+		$(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS) \
+		$(CFGCHECK_MAKEFLAGS)
+	PATH="$${COVERITY_PATH:+$$COVERITY_PATH/bin:}$$PATH"; \
+	    cd '$(distdir)'/_build \
+		&& cov-build --dir cov-int ../build.sh
+	rm -f '$@'
+	(cd '$(distdir)'/_build && tar czf - cov-int) > '$@'
+
+cov-submit: $(COV_BUILD_FILE)-submitted
+
+$(COV_BUILD_FILE)-submitted: $(COV_BUILD_FILE)
+	@test -n "$(COVERITY_TOKEN)" || { echo 'COVERITY_TOKEN not set'; exit 1; }
+	@test -n "$(COVERITY_EMAIL)" || { echo 'COVERITY_EMAIL not set'; exit 1; }
+	rm -f '$@'
+	case '$(PACKAGE_VERSION)' in \
+	    (*.*.9*) type="daily build"; ext=".$$(date +%Y%m%d)" ;; \
+	    (*)      type="release"; ext= ;; \
+	esac; \
+	curl --form token='$(COVERITY_TOKEN)' \
+	     --form email='$(COVERITY_EMAIL)' \
+	     --form file='@$<' \
+	     --form version="$(PACKAGE_VERSION)$$ext" \
+	     --form description="$(PACKAGE_NAME) $$type" \
+	     'https://scan.coverity.com/builds?project=gmake'
+	cp '$<' '$@'
+
+
+## ------------------------- ##
+## Make release targets.     ##
+## ------------------------- ##
+
+.PHONY: tag-release
+tag-release:
+	case '$(PACKAGE_VERSION)' in \
+	    (*.*.9*) message=" candidate" ;; \
+	    (*)      message= ;; \
+	esac; \
+	$(GIT) tag -m "$(PACKAGE_NAME) release$$message $(PACKAGE_VERSION)" -u '$(GPG_KEYID)' '$(PACKAGE_VERSION)'
+
+
+## ------------------------- ##
+## GNU FTP upload artifacts. ##
+## ------------------------- ##
+
+# This target creates the upload artifacts.
+# Sign it with my key.  If you don't have my key/passphrase then sorry,
+# you're SOL! :)
+
+GNUPLOAD := $(GNULIBDIR)/build-aux/gnupload
+
+UPLOADS = upload-alpha upload-ftp
+.PHONY: $(UPLOADS)
+$(UPLOADS): upload-%: $(DIST_ARCHIVES)
+	$(GNUPLOAD) --user "$(GPG_KEYID)" --to "$*.gnu.org:make" -- $^
+
+
+# Rebuild Makefile.in if this file is modified.
+Makefile.in: maintMakefile
+
+# Copyright (C) 1997-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.

make-gdb.py

@@ -0,0 +1,281 @@
+"""GDB pretty-printer macros for GNU Make."""
+
+import gdb  # pylint: disable=import-error
+import gdb.printing  # pylint: disable=import-error
+
+
+# Memoize types we commonly use
+_TYPES = {}
+
+
+def getType(tname):
+    """Given a type name return a GDB type."""
+    global _TYPES
+    if tname not in _TYPES:
+        tn = tname.rstrip('*')
+        if tn not in _TYPES:
+            _TYPES[tn] = gdb.lookup_type(tn)
+        while tn != tname:
+            # Want a pointer type
+            t = tn
+            tn += '*'
+            _TYPES[tn] = _TYPES[t].pointer()
+    return _TYPES[tname]
+
+
+def isNullptr(val):
+    """Return True if the value is a null pointer."""
+    return int(val.cast(getType('unsigned long long'))) == 0
+
+
+class ShowArgv(gdb.Command):
+    """Print a null-terminated array of strings.
+
+    Argument:
+        A char** where the last one is NULL (e.g., argv)
+    """
+
+    def __init__(self):
+        """Create the showargv function."""
+        gdb.Command.__init__(self, "showargv", gdb.COMMAND_USER)
+
+    def invoke(self, arg, from_tty):
+        """Show the argv."""
+        args = gdb.string_to_argv(arg)
+        if len(args) != 1:
+            raise gdb.GdbError(self._usage)
+
+        val = gdb.parse_and_eval(args[0])
+        if val is None:
+            raise gdb.GdbError('%s is not a valid expression' % (args[0]))
+
+        strs = []
+        while not isNullptr(val.dereference()):
+            strs.append('"'+val.dereference().string()+'"')
+            val += 1
+
+        gdb.write("[%d] = [%s]\n" % (len(strs), ', '.join(strs)))
+        gdb.flush()
+
+
+ShowArgv()
+
+
+class ShowNextList(gdb.Command):
+    """Print a structure that has a "next" pointer.
+
+    Argument:
+        A pointer to a struct which contains a "next" member.
+    """
+
+    _usage = 'usage: showlist <listptr>'
+
+    def __init__(self):
+        """Create a "showlist" function."""
+        gdb.Command.__init__(self, "showlist", gdb.COMMAND_USER)
+
+    def invoke(self, arg, from_tty):
+        """Show the elements in the provided list."""
+        args = gdb.string_to_argv(arg)
+        if len(args) != 1:
+            raise gdb.GdbError(self._usage)
+
+        val = gdb.parse_and_eval(args[0])
+        if val is None:
+            raise gdb.GdbError('%s is not a valid expression' % (args[0]))
+        i = 0
+        while not isNullptr(val):
+            gdb.write("%s : %s\n" % (val, val.dereference()))
+            gdb.flush()
+            i += 1
+            val = val['next']
+        gdb.write("%s contains %d elements\n" % (args[0], i))
+        gdb.flush()
+
+
+ShowNextList()
+
+
+class FileLocation(object):
+    """Print a file location."""
+
+    def __init__(self, val):
+        """Create a FileLocation object."""
+        self.val = val
+
+    def to_string(self):
+        """Convert a FileLocation to a string."""
+        if int(self.val['filenm']):
+            return "%s:%d" % (str(self.val['filenm']), self.val['lineno'])
+        return 'NILF'
+
+
+class StringListPrinter(object):
+    """Print a stringlist."""
+
+    def __init__(self, val):
+        """Create a StringListPrinter object."""
+        self.val = val
+
+    def to_string(self):
+        """Convert a HashTable into a string."""
+        return "size=%d, capacity=%d" % (self.val['idx'], self.val['max'])
+
+    def children(self):
+        """Yield each string in the list."""
+        i = 0
+        elts = self.val['list']
+        while i < self.val['idx']:
+            nm = '[%d] ' % i
+            yield (nm, elts.dereference())
+            i += 1
+            elts += 1
+
+    def display_hint(self):
+        """Show the display hint for the pretty-printer."""
+        return 'array'
+
+
+class VariablePrinter(object):
+    """Print a struct variable."""
+
+    def __init__(self, val):
+        """Create a VariablePrinter object."""
+        self.val = val
+
+    def to_string(self):
+        """Convert a VariablePrinter object into a string."""
+        if self.val['append']:
+            a = '+='
+        elif self.val['conditional']:
+            a = '?='
+        else:
+            a = '='
+        flags = []
+        s = str(self.val['flavor'])
+        if s != 'f_bogus':
+            flags.append(s)
+        s = str(self.val['origin'])
+        if s != 'o_default':
+            flags.append(s)
+        s = str(self.val['export'])
+        if s != 'v_default':
+            flags.append(s)
+        return '%s[%s]: "%s" %s "%s"' % (
+            self.val['fileinfo'], ','.join(flags),
+            self.val['name'].string(), a, self.val['value'].string())
+
+
+class HashTablePrinter(object):
+    """Pretty-print a hash table."""
+
+    DELITEM = None
+
+    def __init__(self, val):
+        """Create a HashTablePrinter object."""
+        self.val = val
+
+    def to_string(self):
+        """Convert a HashTable into a string."""
+        return "size=%d, capacity=%d, empty=%d, collisions=%d, rehashes=%d" % (
+            self.val['ht_size'], self.val['ht_capacity'],
+            self.val['ht_empty_slots'], self.val['ht_collisions'],
+            self.val['ht_rehashes'])
+
+    def children(self):
+        """Yield each ID and value."""
+        for (i, v) in self.iterator():
+            nm = '[%d] ' % i
+            yield (nm, i)
+            yield (nm, v)
+
+    def iterator(self):
+        """Provide an iterator for HashTable."""
+        if HashTablePrinter.DELITEM is None:
+            HashTablePrinter.DELITEM = gdb.lookup_global_symbol('hash_deleted_item').value()
+        lst = self.val['ht_vec']
+        for i in range(0, self.val['ht_size']):
+            v = lst[i]
+            if int(v) != 0 and v != HashTablePrinter.DELITEM:
+                yield (i, v)
+
+    def display_hint(self):
+        """Show the display hint for the pretty-printer."""
+        return 'map'
+
+
+class VariableSetPrinter(object):
+    """Print a variable_set."""
+
+    def __init__(self, val):
+        """Create a variable_set pretty-printer."""
+        self.tbl = HashTablePrinter(val['table'])
+
+    def to_string(self):
+        """Convert a variable_set to string."""
+        return self.tbl.to_string()
+
+    def children(self):
+        """Iterate through variables and values."""
+        for (i, v) in self.tbl.iterator():
+            ptr = v.cast(getType('struct variable*'))
+            nm = '[%d] ' % (i)
+            yield (nm, ptr)
+            yield (nm, str(ptr.dereference()))
+
+    def display_hint(self):
+        """Show the display hint for the pretty-printer."""
+        return 'map'
+
+
+class VariableSetListPrinter(object):
+    """Print a variable_set_list."""
+
+    GLOBALSET = None
+
+    def __init__(self, val):
+        """Create a variable_set_list pretty-printer."""
+        self.val = val
+
+    def to_string(self):
+        """Convert a variable_set_list to string."""
+        return str(self.val.address)
+
+    def children(self):
+        """Iterate through variables and values."""
+        if VariableSetListPrinter.GLOBALSET is None:
+            block = gdb.lookup_global_symbol('init_hash_global_variable_set').symtab.static_block()
+            VariableSetListPrinter.GLOBALSET = gdb.lookup_symbol(
+                'global_variable_set', block)[0].value().address
+        ptr = self.val.address
+        i = 0
+        while not isNullptr(ptr):
+            nm = '[%d] ' % (i)
+            yield (nm, ptr['set'])
+            if int(ptr['set']) == int(VariableSetListPrinter.GLOBALSET):
+                yield (nm, "global_variable_set")
+            else:
+                yield (nm, str(ptr['set'].dereference()))
+            i += 1
+            ptr = ptr['next']
+
+    def display_hint(self):
+        """Show the display hint for the pretty-printer."""
+        return 'map'
+
+
+def build_pretty_printer():
+    """Install all the pretty-printers."""
+    pp = gdb.printing.RegexpCollectionPrettyPrinter("gnumake")
+    pp.add_printer('floc', r'^floc$', FileLocation)
+    pp.add_printer('stringlist', r'^stringlist$', StringListPrinter)
+    pp.add_printer('variable', r'^variable$', VariablePrinter)
+    pp.add_printer('hashtable', r'^hash_table$', HashTablePrinter)
+    pp.add_printer('variableset', r'^variable_set$', VariableSetPrinter)
+    pp.add_printer('variablesetlist', r'^variable_set_list$', VariableSetListPrinter)
+    return pp
+
+
+# Use replace=True so we can re-source this file
+gdb.printing.register_pretty_printer(gdb.current_objfile(),
+                                     build_pretty_printer(), replace=True)

makefile.com

@@ -0,0 +1,171 @@
+$!
+$! Makefile.com - builds GNU Make for VMS
+$!
+$! P1 = LIST will provide compiler listings.
+$! P2 = DEBUG will build an image with debug information
+$! P3 = WALL will enable all warning messages (some are suppressed since
+$!      one macro intentionally causes an error condition)
+$!
+$! In case of problems with the install you might contact me at
+$! zinser@decus.de (preferred) or zinser@sysdev.deutsche-boerse.com
+$
+$! hb
+$! But don't ask Martin Zinser about the lines, I added/changed.
+$! In case of an error do some cleanup
+$ on error then $ goto cleanup
+$! in case somebody set up her/his own symbol for cc
+$ set symbol/scope=(nolocal,noglobal)
+$!
+$! Just some general constants...
+$!
+$ true  = 1
+$ false = 0
+$ tmpnam = "temp_" + f$getjpi("","pid")
+$ tt = tmpnam + ".txt"
+$ tc = tmpnam + ".c"
+$!
+$! Look for the compiler used
+$!
+$ lval = ""
+$ if f$search("SYS$SYSTEM:DECC$COMPILER.EXE").eqs.""
+$  then
+$   if f$trnlnm("SYS").eqs."" then def/nolog sys sys$library:
+$   ccopt = ""
+$  else
+$   ccopt = "/decc/prefix=(all,except=(globfree,glob))"
+$   if f$trnlnm("SYS").eqs.""
+$    then
+$     if f$trnlnm("DECC$LIBRARY_INCLUDE").nes.""
+$      then
+$       define sys decc$library_include:
+$      else
+$       if f$search("SYS$COMMON:[DECC$LIB.REFERENCE]DECC$RTLDEF.DIR").nes."" -
+           then lval = "SYS$COMMON:[DECC$LIB.REFERENCE.DECC$RTLDEF],"
+$       if f$search("SYS$COMMON:[DECC$LIB.REFERENCE]SYS$STARLET_C.DIR").nes."" -
+           then lval = lval+"SYS$COMMON:[DECC$LIB.REFERENCE.SYS$STARLET_C],"
+$       lval=lval+"SYS$LIBRARY:"
+$       define sys 'lval
+$      endif
+$   endif
+$ endif
+$!
+$!
+$ if (p1 .eqs. "LIST")
+$ then
+$   ccopt = ccopt + "/list/show=(expan,inclu)"
+$ endif
+$!
+$! Should we build a debug image
+$!
+$ if (p2.eqs."DEBUG")
+$  then
+$   ccopt = ccopt + "/noopt/debug"
+$   lopt = "/debug"
+$ else
+$   lopt = ""
+$ endif
+$!
+$! Do we want to see all warnings
+$!
+$ if (p3.nes."WALL")
+$ then
+$   gosub check_cc_qual
+$ endif
+$ filelist = "[.src]ar [.src]arscan [.src]commands [.src]default [.src]dir " + -
+             "[.src]expand [.src]file [.src]function [.src]guile " + -
+             "[.src]hash [.src]implicit [.src]job [.src]load [.src]main " + -
+             "[.src]misc [.src]read [.src]remake [.src]remote-stub " + -
+             "[.src]rule [.src]output [.src]signame [.src]variable " + -
+             "[.src]version [.src]shuffle [.src]strcache [.src]vpath " + -
+             "[.src]vmsfunctions [.src]vmsify [.src]vms_progname " + -
+             "[.src]vms_exit [.src]vms_export_symbol " + -
+             "[.lib]alloca [.lib]fnmatch [.lib]glob [.src]getopt1 [.src]getopt"
+$!
+$ copy [.src]config.h-vms [.src]config.h
+$ copy [.lib]fnmatch.in.h [.lib]fnmatch.h
+$ copy [.lib]glob.in.h [.lib]glob.h
+$ n=0
+$ open/write optf make.opt
+$ loop:
+$ cfile = f$elem(n," ",filelist)
+$ if cfile .eqs. " " then goto linkit
+$ write sys$output "Compiling ''cfile'..."
+$ call compileit 'cfile'
+$ n = n + 1
+$ goto loop
+$ linkit:
+$ close optf
+$ link/exe=make make.opt/opt'lopt
+$ goto cleanup
+$
+$ cleanup:
+$ if f$trnlnm("SYS").nes."" then $ deassign sys
+$ if f$trnlnm("OPTF").nes."" then $ close optf
+$ if f$search("make.opt").nes."" then $ del make.opt;*
+$ exit
+$!
+$!-----------------------------------------------------------------------------
+$!
+$! Check if this is a define relating to the properties of the C/C++
+$! compiler
+$!
+$CHECK_CC_QUAL:
+$ open/write tmpc 'tc
+$ ccqual = "/warn=(disable=questcompare)"
+$ write tmpc "#include <stdio.h>"
+$ write tmpc "unsigned int i = 1;"
+$ write tmpc "int main(){"
+$ write tmpc "if (i < 0){printf(""Mission impossible\n"");}}"
+$ close tmpc
+$ gosub cc_qual_check
+$ return
+$!
+$!-----------------------------------------------------------------------------
+$!
+$! Check for properties of C/C++ compiler
+$!
+$CC_QUAL_CHECK:
+$ cc_qual = false
+$ set message/nofac/noident/nosever/notext
+$ cc 'ccqual' 'tmpnam'
+$ if $status then cc_qual = true
+$ set message/fac/ident/sever/text
+$ delete/nolog 'tmpnam'.*;*
+$ if cc_qual then ccopt = ccopt + ccqual
+$ return
+$!-----------------------------------------------------------------------------
+$!
+$ compileit : subroutine
+$ ploc = f$locate("]",p1)
+$! filnam = p1
+$ if ploc .lt. f$length(p1)
+$ then
+$   objdir = f$extract(0, ploc+1, p1)
+$   write optf p1
+$ else
+$   objdir := []
+$   write optf objdir+p1
+$ endif
+$ cc'ccopt'/nested=none/include=([],[.src],[.lib])/obj='objdir' -
+  /define=("allocated_variable_expand_for_file=alloc_var_expand_for_file",-
+  "unlink=remove","HAVE_CONFIG_H","VMS") -
+  'p1'
+$ exit
+$ endsubroutine : compileit
+$!
+$!-----------------------------------------------------------------------------
+$!Copyright (C) 1996-2024 Free Software Foundation, Inc.
+$!This file is part of GNU Make.
+$!
+$!GNU Make is free software; you can redistribute it and/or modify it under
+$!the terms of the GNU General Public License as published by the Free Software
+$!Foundation; either version 3 of the License, or (at your option) any later
+$!version.
+$!
+$!GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+$!WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+$!FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+$!details.
+$!
+$!You should have received a copy of the GNU General Public License along with
+$!this program.  If not, see <https://www.gnu.org/licenses/>.

mk/Posix.mk.in

@@ -0,0 +1,28 @@
+# GNU -*-Makefile-*- to build GNU Make on POSIX systems
+#
+# POSIX overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Very little is needed here since the default Basic.mk assumes POSIX
+
+prog_SOURCES += $(src)/posixos.c
+
+extra_CPPFLAGS += @GUILE_CFLAGS@
+extra_LDFLAGS += @AM_LDFLAGS@
+LDLIBS += @LIBOBJS@ @gl_LIBOBS@ @ALLOCA@
+LDLIBS += @GUILE_LIBS@ @GETLOADAVG_LIBS@ @LIBINTL@ @LIBS@

mk/VMS.mk

@@ -0,0 +1,97 @@
+# GNU -*-Makefile-*- to build GNU Make on VMS
+#
+# VMS overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+src = [.src]
+lib = [.lib]
+SRCDIR = []
+
+OBJEXT = .obj
+EXEEXT = .exe
+
+e =
+s = $e $e
+c = ,
+
+defs = HAVE_CONFIG_H
+
+ifeq ($(CC),cc)
+defs += VMS unlink=remove allocated_variable_expand_for_file=alloc_var_expand_for_file
+else
+defs += GCC_IS_NATIVE
+ifeq ($(ARCH),VAX)
+defs += VAX
+endif
+endif
+
+extra_CPPFLAGS = /define=($(subst $s,$c,$(patsubst %,"%",$(defs))))
+
+cinclude = /nested=none/include=($(src),$(lib))
+ifeq ($(CC),cc)
+cprefix = /prefix=(all,except=(glob,globfree))
+cwarn = /standard=relaxed/warn=(disable=questcompare)
+endif
+
+extra_CFLAGS = $(cinclude)$(cprefix)$(cwarn)
+
+#extra_LDFLAGS = /deb
+extra_LDFLAGS =
+
+# If your system needs extra libraries loaded in, define them here.
+# System V probably need -lPW for alloca.
+# if on vax, uncomment the following line
+#LDLIBS = ,c.opt/opt
+ifeq ($(CC),cc)
+#LDLIBS =,sys$$library:vaxcrtl.olb/lib
+else
+LDLIBS =,gnu_cc_library:libgcc.olb/lib
+endif
+
+# If your system doesn't have alloca, or the one provided is bad,
+# uncomment this
+#ALLOCA = $(alloca_SOURCES)
+
+# If your system doesn't have alloca.h, or the one provided is bad,
+# uncomment this
+#BUILT_SOURCES += $(lib)alloca.h
+
+prog_SOURCES += $(ALLOCA) $(glob_SOURCES) $(vms_SOURCES)
+
+BUILT_SOURCES += $(lib)fnmatch.h $(lib)glob.h
+
+COMPILE.cmd = $(CC) $(extra_CFLAGS)$(CFLAGS)/obj=$@ $(extra_CPPFLAGS)$(CPPFLAGS) $1
+
+LINK.cmd = $(LD)$(extra_LDFLAGS)$(LDFLAGS)/exe=$@ $(subst $s,$c,$1)$(LDLIBS)
+
+# Don't know how to do this
+CHECK.cmd =
+
+MKDIR.cmd = create/dir $1
+RM.cmd = delete $1
+CP.cmd = copy $1 $2
+
+define CLEANSPACE
+	-purge [...]
+	-delete $(PROG);
+	-delete $(src)*.$(OBJEXT);
+endef
+
+
+$(OUTDIR)$(src)config.h: $(SRCDIR)$(src)config.h-vms
+	$(call CP.cmd,$<,$@)

mk/Windows32.mk

@@ -0,0 +1,139 @@
+# GNU -*-Makefile-*- to build GNU Make on Windows
+#
+# Windows overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# TARGET_TYPE can be either "release" or "debug"
+TARGET_TYPE = release
+
+# TOOLCHAIN can be either "msvc" or "gcc"
+TOOLCHAIN = msvc
+
+# Translate a POSIX path into a Windows path.  Don't bother with drives.
+# Used only inside recipes, with DOS/CMD tools that require it.
+P2W = $(subst /,\,$1)
+
+prog_SOURCES += $(loadavg_SOURCES) $(glob_SOURCES) $(w32_SOURCES)
+
+utf8_SOURCES = $(src)w32/utf8.rc $(src)w32/utf8.manifest
+
+BUILT_SOURCES += $(lib)alloca.h $(lib)fnmatch.h $(lib)glob.h
+
+w32_LIBS = kernel32 user32 gdi32 winspool comdlg32 advapi32 shell32 ole32 \
+	   oleaut32 uuid odbc32 odbccp32
+
+CPPFLAGS =
+CFLAGS =
+LDFLAGS =
+
+# --- Visual Studio
+msvc_CC = cl.exe
+msvc_RC = rc.exe
+msvc_LD = link.exe
+
+msvc_CPPFLAGS = /DHAVE_CONFIG_H /DMK_OS_W32=1 /DWIN32 /D_CONSOLE
+msvc_CPPFLAGS += /I$(OUTDIR)src /I$(SRCDIR)/src /I$(SRCDIR)/src/w32/include /I$(OUTDIR)lib /I$(SRCDIR)/lib
+
+msvc_CFLAGS = /nologo /MT /W4 /EHsc
+msvc_CFLAGS += /FR$(OUTDIR) /Fp$(BASE_PROG).pch /Fd$(BASE_PROG).pdb
+
+msvc_LDFLAGS = /nologo /SUBSYSTEM:console /PDB:$(BASE_PROG).pdb
+
+msvc_LDLIBS = $(addsuffix .lib,$(w32_LIBS))
+
+msvc_C_SOURCE = /c
+msvc_RC_SOURCE =
+msvc_OUTPUT_OPTION = /Fo$@
+msvc_LINK_OUTPUT = /OUT:$@
+
+release_msvc_OUTDIR = ./WinRel/
+release_msvc_CPPFLAGS = /D NDEBUG
+release_msvc_CFLAGS = /O2
+
+debug_msvc_OUTDIR = ./WinDebug/
+debug_msvc_CPPFLAGS = /D _DEBUG
+debug_msvc_CFLAGS = /Zi /Od
+debug_msvc_LDFLAGS = /DEBUG
+
+# --- GCC
+gcc_CC = gcc
+gcc_RC = windres
+gcc_LD = $(gcc_CC)
+
+release_gcc_OUTDIR = ./GccRel/
+debug_gcc_OUTDIR = ./GccDebug/
+
+gcc_CPPFLAGS = -DHAVE_CONFIG_H -I$(OUTDIR)src -I$(SRCDIR)/src -I$(SRCDIR)/src/w32/include -I$(OUTDIR)lib -I$(SRCDIR)/lib
+gcc_CFLAGS = -mthreads -Wall -std=gnu99 -gdwarf-2 -g3
+gcc_LDFLAGS = -mthreads -gdwarf-2 -g3
+gcc_LDLIBS = $(addprefix -l,$(w32_libs))
+
+gcc_C_SOURCE = -c
+gcc_RC_SOURCE = -i
+gcc_OUTPUT_OPTION = -o $@
+gcc_LINK_OUTPUT = -o $@
+
+debug_gcc_CFLAGS = -O0
+release_gcc_CFLAGS = -O2
+
+# ---
+
+RES_COMPILE.cmd = $(RC) $(OUTPUT_OPTION) $(RC_SOURCE) $1
+LINK.cmd = $(LD) $(extra_LDFLAGS) $(LDFLAGS) $(TARGET_ARCH) $1 $(LDLIBS) $(LINK_OUTPUT)
+
+CHECK.cmd = cmd /c cd tests \& .\run_make_tests.bat -make ../$(PROG)
+
+MKDIR.cmd = cmd /c mkdir $(call P2W,$1)
+RM.cmd = cmd /c del /F /Q $(call P2W,$1)
+CP.cmd = cmd /c copy /Y $(call P2W,$1 $2)
+
+CC = $($(TOOLCHAIN)_CC)
+RC = $($(TOOLCHAIN)_RC)
+LD = $($(TOOLCHAIN)_LD)
+
+C_SOURCE = $($(TOOLCHAIN)_C_SOURCE)
+RC_SOURCE = $($(TOOLCHAIN)_RC_SOURCE)
+OUTPUT_OPTION = $($(TOOLCHAIN)_OUTPUT_OPTION)
+LINK_OUTPUT = $($(TOOLCHAIN)_LINK_OUTPUT)
+
+OUTDIR = $($(TARGET_TYPE)_$(TOOLCHAIN)_OUTDIR)
+
+OBJEXT	= obj
+EXEEXT	= .exe
+
+_CUSTOM = $($(TOOLCHAIN)_$1) $($(TARGET_TYPE)_$1) $($(TARGET_TYPE)_$(TOOLCHAIN)_$1)
+
+# I'm not sure why this builds gnumake rather than make...?
+PROG = $(OUTDIR)gnumake$(EXEEXT)
+BASE_PROG = $(basename $(PROG))
+
+extra_CPPFLAGS = $(call _CUSTOM,CPPFLAGS)
+extra_CFLAGS = $(call _CUSTOM,CFLAGS)
+extra_LDFLAGS = $(call _CUSTOM,LDFLAGS)
+LDLIBS = $(call _CUSTOM,LDLIBS)
+
+$(OUTDIR)src/config.h: $(SRCDIR)/src/config.h.W32
+	$(call CP.cmd,$<,$@)
+
+w32_UTF8OBJ = $(OUTDIR)src/w32/utf8.$(OBJEXT)
+$(w32_UTF8OBJ): $(utf8_SOURCES)
+	$(call RES_COMPILE.cmd,$<)
+
+ifneq (, $(shell where $(RC) 2>nul))
+RESOURCE_OBJECTS = $(w32_UTF8OBJ)
+endif

mk/msdosdjgpp.mk

@@ -0,0 +1,43 @@
+# GNU -*-Makefile-*- to build GNU Make on MS-DOS with DJGPP
+#
+# MS-DOS overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+OBJEXT = o
+EXEEXT = .exe
+
+CC = gcc
+
+# Translate a POSIX path into a Windows path.  Don't bother with drives.
+# Used only inside recipes, with DOS/CMD tools that require it.
+P2W = $(subst /,\,$1)
+
+prog_SOURCES += $(loadavg_SOURCES) $(glob_SOURCES)
+
+BUILT_SOURCES += $(lib)alloca.h $(lib)fnmatch.h $(lib)glob.h
+
+INCLUDEDIR = c:/djgpp/include
+LIBDIR = c:/djgpp/lib
+LOCALEDIR = c:/djgpp/share
+
+MKDIR.cmd = command.com /c mkdir $(call P2W,$1)
+RM.cmd = command.com /c del /F /Q $(call P2W,$1)
+CP.cmd = command.com /c copy /Y $(call P2W,$1 $2)
+
+$(OUTDIR)src/config.h: $(SRCDIR)/src/configh.dos
+	$(call CP.cmd,$<,$@)

po/.gitignore

@@ -0,0 +1,4 @@
+*
+!.gitignore
+!LINGUAS
+!POTFILES.in

po/LINGUAS

@@ -0,0 +1,31 @@
+be
+bg
+cs
+da
+de
+es
+fi
+fr
+ga
+gl
+he
+hr
+id
+it
+ja
+ka
+ko
+lt
+nl
+pl
+pt
+pt_BR
+ro
+ru
+sr
+sv
+tr
+uk
+vi
+zh_CN
+zh_TW

po/POTFILES.in

@@ -0,0 +1,48 @@
+# List of source files containing translatable strings.
+# Copyright (C) 2000-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+src/ar.c
+src/arscan.c
+src/commands.c
+src/dir.c
+src/expand.c
+src/file.c
+src/function.c
+src/getopt.c
+src/guile.c
+src/hash.c
+src/implicit.c
+src/job.c
+src/load.c
+src/main.c
+src/misc.c
+src/output.c
+src/posixos.c
+src/read.c
+src/remake.c
+src/remote-cstms.c
+src/rule.c
+src/shuffle.c
+src/signame.c
+src/strcache.c
+src/variable.c
+src/vmsfunctions.c
+src/vmsjobs.c
+src/vpath.c
+src/warning.c
+src/warning.h
+src/w32/w32os.c

prepare_vms.com

@@ -0,0 +1,63 @@
+$!
+$! prepare_vms.com  - Build config.h-vms from master on VMS.
+$!
+$! This is used for building off the master instead of a release tarball.
+$!
+$!
+$! First try ODS-5, Pathworks V6 or UNZIP name.
+$!
+$ config_template = f$search("sys$disk:[.src]mkconfig*h.in")
+$ if config_template .eqs. ""
+$ then
+$!
+$!  Try NFS, VMStar, or Pathworks V5 ODS-2 encoded name.
+$!
+$   config_template = f$search("sys$disk:[.src]mkconfig.h*in")
+$   if config_template .eqs. ""
+$   then
+$       write sys$output "Could not find mkconfig.h.in!"
+$       exit 44
+$   endif
+$ endif
+$ config_template_file = f$parse(config_template,,,"name")
+$ config_template_type = f$parse(config_template,,,"type")
+$ config_template = "sys$disk:[.src]" + config_template_file + config_template_type
+$!
+$!
+$! Pull the version from configure.ac
+$!
+$ open/read ac_file sys$disk:[]configure.ac
+$ac_read_loop:
+$ read ac_file/end=ac_read_loop_end line_in
+$ key = f$extract(0, 7, line_in)
+$ if key .nes. "AC_INIT" then goto ac_read_loop
+$ package = f$element (1,"[",line_in)
+$ package = f$element (0,"]",package)
+$ version = f$element (2,"[",line_in)
+$ version = f$element (0,"]",version)
+$ac_read_loop_end:
+$ close ac_file
+$!
+$ if (version .eqs. "")
+$ then
+$    write sys$output "Unable to determine version!"
+$    exit 44
+$ endif
+$!
+$!
+$ outfile = "sys$disk:[.src]mkconfig.h"
+$!
+$! Note the pipe command is close to the length of 255, which is the
+$! maximum token length prior to VMS V8.2:
+$! %DCL-W-TKNOVF, command element is too long - shorten
+$! PDS: Blown out; someone else will have to figure this out
+$ pipe (write sys$output "sub,@PACKAGE@,make,WHOLE/NOTYPE" ;-
+        write sys$output "sub,@PACKAGE_BUGREPORT@,bug-make@gnu.org,WHOLE/NOTYPE" ;-
+        write sys$output "sub,@PACKAGE_NAME@,GNU Make,WHOLE/NOTYPE" ;-
+        write sys$output "sub,@PACKAGE_TARNAME@,make,WHOLE/NOTYPE" ;-
+        write sys$output "sub,@PACKAGE_URL@,https://www.gnu.org/software/make/,WHOLE/NOTYPE" ;-
+        write sys$output "sub,@PACKAGE_VERSION@,''version',WHOLE/NOTYPE" ;-
+        write sys$output "exit") |-
+       edit/edt 'config_template'/out='outfile'/command=sys$pipe >nla0:
+$!
+$ write sys$output "GNU Make version: ", version, " prepared for VMS"

scripts/copyright-update

@@ -0,0 +1,63 @@
+#!/bin/sh
+#
+# Copyright (C) 2014-2024 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# Update GNU Make copyrights using gnulib update-copyright
+
+EXCLUDE='^\(\.[a-z].*\|.*/\.[a-z].*\|.*COPYING\|src/hash\.[ch]\|ChangeLog.*\|.*/ChangeLog.*\|INSTALL\|doc/make\.texi\|bootstrap\)$'
+
+update=${UPDATE_COPYRIGHT:-${GNULIB_SRCDIR:-../../gnulib}/build-aux/update-copyright}
+
+die () { echo "$*"; exit 1; }
+
+getfiles () {
+    git ls-files | grep -v "$EXCLUDE"
+}
+
+run () {
+    cmd=$(command -v "$update") || die "Cannot locate update-copyright ($update)"
+    test -x "$cmd" || die "Cannot locate update-copyright ($update)"
+
+    force=false
+
+    case $1 in
+        (-v) getfiles | sort; exit 0 ;;
+        (-f) force=true ;;
+        (--) : ;;
+        (-*) echo "usage: $0 [-v]"; exit 1 ;;
+    esac
+
+    if $force; then
+        : just do it
+    elif test ! -f src/makeint.h; then
+        die "Run in the root of the GNU Make workspace"
+    elif test -f configure; then
+        die "Run in a clean workspace (git clean -fdX)"
+    fi
+
+    # We use intervals
+    export UPDATE_COPYRIGHT_USE_INTERVALS=1
+
+    "$cmd" $(getfiles)
+
+    echo "*** Update doc/make.texi copyright by hand!"
+    echo "*** Update src/main.c:print_version() copyright by hand!"
+
+    exit 0
+}
+
+run "$@"
+
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.

src/ar.c

@@ -0,0 +1,332 @@
+/* Interface to 'ar' archives for GNU Make.
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#ifndef NO_ARCHIVES
+
+#include "filedef.h"
+#include "dep.h"
+#include <fnmatch.h>
+#include <intprops.h>
+
+/* Return nonzero if NAME is an archive-member reference, zero if not.  An
+   archive-member reference is a name like 'lib(member)' where member is a
+   non-empty string.
+   If a name like 'lib((entry))' is used, a fatal error is signaled at
+   the attempt to use this unsupported feature.  */
+
+int
+ar_name (const char *name)
+{
+  const char *p = strchr (name, '(');
+  const char *end;
+
+  if (p == NULL || p == name)
+    return 0;
+
+  end = p + strlen (p) - 1;
+  if (*end != ')' || end == p + 1)
+    return 0;
+
+  if (p[1] == '(' && end[-1] == ')')
+    OS (fatal, NILF, _("attempt to use unsupported feature: '%s'"), name);
+
+  return 1;
+}
+
+
+/* Parse the archive-member reference NAME into the archive and member names.
+   Creates one allocated string containing both names, pointed to by ARNAME_P.
+   MEMNAME_P points to the member.  */
+
+void
+ar_parse_name (const char *name, char **arname_p, char **memname_p)
+{
+  char *p;
+
+  *arname_p = xstrdup (name);
+  p = strchr (*arname_p, '(');
+  /* This is never called unless ar_name() is true so p cannot be NULL.  */
+  if (!p)
+    OS (fatal, NILF, "INTERNAL: ar_parse_name: bad name '%s'", *arname_p);
+  *(p++) = '\0';
+  p[strlen (p) - 1] = '\0';
+  *memname_p = p;
+}
+
+
+/* This function is called by 'ar_scan' to find which member to look at.  */
+
+/* ARGSUSED */
+static intmax_t
+ar_member_date_1 (int desc UNUSED, const char *mem, int truncated,
+                  long int hdrpos UNUSED, long int datapos UNUSED,
+                  long int size UNUSED, intmax_t date,
+                  int uid UNUSED, int gid UNUSED, unsigned int mode UNUSED,
+                  const void *name)
+{
+  return ar_name_equal (name, mem, truncated) ? date : 0;
+}
+
+/* Return the modtime of NAME.  */
+
+time_t
+ar_member_date (const char *name)
+{
+  char *arname;
+  char *memname;
+  intmax_t val;
+
+  ar_parse_name (name, &arname, &memname);
+
+  /* Make sure we know the modtime of the archive itself because we are
+     likely to be called just before commands to remake a member are run,
+     and they will change the archive itself.
+
+     But we must be careful not to enter_file the archive itself if it does
+     not exist, because pattern_search assumes that files found in the data
+     base exist or can be made.  */
+  {
+    struct file *arfile;
+    arfile = lookup_file (arname);
+    if (arfile == 0 && file_exists_p (arname))
+      arfile = enter_file (strcache_add (arname));
+
+    if (arfile != 0)
+      (void) f_mtime (arfile, 0);
+  }
+
+  val = ar_scan (arname, ar_member_date_1, memname);
+
+  free (arname);
+
+  return 0 < val && val <= TYPE_MAXIMUM (time_t) ? val : -1;
+}
+
+/* Set the archive-member NAME's modtime to now.  */
+
+#if MK_OS_VMS
+int
+ar_touch (const char *name)
+{
+  O (error, NILF, _("touch archive member is not available on VMS"));
+  return -1;
+}
+#else
+int
+ar_touch (const char *name)
+{
+  char *arname, *memname;
+  int val;
+
+  ar_parse_name (name, &arname, &memname);
+
+  /* Make sure we know the modtime of the archive itself before we
+     touch the member, since this will change the archive modtime.  */
+  {
+    struct file *arfile;
+    arfile = enter_file (strcache_add (arname));
+    f_mtime (arfile, 0);
+  }
+
+  val = 1;
+  switch (ar_member_touch (arname, memname))
+    {
+    case -1:
+      OS (error, NILF, _("touch: archive '%s' does not exist"), arname);
+      break;
+    case -2:
+      OS (error, NILF, _("touch: '%s' is not a valid archive"), arname);
+      break;
+    case -3:
+      perror_with_name ("touch: ", arname);
+      break;
+    case 1:
+      OSS (error, NILF,
+           _("touch: member '%s' does not exist in '%s'"), memname, arname);
+      break;
+    case 0:
+      val = 0;
+      break;
+    default:
+      OS (error, NILF,
+          _("touch: bad return code from ar_member_touch on '%s'"), name);
+    }
+
+  free (arname);
+
+  return val;
+}
+#endif /* !MK_OS_VMS */
+
+/* State of an 'ar_glob' run, passed to 'ar_glob_match'.  */
+
+/* On VMS, (object) modules in libraries do not have suffixes. That is, to
+   find a match for a pattern, the pattern must not have any suffix. So the
+   suffix of the pattern is saved and the pattern is stripped (ar_glob).
+   If there is a match and the match, which is a module name, is added to
+   the chain, the saved suffix is added back to construct a source filename
+   (ar_glob_match). */
+
+struct ar_glob_state
+  {
+    const char *arname;
+    const char *pattern;
+#if MK_OS_VMS
+    char *suffix;
+#endif
+    size_t size;
+    struct nameseq *chain;
+    unsigned int n;
+  };
+
+/* This function is called by 'ar_scan' to match one archive
+   element against the pattern in STATE.  */
+
+static intmax_t
+ar_glob_match (int desc UNUSED, const char *mem, int truncated UNUSED,
+               long int hdrpos UNUSED, long int datapos UNUSED,
+               long int size UNUSED, intmax_t date UNUSED, int uid UNUSED,
+               int gid UNUSED, unsigned int mode UNUSED, const void *arg)
+{
+  struct ar_glob_state *state = (struct ar_glob_state *)arg;
+
+  if (fnmatch (state->pattern, mem, FNM_PATHNAME|FNM_PERIOD) == 0)
+    {
+      /* We have a match.  Add it to the chain.  */
+      struct nameseq *new = xcalloc (state->size);
+#if MK_OS_VMS
+      if (state->suffix)
+        new->name = strcache_add(
+            concat(5, state->arname, "(", mem, state->suffix, ")"));
+      else
+#endif
+        new->name = strcache_add(concat(4, state->arname, "(", mem, ")"));
+      new->next = state->chain;
+      state->chain = new;
+      ++state->n;
+    }
+
+  return 0;
+}
+
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.  */
+static int
+ar_glob_pattern_p (const char *pattern, int quote)
+{
+  const char *p;
+  int opened = 0;
+
+  for (p = pattern; *p != '\0'; ++p)
+    switch (*p)
+      {
+      case '?':
+      case '*':
+        return 1;
+
+      case '\\':
+        if (quote)
+          ++p;
+        break;
+
+      case '[':
+        opened = 1;
+        break;
+
+      case ']':
+        if (opened)
+          return 1;
+        break;
+      }
+
+  return 0;
+}
+
+/* Glob for MEMBER_PATTERN in archive ARNAME.
+   Return a malloc'd chain of matching elements (or nil if none).  */
+
+struct nameseq *
+ar_glob (const char *arname, const char *member_pattern, size_t size)
+{
+  struct ar_glob_state state;
+  struct nameseq *n;
+  const char **names;
+  unsigned int i;
+#if MK_OS_VMS
+  char *vms_member_pattern;
+#endif
+  if (! ar_glob_pattern_p (member_pattern, 1))
+    return 0;
+
+  /* Scan the archive for matches.
+     ar_glob_match will accumulate them in STATE.chain.  */
+  state.arname = arname;
+  state.pattern = member_pattern;
+#if MK_OS_VMS
+    {
+      /* In a copy of the pattern, find the suffix, save it and  remove it from
+         the pattern */
+      char *lastdot;
+      vms_member_pattern = xstrdup(member_pattern);
+      lastdot = strrchr(vms_member_pattern, '.');
+      state.suffix = lastdot;
+      if (lastdot)
+        {
+          state.suffix = xstrdup(lastdot);
+          *lastdot = 0;
+        }
+      state.pattern = vms_member_pattern;
+    }
+#endif
+  state.size = size;
+  state.chain = 0;
+  state.n = 0;
+  ar_scan (arname, ar_glob_match, &state);
+
+#if MK_OS_VMS
+  /* Deallocate any duplicated string */
+  free(vms_member_pattern);
+  if (state.suffix)
+    {
+      free(state.suffix);
+    }
+#endif
+
+  if (state.chain == 0)
+    return 0;
+
+  /* Now put the names into a vector for sorting.  */
+  names = alloca (state.n * sizeof (const char *));
+  i = 0;
+  for (n = state.chain; n != 0; n = n->next)
+    names[i++] = n->name;
+
+  /* Sort them alphabetically.  */
+  /* MSVC erroneously warns without a cast here.  */
+  qsort ((void *)names, i, sizeof (*names), alpha_compare);
+
+  /* Put them back into the chain in the sorted order.  */
+  i = 0;
+  for (n = state.chain; n != 0; n = n->next)
+    n->name = names[i++];
+
+  return state.chain;
+}
+
+#endif  /* Not NO_ARCHIVES.  */

src/commands.c

@@ -0,0 +1,704 @@
+/* Command processing for GNU Make.
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "os.h"
+#include "dep.h"
+#include "variable.h"
+#include "job.h"
+#include "commands.h"
+#if MK_OS_W32
+#include <windows.h>
+#include "w32err.h"
+#endif
+
+#if MK_OS_VMS
+# define FILE_LIST_SEPARATOR (vms_comma_separator ? ',' : ' ')
+#else
+# define FILE_LIST_SEPARATOR ' '
+#endif
+
+
+static unsigned long
+dep_hash_1 (const void *key)
+{
+  const struct dep *d = key;
+  return_STRING_HASH_1 (dep_name (d));
+}
+
+static unsigned long
+dep_hash_2 (const void *key)
+{
+  const struct dep *d = key;
+  return_STRING_HASH_2 (dep_name (d));
+}
+
+static int
+dep_hash_cmp (const void *x, const void *y)
+{
+  const struct dep *dx = x;
+  const struct dep *dy = y;
+  return strcmp (dep_name (dx), dep_name (dy));
+}
+
+/* Set FILE's automatic variables up.
+ * Use STEM to set $*.
+ * If STEM is 0, then set FILE->STEM and $* to the target name with any
+ * suffix in the .SUFFIXES list stripped off.  */
+
+void
+set_file_variables (struct file *file, const char *stem)
+{
+  struct dep *d;
+  const char *at, *percent, *star, *less;
+
+#ifndef NO_ARCHIVES
+  /* If the target is an archive member 'lib(member)',
+     then $@ is 'lib' and $% is 'member'.  */
+
+  if (ar_name (file->name))
+    {
+      size_t len;
+      const char *cp;
+      char *p;
+
+      cp = strchr (file->name, '(');
+      p = alloca (cp - file->name + 1);
+      memcpy (p, file->name, cp - file->name);
+      p[cp - file->name] = '\0';
+      at = p;
+      len = strlen (cp + 1);
+      p = alloca (len);
+      memcpy (p, cp + 1, len - 1);
+      p[len - 1] = '\0';
+      percent = p;
+    }
+  else
+#endif  /* NO_ARCHIVES.  */
+    {
+      at = file->name;
+      percent = "";
+    }
+
+  /* $* is the stem from an implicit or static pattern rule.  */
+  if (stem == 0)
+    {
+      /* In Unix make, $* is set to the target name with
+         any suffix in the .SUFFIXES list stripped off for
+         explicit rules.  We store this in the 'stem' member.  */
+      const char *name;
+      size_t len;
+
+#ifndef NO_ARCHIVES
+      if (ar_name (file->name))
+        {
+          name = strchr (file->name, '(') + 1;
+          len = strlen (name) - 1;
+        }
+      else
+#endif
+        {
+          name = file->name;
+          len = strlen (name);
+        }
+
+      for (d = enter_file (strcache_add (".SUFFIXES"))->deps; d ; d = d->next)
+        {
+          const char *dn = dep_name (d);
+          size_t slen = strlen (dn);
+          if (len > slen && memcmp (dn, name + (len - slen), slen) == 0)
+            {
+              file->stem = stem = strcache_add_len (name, len - slen);
+              break;
+            }
+        }
+      if (d == 0)
+        file->stem = stem = "";
+    }
+  star = stem;
+
+  /* $< is the first not order-only dependency.  */
+  less = "";
+  for (d = file->deps; d != 0; d = d->next)
+    if (!d->ignore_mtime && !d->ignore_automatic_vars && !d->need_2nd_expansion)
+      {
+        less = dep_name (d);
+        break;
+      }
+
+  if (file->cmds != 0 && file->cmds == default_file->cmds)
+    /* This file got its commands from .DEFAULT.
+       In this case $< is the same as $@.  */
+    less = at;
+
+#define DEFINE_VARIABLE(name, len, value) \
+  (void) define_variable_for_file (name,len,value,o_automatic,0,file)
+
+  /* Define the variables.  */
+
+  DEFINE_VARIABLE ("<", 1, less);
+  DEFINE_VARIABLE ("*", 1, star);
+  DEFINE_VARIABLE ("@", 1, at);
+  DEFINE_VARIABLE ("%", 1, percent);
+
+  /* Compute the values for $^, $+, $?, and $|.  */
+
+  {
+    static char *plus_value=0, *bar_value=0, *qmark_value=0;
+    static size_t plus_max=0, bar_max=0, qmark_max=0;
+
+    size_t qmark_len, plus_len, bar_len;
+    char *cp;
+    char *caret_value;
+    char *qp;
+    char *bp;
+    size_t len;
+
+    struct hash_table dep_hash;
+    void **slot;
+
+    /* Compute first the value for $+, which is supposed to contain
+       duplicate dependencies as they were listed in the makefile.  */
+
+    plus_len = 0;
+    bar_len = 0;
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        if (!d->need_2nd_expansion && !d->ignore_automatic_vars)
+          {
+            if (d->ignore_mtime)
+              bar_len += strlen (dep_name (d)) + 1;
+            else
+              plus_len += strlen (dep_name (d)) + 1;
+          }
+      }
+
+    if (bar_len == 0)
+      bar_len++;
+
+    if (plus_len == 0)
+      plus_len++;
+
+    if (plus_len > plus_max)
+      plus_value = xrealloc (plus_value, plus_max = plus_len);
+
+    cp = plus_value;
+
+    qmark_len = plus_len + 1;   /* Will be this or less.  */
+    for (d = file->deps; d != 0; d = d->next)
+      if (! d->ignore_mtime && ! d->need_2nd_expansion && ! d->ignore_automatic_vars)
+        {
+          const char *c = dep_name (d);
+
+#ifndef NO_ARCHIVES
+          if (ar_name (c))
+            {
+              c = strchr (c, '(') + 1;
+              len = strlen (c) - 1;
+            }
+          else
+#endif
+            len = strlen (c);
+
+          cp = mempcpy (cp, c, len);
+          *cp++ = FILE_LIST_SEPARATOR;
+          if (! (d->changed || always_make_flag))
+            qmark_len -= len + 1;       /* Don't space in $? for this one.  */
+        }
+
+    /* Kill the last space and define the variable.  */
+
+    cp[cp > plus_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("+", 1, plus_value);
+
+    /* Compute the values for $^, $?, and $|.  */
+
+    cp = caret_value = plus_value; /* Reuse the buffer; it's big enough.  */
+
+    if (qmark_len > qmark_max)
+      qmark_value = xrealloc (qmark_value, qmark_max = qmark_len);
+    qp = qmark_value;
+
+    if (bar_len > bar_max)
+      bar_value = xrealloc (bar_value, bar_max = bar_len);
+    bp = bar_value;
+
+    /* Make sure that no dependencies are repeated in $^, $?, and $|.  It
+       would be natural to combine the next two loops but we can't do it
+       because of a situation where we have two dep entries, the first
+       is order-only and the second is normal (see below).  */
+
+    hash_init (&dep_hash, 500, dep_hash_1, dep_hash_2, dep_hash_cmp);
+
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        if (d->need_2nd_expansion || d->ignore_automatic_vars)
+          continue;
+
+        slot = hash_find_slot (&dep_hash, d);
+        if (HASH_VACANT (*slot))
+          hash_insert_at (&dep_hash, d, slot);
+        else
+          {
+            /* Check if the two prerequisites have different ignore_mtime.
+               If so then we need to "upgrade" one that is order-only.  */
+
+            struct dep* hd = (struct dep*) *slot;
+
+            if (d->ignore_mtime != hd->ignore_mtime)
+              d->ignore_mtime = hd->ignore_mtime = 0;
+          }
+      }
+
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        const char *c;
+
+        if (d->need_2nd_expansion || d->ignore_automatic_vars || hash_find_item (&dep_hash, d) != d)
+          continue;
+
+        c = dep_name (d);
+#ifndef NO_ARCHIVES
+        if (ar_name (c))
+          {
+            c = strchr (c, '(') + 1;
+            len = strlen (c) - 1;
+          }
+        else
+#endif
+          len = strlen (c);
+
+        if (d->ignore_mtime)
+          {
+            bp = mempcpy (bp, c, len);
+            *bp++ = FILE_LIST_SEPARATOR;
+          }
+        else
+          {
+            cp = mempcpy (cp, c, len);
+            *cp++ = FILE_LIST_SEPARATOR;
+            if (d->changed || always_make_flag)
+              {
+                qp = mempcpy (qp, c, len);
+                *qp++ = FILE_LIST_SEPARATOR;
+              }
+          }
+      }
+
+    hash_free (&dep_hash, 0);
+
+    /* Kill the last spaces and define the variables.  */
+
+    cp[cp > caret_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("^", 1, caret_value);
+
+    qp[qp > qmark_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("?", 1, qmark_value);
+
+    bp[bp > bar_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("|", 1, bar_value);
+  }
+
+#undef DEFINE_VARIABLE
+}
+
+/* Chop CMDS up into individual command lines if necessary.
+   Also set the 'lines_flags' and 'any_recurse' members.  */
+
+void
+chop_commands (struct commands *cmds)
+{
+  unsigned short nlines;
+  unsigned short i;
+  char **lines;
+
+  /* If we don't have any commands, or we already parsed them, never mind.  */
+  if (!cmds || cmds->command_lines != NULL)
+    return;
+
+  /* Chop CMDS->commands up into lines in CMDS->command_lines.  */
+
+  if (one_shell)
+    {
+      size_t l = strlen (cmds->commands);
+
+      nlines = 1;
+      lines = xmalloc (nlines * sizeof (char *));
+      lines[0] = xstrdup (cmds->commands);
+
+      /* Strip the trailing newline.  */
+      if (l > 0 && lines[0][l-1] == '\n')
+        lines[0][l-1] = '\0';
+    }
+  else
+    {
+      const char *p = cmds->commands;
+      size_t max = 5;
+
+      nlines = 0;
+      lines = xmalloc (max * sizeof (char *));
+      while (*p != '\0')
+        {
+          const char *end = p;
+        find_end:;
+          end = strchr (end, '\n');
+          if (end == NULL)
+            end = p + strlen (p);
+          else if (end > p && end[-1] == '\\')
+            {
+              int backslash = 1;
+              if (end > p + 1)
+                {
+                  const char *b;
+                  for (b = end - 2; b >= p && *b == '\\'; --b)
+                    backslash = !backslash;
+                }
+              if (backslash)
+                {
+                  ++end;
+                  goto find_end;
+                }
+            }
+
+          if (nlines == USHRT_MAX)
+            ON (fatal, &cmds->fileinfo,
+                _("recipe has too many lines (limit %hu)"), nlines);
+
+          if (nlines == max)
+            {
+              max += 2;
+              lines = xrealloc (lines, max * sizeof (char *));
+            }
+
+          lines[nlines++] = xstrndup (p, (size_t) (end - p));
+          p = end;
+          if (*p != '\0')
+            ++p;
+        }
+    }
+
+  /* Finally, set the corresponding CMDS->lines_flags elements and the
+     CMDS->any_recurse flag.  */
+
+  cmds->ncommand_lines = nlines;
+  cmds->command_lines = lines;
+
+  cmds->any_recurse = 0;
+  cmds->lines_flags = xmalloc (nlines);
+
+  for (i = 0; i < nlines; ++i)
+    {
+      unsigned char flags = 0;
+      const char *p = lines[i];
+
+      while (ISBLANK (*p) || *p == '-' || *p == '@' || *p == '+')
+        switch (*(p++))
+          {
+          case '+':
+            flags |= COMMANDS_RECURSE;
+            break;
+          case '@':
+            flags |= COMMANDS_SILENT;
+            break;
+          case '-':
+            flags |= COMMANDS_NOERROR;
+            break;
+          }
+
+      /* If no explicit '+' was given, look for MAKE variable references.  */
+      if (! ANY_SET (flags, COMMANDS_RECURSE)
+          && (strstr (p, "$(MAKE)") != 0 || strstr (p, "${MAKE}") != 0))
+        flags |= COMMANDS_RECURSE;
+
+      cmds->lines_flags[i] = flags;
+      cmds->any_recurse |= ANY_SET (flags, COMMANDS_RECURSE) ? 1 : 0;
+    }
+}
+
+/* Execute the commands to remake FILE.  If they are currently executing,
+   return or have already finished executing, just return.  Otherwise,
+   fork off a child process to run the first command line in the sequence.  */
+
+void
+execute_file_commands (struct file *file)
+{
+  const char *p;
+
+  /* Don't go through all the preparations if
+     the commands are nothing but whitespace.  */
+
+  for (p = file->cmds->commands; *p != '\0'; ++p)
+    if (!ISSPACE (*p) && *p != '-' && *p != '@' && *p != '+')
+      break;
+  if (*p == '\0')
+    {
+      /* If there are no commands, assume everything worked.  */
+      set_command_state (file, cs_running);
+      file->update_status = us_success;
+      notice_finished_file (file);
+      return;
+    }
+
+  /* First set the automatic variables according to this file.  */
+
+  initialize_file_variables (file, 0);
+
+  set_file_variables (file, file->stem);
+
+  /* Some systems don't support overwriting a loaded object so if this one
+     unload it before remaking.  Keep its name in .LOADED: it will be rebuilt
+     and loaded again.  If rebuilding or loading again fail, then we'll exit
+     anyway and it won't matter.  */
+  if (file->loaded && unload_file (file->name) == 0)
+    {
+      file->loaded = 0;
+      file->unloaded = 1;
+    }
+
+  /* Start the commands running.  */
+  new_job (file);
+}
+
+/* This is set while we are inside fatal_error_signal,
+   so things can avoid nonreentrant operations.  */
+
+volatile sig_atomic_t handling_fatal_signal = 0;
+
+/* Handle fatal signals.  */
+
+void
+fatal_error_signal (int sig)
+{
+#if MK_OS_DOS
+  extern int dos_status, dos_command_running;
+
+  if (dos_command_running)
+    {
+      /* That was the child who got the signal, not us.  */
+      dos_status |= (sig << 8);
+      return;
+    }
+  remove_intermediates (1);
+  exit (EXIT_FAILURE);
+#else /* not MK_OS_DOS */
+#if MK_OS_W32
+  extern HANDLE main_thread;
+
+  /* Windows creates a separate thread for handling Ctrl+C, so we need
+     to suspend the main thread, or else we will have race conditions
+     when both threads call reap_children.  */
+  if (main_thread)
+    {
+      DWORD susp_count = SuspendThread (main_thread);
+
+      if (susp_count != 0)
+        fprintf (stderr, "SuspendThread: suspend count = %lu\n", susp_count);
+      else if (susp_count == (DWORD)-1)
+        {
+          DWORD ierr = GetLastError ();
+
+          fprintf (stderr, "SuspendThread: error %lu: %s\n",
+                   ierr, map_windows32_error_to_string (ierr));
+        }
+    }
+#endif
+  handling_fatal_signal = 1;
+
+  /* Set the handling for this signal to the default.
+     It is blocked now while we run this handler.  */
+  signal (sig, SIG_DFL);
+
+  temp_stdin_unlink ();
+  osync_clear ();
+  jobserver_clear ();
+
+  /* A termination signal won't be sent to the entire
+     process group, but it means we want to kill the children.  */
+
+  if (sig == SIGTERM)
+    {
+      struct child *c;
+      for (c = children; c != 0; c = c->next)
+        if (!c->remote && c->pid > 0)
+          (void) kill (c->pid, SIGTERM);
+    }
+
+  /* If we got a signal that means the user
+     wanted to kill make, remove pending targets.  */
+
+  if (sig == SIGTERM || sig == SIGINT
+#ifdef SIGHUP
+    || sig == SIGHUP
+#endif
+#ifdef SIGQUIT
+    || sig == SIGQUIT
+#endif
+    )
+    {
+      struct child *c;
+
+      /* Remote children won't automatically get signals sent
+         to the process group, so we must send them.  */
+      for (c = children; c != 0; c = c->next)
+        if (c->remote && c->pid > 0)
+          (void) remote_kill (c->pid, sig);
+
+      for (c = children; c != 0; c = c->next)
+        delete_child_targets (c);
+
+      /* Clean up the children.  We don't just use the call below because
+         we don't want to print the "Waiting for children" message.  */
+      while (job_slots_used > 0)
+        reap_children (1, 0);
+    }
+  else
+    /* Wait for our children to die.  */
+    while (job_slots_used > 0)
+      reap_children (1, 1);
+
+  /* Delete any non-precious intermediate files that were made.  */
+
+  remove_intermediates (1);
+
+#ifdef SIGQUIT
+  if (sig == SIGQUIT)
+    /* We don't want to send ourselves SIGQUIT, because it will
+       cause a core dump.  Just exit instead.  */
+    exit (MAKE_TROUBLE);
+#endif
+
+#if MK_OS_W32
+  if (main_thread)
+    CloseHandle (main_thread);
+  /* Cannot call W32_kill with a pid (it needs a handle).  The exit
+     status of 130 emulates what happens in Bash.  */
+  exit (130);
+#else
+  /* Signal the same code; this time it will really be fatal.  The signal
+     will be unblocked when we return and arrive then to kill us.  */
+  if (kill (make_pid (), sig) < 0)
+    pfatal_with_name ("kill");
+#endif /* not MK_OS_W32 */
+#endif /* not MK_OS_DOS  */
+}
+
+/* Delete FILE unless it's precious or not actually a file (phony),
+   and it has changed on disk since we last stat'd it.  */
+
+static void
+delete_target (struct file *file, const char *on_behalf_of)
+{
+  struct stat st;
+  int e;
+
+  if (file->precious || file->phony)
+    return;
+
+#ifndef NO_ARCHIVES
+  if (ar_name (file->name))
+    {
+      time_t file_date = (file->last_mtime == NONEXISTENT_MTIME
+                          ? (time_t) -1
+                          : (time_t) FILE_TIMESTAMP_S (file->last_mtime));
+      if (ar_member_date (file->name) != file_date)
+        {
+          if (on_behalf_of)
+            OSS (error, NILF,
+                 _("*** [%s] archive member '%s' may be bogus; not deleted"),
+                 on_behalf_of, file->name);
+          else
+            OS (error, NILF,
+                _("*** archive member '%s' may be bogus; not deleted"),
+                file->name);
+        }
+      return;
+    }
+#endif
+
+  EINTRLOOP (e, stat (file->name, &st));
+  if (e == 0
+      && S_ISREG (st.st_mode)
+      && FILE_TIMESTAMP_STAT_MODTIME (file->name, st) != file->last_mtime)
+    {
+      if (on_behalf_of)
+        OSS (error, NILF,
+             _("*** [%s] deleting file '%s'"), on_behalf_of, file->name);
+      else
+        OS (error, NILF, _("*** deleting file '%s'"), file->name);
+      if (unlink (file->name) < 0
+          && errno != ENOENT)   /* It disappeared; so what.  */
+        perror_with_name ("unlink: ", file->name);
+    }
+}
+
+
+/* Delete all non-precious targets of CHILD unless they were already deleted.
+   Set the flag in CHILD to say they've been deleted.  */
+
+void
+delete_child_targets (struct child *child)
+{
+  struct dep *d;
+
+  if (child->deleted || child->pid < 0)
+    return;
+
+  /* Delete the target file if it changed.  */
+  delete_target (child->file, NULL);
+
+  /* Also remove any non-precious targets listed in the 'also_make' member.  */
+  for (d = child->file->also_make; d != 0; d = d->next)
+    delete_target (d->file, child->file->name);
+
+  child->deleted = 1;
+}
+
+/* Print out the commands in CMDS.  */
+
+void
+print_commands (const struct commands *cmds)
+{
+  const char *s;
+
+  fputs (_("#  recipe to execute"), stdout);
+
+  if (cmds->fileinfo.filenm == 0)
+    puts (_(" (built-in):"));
+  else
+    printf (_(" (from '%s', line %lu):\n"),
+            cmds->fileinfo.filenm, cmds->fileinfo.lineno);
+
+  s = cmds->commands;
+  while (*s != '\0')
+    {
+      const char *end;
+      int bs;
+
+      /* Print one full logical recipe line: find a non-escaped newline.  */
+      for (end = s, bs = 0; *end != '\0'; ++end)
+        {
+          if (*end == '\n' && !bs)
+            break;
+
+          bs = *end == '\\' ? !bs : 0;
+        }
+
+      printf ("%c%.*s\n", cmd_prefix, (int) (end - s), s);
+
+      s = end + (end[0] == '\n');
+    }
+}

src/commands.h

@@ -0,0 +1,45 @@
+/* Definition of data structures describing shell commands for GNU Make.
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Structure that gives the commands to make a file
+   and information about where these commands came from.  */
+
+struct commands
+  {
+    floc fileinfo;              /* Where commands were defined.  */
+    char *commands;             /* Commands text.  */
+    char **command_lines;       /* Commands chopped up into lines.  */
+    unsigned char *lines_flags; /* One set of flag bits for each line.  */
+    unsigned short ncommand_lines;/* Number of command lines.  */
+    char recipe_prefix;         /* Recipe prefix for this command set.  */
+    unsigned int any_recurse:1; /* Nonzero if any 'lines_flags' elt has */
+                                /* the COMMANDS_RECURSE bit set.  */
+  };
+
+/* Bits in 'lines_flags'.  */
+#define COMMANDS_RECURSE        1 /* Recurses: + or $(MAKE).  */
+#define COMMANDS_SILENT         2 /* Silent: @.  */
+#define COMMANDS_NOERROR        4 /* No errors: -.  */
+
+struct file;
+struct child;
+
+void fatal_error_signal (int sig);
+void execute_file_commands (struct file *file);
+void print_commands (const struct commands *cmds);
+void delete_child_targets (struct child *child);
+void chop_commands (struct commands *cmds);
+void set_file_variables (struct file *file, const char *stem);

src/config.h-vms

@@ -0,0 +1,428 @@
+/* config.h-vms. Generated by hand by Klaus Kämpf <kkaempf@rmi.de>      -*-C-*-
+
+Copyright (C) 1996-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "mkconfig.h"
+
+#define MK_OS_VMS 1
+
+/* Pull in types.h here to get __CRTL_VER defined for old versions of the
+   compiler which don't define it. */
+#ifdef __DECC
+# include <types.h>
+#endif
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* #undef _ALL_SOURCE */
+#endif
+
+/* Define to 1 if NLS is requested.  */
+/* #undef ENABLE_NLS */
+
+/* Define as 1 if you have dcgettext.  */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define as 1 if you have gettext and don't want to use GNU gettext.  */
+/* #undef HAVE_GETTEXT */
+
+/* Embed GNU Guile support */
+/* #undef HAVE_GUILE */
+
+/* Define to 1 if your locale.h file contains LC_MESSAGES.  */
+/* #undef HAVE_LC_MESSAGES */
+
+/* Define to the installation directory for locales.  */
+#define LOCALEDIR ""
+
+/* Define as 1 if you have the stpcpy function.  */
+/* #undef HAVE_STPCPY */
+
+/* Define to 1 if the closedir function returns void instead of int.  */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to empty if the keyword does not work.  */
+/* #undef const */
+
+/* Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP systems.
+   This function is required for alloca.c support on those systems.  */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define for DGUX with <sys/dg_sys_info.h>.  */
+/* #undef DGUX */
+
+/* Define to the widest signed integer type if <stdint.h> and <inttypes.h> do
+   not define. */
+#define intmax_t unsigned long
+
+/* Define to 'unsigned long' or 'unsigned long long'
+   if <inttypes.h> doesn't define.  */
+#define uintmax_t unsigned long
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+/* #undef gid_t */
+
+/* Define to 1 if you have alloca, as a function or macro.  */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).  */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the declaration of 'getloadavg'. */
+/* #undef HAVE_DECL_GETLOADAVG */
+
+/* Define to 1 if you have the fdopen function.  */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if your system has a working fnmatch function.  */
+/* #undef HAVE_FNMATCH */
+
+/* Define to 1 if you have the getmntent function.  */
+/* #undef HAVE_GETMNTENT */
+
+/* Define to 1 if the 'long double' type works.  */
+/* #undef HAVE_LONG_DOUBLE */
+
+/* Define to 1 if you support file names longer than 14 characters.  */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have a working 'mmap' system call.  */
+/* #undef HAVE_MMAP */
+
+/* Define to 1 if system calls automatically restart after interruption
+   by a signal.  */
+/* #undef HAVE_RESTARTABLE_SYSCALLS */
+
+/* Define to 1 if your struct stat has st_blksize.  */
+/* #undef HAVE_ST_BLKSIZE */
+
+/* Define to 1 if your struct stat has st_blocks.  */
+/* #undef HAVE_ST_BLOCKS */
+
+/* Define to 1 if you have the strcoll function and it is properly defined.  */
+/* #undef HAVE_STRCOLL */
+
+/* Define to 1 if you have the strncasecmp' function. */
+#if __CRTL_VER >= 70000000
+#define HAVE_STRNCASECMP 1
+#endif
+
+/* Define to 1 if your struct stat has st_rdev.  */
+/* #undef HAVE_ST_RDEV */
+
+/* Define to 1 if you have the strftime function.  */
+/* #undef HAVE_STRFTIME */
+
+/* Define to 1 if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if your struct tm has tm_zone.  */
+/* #undef HAVE_TM_ZONE */
+
+/* Define to 1 if you don't have tm_zone but do have the external array
+   tzname.  */
+/* #undef HAVE_TZNAME */
+
+/* Define to 1 if you have <unistd.h>.  */
+#ifdef __DECC
+#define HAVE_UNISTD_H 1
+#endif
+
+/* Define to 1 if utime(file, NULL) sets file's timestamp to the present.  */
+/* #undef HAVE_UTIME_NULL */
+
+/* Define to 1 if you have the wait3 system call.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if on MINIX.  */
+/* #undef _MINIX */
+
+/* Define to 1 if your struct nlist has an n_un member.  */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if you have <nlist.h>.  */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together.  */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+/* I assume types.h is available for all 5.0 cc/cxx compilers */
+#if __DECC_VER < 50090000
+#define pid_t int
+#endif
+
+/* Define to 1 if the system does not provide POSIX.1 features except
+   with this defined.  */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for stat and other things to work.  */
+/* #undef _POSIX_SOURCE */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown
+ */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the 'S_IS*' macros in <sys/stat.h> do not work properly.  */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files.  */
+/* #undef STDC_HEADERS */
+
+/* Define on System V Release 4.  */
+/* #undef SVR4 */
+
+/* Define to 1 if 'sys_siglist' is declared by <signal.h>.  */
+/* #undef SYS_SIGLIST_DECLARED */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#if __DECC_VER < 50090000
+#define uid_t int
+#endif
+
+/* Define for Encore UMAX.  */
+/* #undef UMAX */
+
+/* Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+   instead of <sys/cpustats.h>.  */
+/* #undef UMAX4_3 */
+
+/* Define to the name of the SCCS 'get' command.  */
+/* #undef SCCS_GET */
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option.  */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define this to enable job server support in GNU Make.  */
+/* #undef MAKE_JOBSERVER */
+
+/* Define to be the nanoseconds member of struct stat's st_mtim,
+   if it exists.  */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 if the C library defines the variable 'sys_siglist'.  */
+/* #undefine HAVE_SYS_SIGLIST */
+
+/* Define to 1 if the C library defines the variable '_sys_siglist'.  */
+/* #undef HAVE__SYS_SIGLIST */
+
+/* Define to 1 if you have the 'union wait' type in <sys/wait.h>.  */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the dup2 function.  */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the getcwd function.  */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the getgroups function.  */
+/* #undef HAVE_GETGROUPS */
+
+/* Define to 1 if you have the gethostbyname function.  */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the gethostname function.  */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the memmove function.  */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the 'mkfifo' function.  */
+/* #undef HAVE_MKFIFO */
+
+/* Define to 1 if you have the mktemp function.  */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the psignal function.  */
+/* #undef HAVE_PSIGNAL */
+
+/* Define to 1 if you have the pstat_getdynamic function.  */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the setegid function.  */
+/* #undef HAVE_SETEGID */
+
+/* Define to 1 if you have the seteuid function.  */
+/* #undef HAVE_SETEUID */
+
+/* Define to 1 if you have the setlinebuf function.  */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define to 1 if you have the setregid function.  */
+/* #undefine HAVE_SETREGID */
+
+/* Define to 1 if you have the setreuid function.  */
+/* #define HAVE_SETREUID */
+
+/* Define to 1 if you have the sigsetmask function.  */
+#define HAVE_SIGSETMASK 1
+
+/* Define to 1 if you have the socket function.  */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the strcasecmp function.  */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function.  */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the stricmp function.  */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the strsignal function.  */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define to 1 if you have the `strtoll' function. */
+#define HAVE_STRTOLL 1
+
+/* Define to 1 if you have the wait3 function.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if you have the waitpid function.  */
+/* #undef HAVE_WAITPID */
+
+/* Define to 1 if you have the <dirent.h> header file.  */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the <fcntl.h> header file.  */
+#ifdef __DECC
+#define HAVE_FCNTL_H 1
+#endif
+
+/* Define to 1 if you have the <limits.h> header file.  */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <mach/mach.h> header file.  */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file.  */
+/* #undef HAVE_MEMORY_H */
+
+/* Define to 1 if you have the `mempcpy' function.  */
+/* #undef HAVE_MEMPCPY */
+
+/* Define to 1 if you have the <ndir.h> header file.  */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <stdlib.h> header file.  */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <string.h> header file.  */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/dir.h> header file.  */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file.  */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file.  */
+/* #undef HAVE_SYS_PARAM_H */
+
+/* Define to 1 if you have the <sys/wait.h> header file.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if you have the dgc library (-ldgc).  */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the kstat library (-lkstat).  */
+/* #undef HAVE_LIBKSTAT *
+
+/* Define to 1 if you have the sun library (-lsun).  */
+/* #undef HAVE_LIBSUN */
+
+/* Define to 1 if you have the `isatty' function. */
+/* #undef HAVE_ISATTY */
+
+/* Define to 1 if you have the `ttyname' function. */
+/* #undef HAVE_TTYNAME */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define for case insensitve filenames */
+#define HAVE_CASE_INSENSITIVE_FS 1
+
+/* VMS specific, define it if you want to use case sensitive targets */
+/* #undef WANT_CASE_SENSITIVE_TARGETS */
+
+/* VMS specific, V7.0 has opendir() and friends, so it's undefined */
+/* If you want to use non-VMS code for opendir() etc. on V7.0 and greater
+   define the first or both macros AND change the compile command to get the
+   non-VMS versions linked: (prefix=(all,except=(opendir,...  */
+/* #undef HAVE_VMSDIR_H */
+/* #undef _DIRENT_HAVE_D_NAMLEN */
+
+/* On older systems without 7.0 backport of CRTL use non-VMS code for opendir() etc. */
+#if __CRTL_VER < 70000000
+# define HAVE_VMSDIR_H 1
+#endif
+
+#if defined(HAVE_VMSDIR_H) && defined(HAVE_DIRENT_H)
+#undef HAVE_DIRENT_H
+#endif
+
+#define HAVE_STDLIB_H 1
+#define INCLUDEDIR "sys$sysroot:[syslib]"
+#define LIBDIR "sys$sysroot:[syslib]"
+
+/* Don't use RTL functions of OpenVMS */
+#ifdef __DECC
+#include <stdio.h>
+#include <unistd.h>
+#define getopt   gnu_getopt
+#define optarg   gnu_optarg
+#define optopt   gnu_optopt
+#define optind   gnu_optind
+#define opterr   gnu_opterr
+#define globfree gnu_globfree
+#define glob     gnu_glob
+#endif
+
+/* Define if using alloca.c.  */
+/* #undef C_ALLOCA */
+/* maybe this should be placed into makeint.h */
+#if     defined(__VAX) && defined(__DECC)
+#define alloca(n)       __ALLOCA(n)
+#endif
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+/* #  undef WORDS_BIGENDIAN */
+
+/* Output sync sypport */
+#define NO_OUTPUT_SYNC
+
+/* Define to 1 to write even short single-line actions into a VMS/DCL command
+   file; this also enables exporting make environment variables into the
+   (sub-)process, which executes the action.
+   The usual make rules apply whether a shell variable - here a DCL symbol or
+   VMS logical [see CRTL getenv()] - is added to the make environment and
+   is exported. */
+#define USE_DCL_COM_FILE 1
+
+/* Build host information. */
+#define MAKE_HOST "VMS"
+
+/* Include customized declarations.  */
+#include "../src/mkcustom.h"

src/config.h.W32

@@ -0,0 +1,629 @@
+/* config.h.W32 -- hand-massaged config.h file for Windows builds       -*-C-*-
+
+Copyright (C) 1996-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "mkconfig.h"
+
+/* Build for the Windows32 API. */
+#define MK_OS_W32 1
+
+/* Suppress some Visual C++ warnings.
+   Maybe after the code cleanup for ISO C we can remove some/all of these.  */
+#if _MSC_VER > 1000
+# pragma warning(disable:4100) /* unreferenced formal parameter */
+# pragma warning(disable:4130) /* logical operation on address of string constant */
+# pragma warning(disable:4131) /* uses old-style declarator */
+# pragma warning(disable:4702) /* unreachable code */
+# define _CRT_SECURE_NO_WARNINGS  1 /* function or variable may be unsafe */
+# define _CRT_NONSTDC_NO_WARNINGS 1 /* functions w/o a leading underscore */
+#endif
+
+/* Define to 1 if the 'closedir' function returns void instead of 'int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to 1 if using 'alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if you have 'alloca' after including <alloca.h>, a header that
+   may be supplied by this distribution. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if <alloca.h> works. */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the 'atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the declaration of 'bsd_signal', and to 0 if you
+   don't. */
+#define HAVE_DECL_BSD_SIGNAL 0
+
+/* Define to 1 if you have the declaration of `dlerror', and to 0 if you
+   don't. */
+#define HAVE_DECL_DLERROR 0
+
+/* Define to 1 if you have the declaration of `dlopen', and to 0 if you don't.
+   */
+#define HAVE_DECL_DLOPEN 0
+
+/* Define to 1 if you have the declaration of `dlsym', and to 0 if you don't.
+   */
+#define HAVE_DECL_DLSYM 0
+
+/* Define to 1 if you have the declaration of 'getloadavg'. */
+/* #undef HAVE_DECL_GETLOADAVG */
+
+/* Define to 1 if you have the declaration of 'sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of '_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of '__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines 'DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the <direct.h> header file, and it defines getcwd()
+   and chdir().
+   */
+#if (defined(_MSC_VER) || defined(__BORLANDC__) || defined(__TINYC__)) && !defined(__INTERIX)
+# define HAVE_DIRECT_H 1
+#endif
+
+/* Support DOS-style pathnames. */
+#define HAVE_DOS_PATHS 1
+
+/* Define to 1 if you have the 'dup' function. */
+#define HAVE_DUP 1
+
+/* Define to 1 if you have the 'dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the 'fdopen' function. */
+#ifdef __MINGW32__
+#define HAVE_FDOPEN 1
+#endif
+
+/* Define to 1 if you have the `fork' function. */
+/* #undef HAVE_FORK */
+
+/* Define to 1 if you have the 'getcwd' function.  */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the 'getgroups' function. */
+/* #undef HAVE_GETGROUPS */
+
+/* Define to 1 if you have the 'gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the 'gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the 'getrlimit' function. */
+/* #undef HAVE_GETRLIMIT */
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have a standard gettimeofday function */
+#ifdef __MINGW32__
+#define HAVE_GETTIMEOFDAY 1
+#endif
+
+/* Embed GNU Guile support.  Windows build sets this on the
+   compilation command line.  */
+/* #undef HAVE_GUILE */
+
+/* Define if you have the iconv() function. */
+/* #undef HAVE_ICONV */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_INTTYPES_H 1
+#endif
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the 'dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the 'kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the `perfstat' library (-lperfstat). */
+/* #undef HAVE_LIBPERFSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+/* #undef HAVE_LOCALE_H */
+
+/* Define to 1 if the system has the type 'long long int'. */
+#define HAVE_LONG_LONG_INT 1
+
+/* Define to 1 if you have the 'lstat' function. */
+/* #undef HAVE_LSTAT */
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `mempcpy' function.  */
+/* #undef HAVE_MEMPCPY */
+
+/* Define to 1 if you have the `memrchr' function. */
+/* #undef HAVE_MEMRCHR */
+
+/* Define to 1 if you have the <minix/config.h> header file. */
+/* #undef HAVE_MINIX_CONFIG_H */
+
+/* Define to 1 if you have the 'mkfifo' function. */
+/* #undef HAVE_MKFIFO */
+
+/* Define to 1 if you have the 'mkstemp' function. */
+/* #undef HAVE_MKSTEMP */
+
+/* Define to 1 if you have the `mkstemp' function. */
+/* #undef HAVE_MKSTEMP */
+
+/* Define to 1 if you have the 'mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines 'DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the 'pipe' function. */
+/* #undef HAVE_PIPE */
+
+/* Define to 1 if you have the `posix_spawn' function. */
+/* #undef HAVE_POSIX_SPAWN */
+
+/* Define to 1 if you have the `posix_spawnattr_setsigmask' function. */
+/* #undef HAVE_POSIX_SPAWNATTR_SETSIGMASK */
+
+/* Define to 1 if you have the `pselect' function. */
+/* #undef HAVE_PSELECT */
+
+/* Define to 1 if you have the 'pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the 'readlink' function. */
+/* #undef HAVE_READLINK */
+
+/* Define to 1 if you have the 'realpath' function. */
+/* #undef HAVE_REALPATH */
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+/* #undef HAVE_SA_RESTART */
+
+/* Define to 1 if you have the 'setegid' function. */
+/* #undef HAVE_SETEGID */
+
+/* Define to 1 if you have the 'seteuid' function. */
+/* #undef HAVE_SETEUID */
+
+/* Define to 1 if you have the 'setlinebuf' function. */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define to 1 if you have the 'setregid' function. */
+/* #undef HAVE_SETREGID */
+
+/* Define to 1 if you have the 'setreuid' function. */
+/* #undef HAVE_SETREUID */
+
+/* Define to 1 if you have the 'setrlimit' function. */
+/* #undef HAVE_SETRLIMIT */
+
+/* Define to 1 if you have the 'setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the 'sigaction' function. */
+/* #undef HAVE_SIGACTION */
+
+/* Define to 1 if you have the 'sigsetmask' function. */
+/* #undef HAVE_SIGSETMASK */
+
+/* Define to 1 if you have the 'socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <spawn.h> header file. */
+/* #undef HAVE_SPAWN_H */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_STDINT_H 1
+#endif
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#define HAVE_STDIO_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the `stpcpy' function. */
+/* #undef HAVE_STPCPY */
+
+/* Define to 1 if you have the 'strcasecmp' function. */
+#if defined(__MINGW32__) || defined(__TINYC__)
+#define HAVE_STRCASECMP 1
+#endif
+
+/* Define to 1 if you have the 'strcmpi' function. */
+#define HAVE_STRCMPI 1
+
+/* Define to 1 if you have the 'strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the 'strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the `strerror' function. */
+#define HAVE_STRERROR 1
+
+/* Define to 1 if you have the 'stricmp' function. */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_STRINGS_H 1
+#endif
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the 'strncasecmp' function. */
+#if defined(__MINGW32__) || defined(__TINYC__)
+#define HAVE_STRNCASECMP 1
+#endif
+
+/* Define to 1 if you have the 'strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the 'strndup' function. */
+/* #undef HAVE_STRNDUP */
+
+/* Define to 1 if you have the 'strnicmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRNICMP 1
+#endif
+
+/* Define to 1 if you have the 'strsignal' function. */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define to 1 if you have the `strtoll' function. */
+#define HAVE_STRTOLL 1
+#ifdef __TINYC__
+# ifndef strtoll
+#  define strtoll _strtoi64
+# endif
+# ifndef strtoull
+#  define strtoull _strtoui64
+# endif
+#endif
+
+/* Define to 1 if `d_type' is a member of `struct dirent'. */
+/* SV 57152: MinGW64 version of dirent doesn't support d_type. */
+#ifndef __MINGW64__
+# define HAVE_STRUCT_DIRENT_D_TYPE 1
+#endif
+
+/* Define to 1 if 'n_un.n_name' is a member of 'struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines 'DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/file.h> header file. */
+/* #undef HAVE_SYS_FILE_H */
+
+/* Define to 1 if you have the <sys/loadavg.h> header file. */
+/* #undef HAVE_SYS_LOADAVG_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines 'DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_SYS_PARAM_H 1
+#endif
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+/* #undef HAVE_SYS_RESOURCE_H */
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+/* #undef HAVE_SYS_SELECT_H */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_SYS_TIME_H 1
+#endif
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if you have the `ttyname' function. */
+#define HAVE_TTYNAME 1
+char *ttyname (int);
+
+/* Define to 1 if the system has the type `intmax_t'. */
+#define HAVE_INTMAX_T 1
+
+/* Define to 1 if the system has the type `uintmax_t'. */
+#define HAVE_UINTMAX_T 1
+
+/* Define to 1 if you have the `umask' function. */
+#if defined(__MINGW32__) || defined(__TINYC__)
+# define HAVE_UMASK 1
+#endif
+
+/* Define to 1 if you have the \'union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_UNISTD_H 1
+#endif
+
+/* Define to 1 if the system has the type 'unsigned long long int'. */
+#define HAVE_UNSIGNED_LONG_LONG_INT 1
+
+/* Define to 1 if you have the `vfork' function. */
+/* #undef HAVE_VFORK */
+
+/* Define to 1 if you have the <vfork.h> header file. */
+/* #undef HAVE_VFORK_H */
+
+/* Define to 1 if you have the 'wait3' function. */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if you have the 'waitpid' function. */
+/* #undef HAVE_WAITPID */
+
+/* Define to 1 if you have the <wchar.h> header file. */
+/* #undef HAVE_WCHAR_H */
+
+/* Define to 1 if `fork' works. */
+/* #undef HAVE_WORKING_FORK */
+
+/* Define to 1 if `vfork' works. */
+/* #undef HAVE_WORKING_VFORK */
+
+/* Define to 1 if the system has the type `_Bool'. */
+/* #undef HAVE__BOOL */
+
+/* Build host information. */
+#define MAKE_HOST "Windows32"
+
+/* Define to 1 to enable job server support in GNU Make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable 'load' support in GNU Make. */
+#define MAKE_LOAD 1
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+/* #undef MAKE_SYMLINKS */
+
+/* Define to 1 if your 'struct nlist' has an 'n_un' member. Obsolete, depend
+   on 'HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ';'
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "echo no sccs get"
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the 'S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+/* #  undef WORDS_BIGENDIAN */
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for 'stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define to empty if 'const' does not conform to ANSI C. */
+/* #undef const */
+
+#ifdef __MINGW32__
+# undef __USE_MINGW_ANSI_STDIO
+# define __USE_MINGW_ANSI_STDIO 1
+#endif
+
+/* Number of bits in a timestamp, on hosts where this is settable. */
+/* #undef _TIME_BITS */
+
+/* For 64-bit time_t on 32-bit mingw. */
+#ifdef __MINGW32__
+# define __MINGW_USE_VC2005_COMPAT 1
+#endif
+
+#include <sys/types.h>
+
+/* Define to 'int' if <sys/types.h> doesn't define. */
+#define gid_t int
+
+/* Define to 'int' if <sys/types.h> does not define. */
+/* GCC 4.x reportedly defines pid_t.  */
+#ifndef _PID_T_
+#ifdef _WIN64
+#define pid_t __int64
+#else
+#define pid_t int
+#endif
+#endif
+
+/* Define to `int' if <sys/types.h> does not define. */
+#define ssize_t int
+
+/* Define to 'int' if <sys/types.h> doesn't define. */
+#define uid_t int
+
+/* Define {u,}intmax_t if not defined in <stdint.h> or <inttypes.h>. */
+#if !HAVE_STDINT_H && !HAVE_INTTYPES_H
+#define intmax_t long long
+#define uintmax_t unsigned long long
+#endif
+
+/* Define if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to the installation directory for locales.  */
+#define LOCALEDIR ""
+
+/*
+ * Refer to README.W32 for info on the following settings
+ */
+
+
+/*
+ * If you have a shell that does not grok 'sh -c quoted-command-line'
+ * correctly, you need this setting; it is the default for tcc.
+ * Please see below for specific shell support.
+ */
+#if defined(__TINYC__)
+#define BATCH_MODE_ONLY_SHELL 1
+#else
+/*#define BATCH_MODE_ONLY_SHELL 1 */
+#endif
+
+/*
+ * Define if you have the Cygnus "Cygwin" GNU Windows32 tool set.
+ * Do NOT define BATCH_MODE_ONLY_SHELL if you define HAVE_CYGWIN_SHELL
+ */
+/*#define HAVE_CYGWIN_SHELL 1 */
+
+/*
+ * Define if you have the MKS tool set or shell. Do NOT define
+ * BATCH_MODE_ONLY_SHELL if you define HAVE_MKS_SHELL
+ */
+/*#define HAVE_MKS_SHELL 1 */
+
+/*
+ * Enforce the mutual exclusivity restriction.
+ */
+#ifdef HAVE_MKS_SHELL
+#undef BATCH_MODE_ONLY_SHELL
+#endif
+
+#ifdef HAVE_CYGWIN_SHELL
+#undef BATCH_MODE_ONLY_SHELL
+#endif
+
+/* Include customized declarations.  */
+#include "../src/mkcustom.h"

src/configh.dos

@@ -0,0 +1,114 @@
+/* configh.dos -- hand-massaged config.h file for MS-DOS builds         -*-C-*-
+
+Copyright (C) 1994-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "mkconfig.h"
+
+#define MK_OS_DOS 1
+
+/* Include this header to make __DJGPP_MINOR__ available because DJGPP ports
+   of GCC 4.3.0 and later no longer do it automatically.  */
+#include <sys/version.h>
+
+/* Many things are defined already by a system header.  */
+#include <sys/config.h>
+
+#if __DJGPP__ > 2 || __DJGPP_MINOR__ > 1
+
+/* Define to 1 if 'sys_siglist' is declared by <signal.h> or <unistd.h>. */
+# define SYS_SIGLIST_DECLARED 1
+
+/* Define to 1 if the C library defines the variable '_sys_siglist'.  */
+# define HAVE_DECL_SYS_SIGLIST 1
+
+#else
+
+/* Define NSIG.  */
+# define NSIG SIGMAX
+
+#endif
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if you have 'alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have the fdopen function.  */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the 'getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if the system has the type 'long long int'. */
+#define HAVE_LONG_LONG_INT 1
+
+/* Define to 1 if you have the <memory.h> header file.  */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the mkstemp function.  */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the 'mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the 'setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the 'setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+#define SCCS_GET "get"
+
+/* Define to 1 if you have the select function.  */
+#define HAVE_SELECT 1
+
+/* Define to 1 if you have the stricmp function.  */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the 'strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the `strtoll' function. */
+#define HAVE_STRTOLL 1
+
+/* Output sync support */
+#define NO_OUTPUT_SYNC 1
+
+/* Build host information. */
+#define MAKE_HOST "i386-pc-msdosdjgpp"
+
+/* Grok DOS paths (drive specs and backslash path element separators) */
+#define HAVE_DOS_PATHS 1
+
+/* Define the type of the first arg to select().  */
+#define fd_set_size_t int
+
+/* Define to the widest signed integer type if <stdint.h> and <inttypes.h> do
+   not define. */
+#define intmax_t long long
+
+/* Define to `int' if <sys/types.h> does not define. */
+#if __DJGPP__ == 2 && __DJGPP_MINOR__ < 5
+#define ssize_t int
+#endif
+
+/* Define to 'unsigned long' or 'unsigned long long'
+   if <inttypes.h> doesn't define.  */
+#define uintmax_t unsigned long long
+
+/* Include customized declarations.  */
+#include "../src/mkcustom.h"

src/debug.h

@@ -0,0 +1,41 @@
+/* Debugging macros and interface.
+Copyright (C) 1999-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define DB_NONE         (0x000)
+#define DB_BASIC        (0x001)
+#define DB_VERBOSE      (0x002)
+#define DB_JOBS         (0x004)
+#define DB_IMPLICIT     (0x008)
+#define DB_PRINT        (0x010)
+#define DB_WHY          (0x020)
+#define DB_MAKEFILES    (0x100)
+
+#define DB_ALL          (0xfff)
+
+extern int db_level;
+
+#define ISDB(_l)    ((_l)&db_level)
+
+/* When adding macros to this list be sure to update the value of
+   XGETTEXT_OPTIONS in the po/Makevars file.  */
+#define DBS(_l,_x)  do{ if(ISDB(_l)) {print_spaces (depth); \
+                                      printf _x; fflush (stdout);} }while(0)
+
+#define DBF(_l,_x)  do{ if(ISDB(_l)) {print_spaces (depth); \
+                                      printf (_x, file->name); \
+                                      fflush (stdout);} }while(0)
+
+#define DB(_l,_x)   do{ if(ISDB(_l)) {printf _x; fflush (stdout);} }while(0)

src/default.c

@@ -0,0 +1,768 @@
+/* Data base of default implicit rules for GNU Make.
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "variable.h"
+#include "rule.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+
+/* Define GCC_IS_NATIVE if gcc is the native development environment on
+   your system (gcc/bison/flex vs cc/yacc/lex).  */
+#if MK_OS_DOS || MK_OS_OS2
+# define GCC_IS_NATIVE
+#endif
+
+
+/* This is the default list of suffixes for suffix rules.
+   '.s' must come last, so that a '.o' file will be made from
+   a '.c' or '.p' or ... file rather than from a .s file.  */
+
+static const char default_suffixes[]
+#if MK_OS_VMS
+  /* VMS should include all UNIX/POSIX + some VMS extensions */
+  = ".out .exe .a .olb .hlb .tlb .mlb .ln .o .obj .c .cxx .cc .cpp .pas .p \
+.for .f .r .y .l .ym .yl .mar .s .ss .i .ii .mod .sym .def .h .info .dvi \
+.tex .texinfo .texi .txinfo .mem .hlp .brn .rnh .rno .rnt .rnx .w .ch .cweb \
+.web .com .sh .elc .el";
+#elif MK_OS_OS2
+  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S \
+.mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
+.w .ch .web .sh .elc .el .obj .exe .dll .lib";
+#else
+  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S \
+.mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
+.w .ch .web .sh .elc .el";
+#endif
+
+static const struct pspec default_pattern_rules[] =
+  {
+#if MK_OS_VMS
+    { "(%)", "%",
+        "@if f$$search(\"$@\") .eqs. \"\" then $(LIBRARY)/CREATE/"
+         "$(or "
+          "$(patsubst %,TEXT,$(filter %.tlb %.TLB,$@)),"
+          "$(patsubst %,HELP,$(filter %.hlb %.HLB,$@)),"
+          "$(patsubst %,MACRO,$(filter %.mlb %.MLB,$@)),"
+          "$(and "
+           "$(patsubst %,SHARE,$(filter %.olb %.OLB,$@)),"
+           "$(patsubst %,SHARE,$(filter %.exe %.EXE,$<))),"
+          "OBJECT)"
+         " $@\n"
+        "$(AR) $(ARFLAGS) $@ $<" },
+
+#else
+    { "(%)", "%",
+        "$(AR) $(ARFLAGS) $@ $<" },
+#endif
+    /* The X.out rules are only in BSD's default set because
+       BSD Make has no null-suffix rules, so 'foo.out' and
+       'foo' are the same thing.  */
+#if MK_OS_VMS
+    { "%.exe", "%",
+        "$(CP) $< $@" },
+
+#endif
+    { "%.out", "%",
+        "@rm -f $@ \n cp $< $@" },
+
+    /* Syntax is "ctangle foo.w foo.ch foo.c".  */
+    { "%.c", "%.w %.ch",
+        "$(CTANGLE) $^ $@" },
+    { "%.tex", "%.w %.ch",
+        "$(CWEAVE) $^ $@" },
+
+    { 0, 0, 0 }
+  };
+
+static const struct pspec default_terminal_rules[] =
+  {
+#if MK_OS_VMS
+
+    /* RCS.  */
+    { "%", "%$$5lv", /* Multinet style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "[.$$rcs]%$$5lv", /* Multinet style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "%_v", /* Normal style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "[.rcs]%_v", /* Normal style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+
+    /* SCCS.  */
+        /* ain't no SCCS on vms */
+
+#else
+    /* RCS.  */
+    { "%", "%,v",
+        "$(CHECKOUT,v)" },
+    { "%", "RCS/%,v",
+        "$(CHECKOUT,v)" },
+    { "%", "RCS/%",
+        "$(CHECKOUT,v)" },
+
+    /* SCCS.  */
+    { "%", "s.%",
+        "$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<" },
+    { "%", "SCCS/s.%",
+        "$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<" },
+#endif /* !MK_OS_VMS */
+    { 0, 0, 0 }
+  };
+
+static const char *const default_suffix_rules[] =
+  {
+#if MK_OS_VMS
+    ".o",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".obj",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".s",
+    "$(LINK.s) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".S",
+    "$(LINK.S) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".c",
+    "$(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cc",
+    "$(LINK.cc) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".C",
+    "$(LINK.C) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cpp",
+    "$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".f",
+    "$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".m",
+    "$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".p",
+    "$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".F",
+    "$(LINK.F) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".r",
+    "$(LINK.r) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".mod",
+    "$(COMPILE.mod) -o $@ -e $@ $^",
+
+    ".def.sym",
+    "$(COMPILE.def) -o $@ $<",
+
+    ".sh",
+    "copy $< >$@",
+
+    ".obj.exe",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".mar.exe",
+    "$(COMPILE.mar) $^ \n $(LINK.obj) $(subst .mar,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".s.o",
+    "$(COMPILE.s) -o $@ $<",
+    ".s.exe",
+    "$(COMPILE.s) $^ \n $(LINK.obj) $(subst .s,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".c.exe",
+    "$(COMPILE.c) $^ \n $(LINK.obj) $(subst .c,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".cc.exe",
+#ifdef GCC_IS_NATIVE
+    "$(COMPILE.cc) $^ \n $(LINK.obj) $(CXXSTARTUP),sys$$disk:[]$(subst .cc,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+#else
+    "$(COMPILE.cc) $^ \n $(CXXLINK.obj) $(subst .cc,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+    ".cxx.exe",
+    "$(COMPILE.cxx) $^ \n $(CXXLINK.obj) $(subst .cxx,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+#endif
+    ".for.exe",
+    "$(COMPILE.for) $^ \n $(LINK.obj) $(subst .for,.obj,$^) $(LOADLIBES) $(LDLIBS) /exe=$@",
+    ".pas.exe",
+    "$(COMPILE.pas) $^ \n $(LINK.obj) $(subst .pas,.obj,$^) $(LOADLIBES) $(LDLIBS) /exe=$@",
+
+    ".com",
+    "copy $< >$@",
+
+    ".mar.obj",
+    "$(COMPILE.mar) /obj=$@ $<",
+    ".s.obj",
+    "$(COMPILE.s) /obj=$@ $<",
+    ".ss.obj",
+    "$(COMPILE.s) /obj=$@ $<",
+    ".c.i",
+    "$(COMPILE.c)/prep /list=$@ $<",
+    ".c.s",
+    "$(COMPILE.c)/noobj/machine /list=$@ $<",
+    ".i.s",
+    "$(COMPILE.c)/noprep/noobj/machine /list=$@ $<",
+    ".c.obj",
+    "$(COMPILE.c) /obj=$@ $<",
+    ".c.o",
+    "$(COMPILE.c) /obj=$@ $<",
+    ".cc.ii",
+    "$(COMPILE.cc)/prep /list=$@ $<",
+    ".cc.ss",
+    "$(COMPILE.cc)/noobj/machine /list=$@ $<",
+    ".ii.ss",
+    "$(COMPILE.cc)/noprep/noobj/machine /list=$@ $<",
+    ".cc.obj",
+    "$(COMPILE.cc) /obj=$@ $<",
+    ".cc.o",
+    "$(COMPILE.cc) /obj=$@ $<",
+    ".cxx.obj",
+    "$(COMPILE.cxx) /obj=$@ $<",
+    ".cxx.o",
+    "$(COMPILE.cxx) /obj=$@ $<",
+    ".for.obj",
+    "$(COMPILE.for) /obj=$@ $<",
+    ".for.o",
+    "$(COMPILE.for) /obj=$@ $<",
+    ".pas.obj",
+    "$(COMPILE.pas) /obj=$@ $<",
+    ".pas.o",
+    "$(COMPILE.pas) /obj=$@ $<",
+
+    ".y.c",
+    "$(YACC.y) $< \n rename y_tab.c $@",
+    ".l.c",
+    "$(LEX.l) $< \n rename lexyy.c $@",
+
+    ".texinfo.info",
+    "$(MAKEINFO) $<",
+
+    ".tex.dvi",
+    "$(TEX) $<",
+
+    ".cpp.o",
+    "$(COMPILE.cpp) $(OUTPUT_OPTION) $<",
+    ".f.o",
+    "$(COMPILE.f) $(OUTPUT_OPTION) $<",
+    ".m.o",
+    "$(COMPILE.m) $(OUTPUT_OPTION) $<",
+    ".p.o",
+    "$(COMPILE.p) $(OUTPUT_OPTION) $<",
+    ".r.o",
+    "$(COMPILE.r) $(OUTPUT_OPTION) $<",
+    ".mod.o",
+    "$(COMPILE.mod) -o $@ $<",
+
+    ".c.ln",
+    "$(LINT.c) -C$* $<",
+    ".y.ln",
+    "$(YACC.y) $< \n rename y_tab.c $@",
+
+    ".l.ln",
+    "@$(RM) $*.c\n $(LEX.l) $< > $*.c\n$(LINT.c) -i $*.c -o $@\n $(RM) $*.c",
+
+#else /* ! MK_OS_VMS */
+
+    ".o",
+    "$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".s",
+    "$(LINK.s) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".S",
+    "$(LINK.S) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".c",
+    "$(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cc",
+    "$(LINK.cc) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".C",
+    "$(LINK.C) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cpp",
+    "$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".f",
+    "$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".m",
+    "$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".p",
+    "$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".F",
+    "$(LINK.F) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".r",
+    "$(LINK.r) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".mod",
+    "$(COMPILE.mod) -o $@ -e $@ $^",
+
+    ".def.sym",
+    "$(COMPILE.def) -o $@ $<",
+
+    ".sh",
+    "cat $< >$@ \n chmod a+x $@",
+
+    ".s.o",
+    "$(COMPILE.s) -o $@ $<",
+    ".S.o",
+    "$(COMPILE.S) -o $@ $<",
+    ".c.o",
+    "$(COMPILE.c) $(OUTPUT_OPTION) $<",
+    ".cc.o",
+    "$(COMPILE.cc) $(OUTPUT_OPTION) $<",
+    ".C.o",
+    "$(COMPILE.C) $(OUTPUT_OPTION) $<",
+    ".cpp.o",
+    "$(COMPILE.cpp) $(OUTPUT_OPTION) $<",
+    ".f.o",
+    "$(COMPILE.f) $(OUTPUT_OPTION) $<",
+    ".m.o",
+    "$(COMPILE.m) $(OUTPUT_OPTION) $<",
+    ".p.o",
+    "$(COMPILE.p) $(OUTPUT_OPTION) $<",
+    ".F.o",
+    "$(COMPILE.F) $(OUTPUT_OPTION) $<",
+    ".r.o",
+    "$(COMPILE.r) $(OUTPUT_OPTION) $<",
+    ".mod.o",
+    "$(COMPILE.mod) -o $@ $<",
+
+    ".c.ln",
+    "$(LINT.c) -C$* $<",
+    ".y.ln",
+#if MK_OS_DOS
+    "$(YACC.y) $< \n $(LINT.c) -C$* y_tab.c \n $(RM) y_tab.c",
+#else
+    "$(YACC.y) $< \n $(LINT.c) -C$* y.tab.c \n $(RM) y.tab.c",
+#endif
+    ".l.ln",
+    "@$(RM) $*.c\n $(LEX.l) $< > $*.c\n$(LINT.c) -i $*.c -o $@\n $(RM) $*.c",
+
+    ".y.c",
+#if MK_OS_DOS
+    "$(YACC.y) $< \n mv -f y_tab.c $@",
+#else
+    "$(YACC.y) $< \n mv -f y.tab.c $@",
+#endif
+    ".l.c",
+    "@$(RM) $@ \n $(LEX.l) $< > $@",
+    ".ym.m",
+    "$(YACC.m) $< \n mv -f y.tab.c $@",
+    ".lm.m",
+    "@$(RM) $@ \n $(LEX.m) $< > $@",
+
+    ".F.f",
+    "$(PREPROCESS.F) $(OUTPUT_OPTION) $<",
+    ".r.f",
+    "$(PREPROCESS.r) $(OUTPUT_OPTION) $<",
+
+    /* This might actually make lex.yy.c if there's no %R% directive in $*.l,
+       but in that case why were you trying to make $*.r anyway?  */
+    ".l.r",
+    "$(LEX.l) $< > $@ \n mv -f lex.yy.r $@",
+
+    ".S.s",
+    "$(PREPROCESS.S) $< > $@",
+
+    ".texinfo.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".texi.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".txinfo.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".tex.dvi",
+    "$(TEX) $<",
+
+    ".texinfo.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".texi.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".txinfo.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".w.c",
+    "$(CTANGLE) $< - $@",       /* The '-' says there is no '.ch' file.  */
+
+    ".web.p",
+    "$(TANGLE) $<",
+
+    ".w.tex",
+    "$(CWEAVE) $< - $@",        /* The '-' says there is no '.ch' file.  */
+
+    ".web.tex",
+    "$(WEAVE) $<",
+
+#endif /* !MK_OS_VMS */
+
+    0, 0,
+  };
+
+static const char *const default_variables[] =
+  {
+#if MK_OS_VMS
+#ifdef __ALPHA
+    "ARCH", "ALPHA",
+#endif
+#ifdef __ia64
+    "ARCH", "IA64",
+#endif
+#ifdef __VAX
+    "ARCH", "VAX",
+#endif
+    "AR", "library",
+    "LIBRARY", "library",
+    "ARFLAGS", "/replace",
+    "AS", "macro",
+    "MACRO", "macro",
+#ifdef GCC_IS_NATIVE
+    "CC", "gcc",
+#else
+    "CC", "cc",
+#endif
+    "CD", "builtin_cd",
+    "ECHO", "builtin_echo",
+#ifdef GCC_IS_NATIVE
+    "C++", "gcc/plus",
+    "CXX", "gcc/plus",
+#else
+    "C++", "cxx",
+    "CXX", "cxx",
+#ifndef __ia64
+    "CXXLD", "cxxlink",
+    "CXXLINK", "cxxlink",
+#else
+    /* CXXLINK is not used on VMS/IA64 */
+    "CXXLD", "link",
+    "CXXLINK", "link",
+#endif
+#endif
+    "CO", "co",
+    "CPP", "$(CC) /preprocess_only",
+    "FC", "fortran",
+    /* System V uses these, so explicit rules using them should work.
+       However, there is no way to make implicit rules use them and FC.  */
+    "F77", "$(FC)",
+    "F77FLAGS", "$(FFLAGS)",
+    "LD", "link",
+    "LEX", "lex",
+    "PC", "pascal",
+    "YACC", "bison/yacc",
+    "YFLAGS", "/Define/Verbose",
+    "BISON", "bison",
+    "MAKEINFO", "makeinfo",
+    "TEX", "tex",
+    "TEXINDEX", "texindex",
+
+    "RM", "delete/nolog",
+
+    "CSTARTUP", "",
+#ifdef GCC_IS_NATIVE
+    "CRT0", ",sys$$library:vaxcrtl.olb/lib,gnu_cc_library:crt0.obj",
+    "CXXSTARTUP", "gnu_cc_library:crtbegin.obj",
+    "CXXRT0", ",sys$$library:vaxcrtl.olb/lib,gnu_cc_library:crtend.obj,gnu_cc_library:gxx_main.obj",
+    "LXLIBS", ",gnu_cc_library:libstdcxx.olb/lib,gnu_cc_library:libgccplus.olb/lib",
+    "LDLIBS", ",gnu_cc_library:libgcc.olb/lib",
+#else
+    "CRT0", "",
+    "CXXSTARTUP", "",
+    "CXXRT0", "",
+    "LXLIBS", "",
+    "LDLIBS", "",
+#endif
+
+    "LINK.o", "$(LD) $(LDFLAGS)",
+    "LINK.obj", "$(LD) $(LDFLAGS)",
+#ifndef GCC_IS_NATIVE
+    "CXXLINK.obj", "$(CXXLD) $(LDFLAGS)",
+    "COMPILE.cxx", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+#endif
+    "COMPILE.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "LINK.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.C", "$(COMPILE.cc)",
+    "COMPILE.cpp", "$(COMPILE.cc)",
+    "LINK.C", "$(LINK.cc)",
+    "LINK.cpp", "$(LINK.cc)",
+    "YACC.y", "$(YACC) $(YFLAGS)",
+    "LEX.l", "$(LEX) $(LFLAGS)",
+    "YACC.m", "$(YACC) $(YFLAGS)",
+    "LEX.m", "$(LEX) $(LFLAGS) -t",
+    "COMPILE.for", "$(FC) $(FFLAGS) $(TARGET_ARCH)",
+    "COMPILE.f", "$(FC) $(FFLAGS) $(TARGET_ARCH) -c",
+    "LINK.f", "$(FC) $(FFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -c",
+    "LINK.r", "$(FC) $(FFLAGS) $(RFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.pas", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.def", "$(M2C) $(M2FLAGS) $(DEFFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mod", "$(M2C) $(M2FLAGS) $(MODFLAGS) $(TARGET_ARCH)",
+    "COMPILE.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mar", "$(MACRO) $(MACROFLAGS)",
+    "COMPILE.s", "$(AS) $(ASFLAGS) $(TARGET_MACH)",
+    "LINK.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_MACH) -c",
+    "PREPROCESS.S", "$(CPP) $(CPPFLAGS)",
+    "PREPROCESS.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -F",
+    "PREPROCESS.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -F",
+    "LINT.c", "$(LINT) $(LINTFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+
+    "MV", "rename/new_version",
+    "CP", "copy",
+    ".LIBPATTERNS", "%.olb lib%.a",
+
+#else /* !MK_OS_VMS */
+
+    "AR", "ar",
+#ifdef _AIX
+    /* AIX requires object file format specification: choose -Xany.  */
+    "ARFLAGS", "-Xany -rv",
+#else
+    "ARFLAGS", "-rv",
+#endif
+    "AS", "as",
+#ifdef GCC_IS_NATIVE
+    "CC", "gcc",
+    "OBJC", "gcc",
+#else
+    "CC", "cc",
+    "OBJC", "cc",
+#endif
+#ifdef MAKE_CXX
+    "CXX", MAKE_CXX,
+#else
+# ifdef GCC_IS_NATIVE
+#  ifdef MK_OS_DOS
+    "CXX", "gpp",       /* g++ is an invalid name on MSDOS */
+#  else
+    "CXX", "gcc",
+#  endif /* __MSDOS__ */
+# else
+    "CXX", "g++",
+# endif
+#endif
+    /* This expands to $(CO) $(COFLAGS) $< $@ if $@ does not exist,
+       and to the empty string if $@ does exist.  */
+    "CHECKOUT,v", "+$(if $(wildcard $@),,$(CO) $(COFLAGS) $< $@)",
+    "CO", "co",
+    "COFLAGS", "",
+
+    "CPP", "$(CC) -E",
+#ifdef CRAY
+    "CF77PPFLAGS", "-P",
+    "CF77PP", "/lib/cpp",
+    "CFT", "cft77",
+    "CF", "cf77",
+    "FC", "$(CF)",
+#else /* Not CRAY.  */
+#ifdef _IBMR2
+    "FC", "xlf",
+#else
+#ifdef __convex__
+    "FC", "fc",
+#else
+    "FC", "f77",
+#endif /* __convex__ */
+#endif /* _IBMR2 */
+    /* System V uses these, so explicit rules using them should work.
+       However, there is no way to make implicit rules use them and FC.  */
+    "F77", "$(FC)",
+    "F77FLAGS", "$(FFLAGS)",
+#endif  /* Cray.  */
+    "GET", SCCS_GET,
+    "LD", "ld",
+#ifdef GCC_IS_NATIVE
+    "LEX", "flex",
+#else
+    "LEX", "lex",
+#endif
+    "LINT", "lint",
+    "M2C", "m2c",
+#ifdef pyr
+    "PC", "pascal",
+#else
+#ifdef CRAY
+    "PC", "PASCAL",
+    "SEGLDR", "segldr",
+#else
+    "PC", "pc",
+#endif  /* CRAY.  */
+#endif  /* pyr.  */
+#ifdef GCC_IS_NATIVE
+    "YACC", "bison -y",
+#else
+    "YACC", "yacc",     /* Or "bison -y"  */
+#endif
+    "MAKEINFO", "makeinfo",
+    "TEX", "tex",
+    "TEXI2DVI", "texi2dvi",
+    "WEAVE", "weave",
+    "CWEAVE", "cweave",
+    "TANGLE", "tangle",
+    "CTANGLE", "ctangle",
+
+    "RM", "rm -f",
+
+    "LINK.o", "$(CC) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+#ifndef HAVE_CASE_INSENSITIVE_FS
+    /* On case-insensitive filesystems, treat *.C files as *.c files,
+       to avoid erroneously compiling C sources as C++, which will
+       probably fail.  */
+    "COMPILE.C", "$(COMPILE.cc)",
+#else
+    "COMPILE.C", "$(COMPILE.c)",
+#endif
+    "COMPILE.cpp", "$(COMPILE.cc)",
+    "LINK.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+#ifndef HAVE_CASE_INSENSITIVE_FS
+    "LINK.C", "$(LINK.cc)",
+#else
+    "LINK.C", "$(LINK.c)",
+#endif
+    "LINK.cpp", "$(LINK.cc)",
+    "YACC.y", "$(YACC) $(YFLAGS)",
+    "LEX.l", "$(LEX) $(LFLAGS) -t",
+    "YACC.m", "$(YACC) $(YFLAGS)",
+    "LEX.m", "$(LEX) $(LFLAGS) -t",
+    "COMPILE.f", "$(FC) $(FFLAGS) $(TARGET_ARCH) -c",
+    "LINK.f", "$(FC) $(FFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -c",
+    "LINK.r", "$(FC) $(FFLAGS) $(RFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.def", "$(M2C) $(M2FLAGS) $(DEFFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mod", "$(M2C) $(M2FLAGS) $(MODFLAGS) $(TARGET_ARCH)",
+    "COMPILE.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "LINK.s", "$(CC) $(ASFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.s", "$(AS) $(ASFLAGS) $(TARGET_MACH)",
+    "LINK.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_MACH) -c",
+    "PREPROCESS.S", "$(CPP) $(CPPFLAGS)",
+    "PREPROCESS.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -F",
+    "PREPROCESS.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -F",
+    "LINT.c", "$(LINT) $(LINTFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+
+#ifndef NO_MINUS_C_MINUS_O
+    "OUTPUT_OPTION", "-o $@",
+#endif
+
+#ifdef SCCS_GET_MINUS_G
+    "SCCS_OUTPUT_OPTION", "-G$@",
+#endif
+
+#if MK_OS_DOS
+    ".LIBPATTERNS", "lib%.a $(DJDIR)/lib/lib%.a",
+#elif defined(__APPLE__)
+    ".LIBPATTERNS", "lib%.dylib lib%.a",
+#elif defined(__CYGWIN__) || MK_OS_W32
+    ".LIBPATTERNS", "lib%.dll.a %.dll.a lib%.a %.lib lib%.dll %.dll",
+#else
+    ".LIBPATTERNS", "lib%.so lib%.a",
+#endif
+
+#endif /* !MK_OS_VMS */
+    /* Make this assignment to avoid undefined variable warnings.  */
+    GNUMAKEFLAGS_NAME, "",
+    0, 0
+  };
+
+/* Set up the default .SUFFIXES list.  */
+
+void
+set_default_suffixes (void)
+{
+  suffix_file = enter_file (strcache_add (".SUFFIXES"));
+  suffix_file->builtin = 1;
+
+  if (no_builtin_rules_flag)
+    define_variable_cname ("SUFFIXES", "", o_default, 0);
+  else
+    {
+      struct dep *d;
+      const char *p = default_suffixes;
+      suffix_file->deps = enter_prereqs (PARSE_SIMPLE_SEQ ((char **)&p, struct dep),
+                                         NULL);
+      for (d = suffix_file->deps; d; d = d->next)
+        d->file->builtin = 1;
+
+      define_variable_cname ("SUFFIXES", default_suffixes, o_default, 0);
+    }
+}
+
+/* Enter the default suffix rules as file rules.  This used to be done in
+   install_default_implicit_rules, but that loses because we want the
+   suffix rules installed before reading makefiles, and the pattern rules
+   installed after.  */
+
+void
+install_default_suffix_rules ()
+{
+  const char *const *s;
+
+  if (no_builtin_rules_flag)
+    return;
+
+  for (s = default_suffix_rules; *s != 0; s += 2)
+    {
+      struct file *f = enter_file (strcache_add (s[0]));
+      /* Install the default rule only if there is no user defined rule.  */
+      if (!f->cmds)
+        {
+          f->cmds = xmalloc (sizeof (struct commands));
+          f->cmds->fileinfo.filenm = NULL;
+          f->cmds->commands = xstrdup (s[1]);
+          f->cmds->command_lines = NULL;
+          f->cmds->recipe_prefix = RECIPEPREFIX_DEFAULT;
+          f->builtin = 1;
+        }
+    }
+}
+
+
+/* Install the default pattern rules.  */
+
+void
+install_default_implicit_rules (void)
+{
+  const struct pspec *p;
+
+  if (no_builtin_rules_flag)
+    return;
+
+  for (p = default_pattern_rules; p->target != 0; ++p)
+    install_pattern_rule (p, 0);
+
+  for (p = default_terminal_rules; p->target != 0; ++p)
+    install_pattern_rule (p, 1);
+}
+
+void
+define_default_variables (void)
+{
+  const char *const *s;
+
+  if (no_builtin_variables_flag)
+    return;
+
+  for (s = default_variables; *s != 0; s += 2)
+    define_variable (s[0], strlen (s[0]), s[1], o_default, 1);
+}
+
+void
+undefine_default_variables (void)
+{
+  const char *const *s;
+
+  for (s = default_variables; *s != 0; s += 2)
+    undefine_variable_global (NILF, s[0], strlen (s[0]), o_default);
+}

src/dep.h

@@ -0,0 +1,139 @@
+/* Definitions of dependency data structures for GNU Make.
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+/* Structure used in chains of names, for parsing and globbing.  */
+
+#define NAMESEQ(_t)     \
+    _t *next;           \
+    const char *name
+
+struct nameseq
+  {
+    NAMESEQ (struct nameseq);
+  };
+
+/* Flag bits for the second argument to 'read_makefile'.
+   These flags are saved in the 'flags' field of each
+   'struct goaldep' in the chain returned by 'read_all_makefiles'.  */
+
+#define RM_NOFLAG               0
+#define RM_NO_DEFAULT_GOAL      (1 << 0) /* Do not set default goal.  */
+#define RM_INCLUDED             (1 << 1) /* Search makefile search path.  */
+#define RM_DONTCARE             (1 << 2) /* No error if it doesn't exist.  */
+#define RM_NO_TILDE             (1 << 3) /* Don't expand ~ in file name.  */
+
+/* Structure representing one dependency of a file.
+   Each struct file's 'deps' points to a chain of these, through 'next'.
+   'stem' is the stem for this dep line of static pattern rule or NULL.
+   explicit is set when implicit rule search is performed and the prerequisite
+   does not contain %. When explicit is set the file is not intermediate.  */
+
+#define DEP(_t)                                 \
+    NAMESEQ (_t);                               \
+    struct file *file;                          \
+    _t *shuf;                                   \
+    const char *stem;                           \
+    unsigned int flags : 8;                     \
+    unsigned int changed : 1;                   \
+    unsigned int ignore_mtime : 1;              \
+    unsigned int staticpattern : 1;             \
+    unsigned int need_2nd_expansion : 1;        \
+    unsigned int ignore_automatic_vars : 1;     \
+    unsigned int is_explicit : 1;               \
+    unsigned int wait_here : 1
+
+struct dep
+  {
+    DEP (struct dep);
+  };
+
+/* Structure representing one goal.
+   The goals to be built constitute a chain of these, chained through 'next'.
+   'stem' is not used, but it's simpler to include and ignore it.  */
+
+struct goaldep
+  {
+    DEP (struct goaldep);
+    int error;
+    floc floc;
+  };
+
+/* Options for parsing lists of filenames.  */
+
+#define PARSEFS_NONE    0x0000
+#define PARSEFS_NOSTRIP 0x0001
+#define PARSEFS_NOAR    0x0002
+#define PARSEFS_NOGLOB  0x0004
+#define PARSEFS_EXISTS  0x0008
+#define PARSEFS_NOCACHE 0x0010
+#define PARSEFS_ONEWORD 0x0020
+#define PARSEFS_WAIT    0x0040
+
+#define PARSE_FILE_SEQ(_s,_t,_c,_p,_f) \
+            (_t *)parse_file_seq ((_s),sizeof (_t),(_c),(_p),(_f))
+#define PARSE_SIMPLE_SEQ(_s,_t) \
+            (_t *)parse_file_seq ((_s),sizeof (_t),MAP_NUL,NULL,PARSEFS_NONE)
+
+#if MK_OS_VMS
+void *parse_file_seq ();
+#else
+void *parse_file_seq (char **stringp, size_t size,
+                      int stopmap, const char *prefix, int flags);
+#endif
+
+char *tilde_expand (const char *name);
+
+#ifndef NO_ARCHIVES
+struct nameseq *ar_glob (const char *arname, const char *member_pattern, size_t size);
+#endif
+
+#define dep_name(d)       ((d)->name ? (d)->name : (d)->file->name)
+
+#define alloc_seq_elt(_t) xcalloc (sizeof (_t))
+void free_ns_chain (struct nameseq *n);
+
+#if defined(MAKE_MAINTAINER_MODE) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
+/* Use inline to get real type-checking.  */
+#define SI static inline
+SI struct nameseq *alloc_ns (void)    { return alloc_seq_elt (struct nameseq); }
+SI struct dep *alloc_dep (void)       { return alloc_seq_elt (struct dep); }
+SI struct goaldep *alloc_goaldep (void) { return alloc_seq_elt (struct goaldep); }
+
+SI void free_ns (struct nameseq *n)      { free (n); }
+SI void free_dep (struct dep *d)         { free_ns ((struct nameseq *)d); }
+SI void free_goaldep (struct goaldep *g) { free_dep ((struct dep *)g); }
+SI void free_dep_chain (struct dep *d)   { free_ns_chain((struct nameseq *)d); }
+SI void free_goal_chain (struct goaldep *g) { free_dep_chain((struct dep *)g); }
+#else
+# define alloc_ns()          alloc_seq_elt (struct nameseq)
+# define alloc_dep()         alloc_seq_elt (struct dep)
+# define alloc_goaldep()     alloc_seq_elt (struct goaldep)
+
+# define free_ns(_n)         free (_n)
+# define free_dep(_d)        free_ns (_d)
+# define free_goaldep(_g)    free_dep (_g)
+
+# define free_dep_chain(_d)  free_ns_chain ((struct nameseq *)(_d))
+# define free_goal_chain(_g) free_ns_chain ((struct nameseq *)(_g))
+#endif
+
+struct dep *copy_dep (const struct dep *d);
+struct dep *copy_dep_chain (const struct dep *d);
+
+struct goaldep *read_all_makefiles (const char **makefiles);
+void eval_buffer (char *buffer, const floc *floc);
+enum update_status update_goal_chain (struct goaldep *goals);

src/expand.c

@@ -0,0 +1,710 @@
+/* Variable expansion functions for GNU Make.
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "commands.h"
+#include "debug.h"
+#include "filedef.h"
+#include "job.h"
+#include "variable.h"
+#include "rule.h"
+#include "warning.h"
+
+/* Initially, any errors reported when expanding strings will be reported
+   against the file where the error appears.  */
+const floc **expanding_var = &reading_file;
+
+/* The next two describe the variable output buffer.
+   This buffer is used to hold the variable-expansion of a line of the
+   makefile.  It is made bigger with realloc whenever it is too small.
+   variable_buffer_length is the size currently allocated.
+   variable_buffer is the address of the buffer.
+
+   For efficiency, it's guaranteed that the buffer will always have
+   VARIABLE_BUFFER_ZONE extra bytes allocated.  This allows you to add a few
+   extra chars without having to call a function.  Note you should never use
+   these bytes unless you're _sure_ you have room (you know when the buffer
+   length was last checked.  */
+
+#define VARIABLE_BUFFER_ZONE    5
+
+static size_t variable_buffer_length;
+char *variable_buffer;
+
+/* Append LENGTH chars of STRING at PTR which must point into variable_buffer.
+   The buffer will always be kept nul-terminated.
+   The updated pointer into the buffer is returned as the value.  Thus, the
+   value returned by each call to variable_buffer_output should be the first
+   argument to the following call.  */
+
+char *
+variable_buffer_output (char *ptr, const char *string, size_t length)
+{
+  size_t newlen = length + (ptr - variable_buffer);
+
+  assert (ptr >= variable_buffer);
+  assert (ptr < variable_buffer + variable_buffer_length);
+
+  if (newlen + VARIABLE_BUFFER_ZONE + 1 > variable_buffer_length)
+    {
+      size_t offset = ptr - variable_buffer;
+      variable_buffer_length = (newlen + 100 > 2 * variable_buffer_length
+                                ? newlen + 100
+                                : 2 * variable_buffer_length);
+      variable_buffer = xrealloc (variable_buffer, variable_buffer_length + 1);
+      ptr = variable_buffer + offset;
+    }
+
+  ptr = mempcpy (ptr, string, length);
+  *ptr = '\0';
+  return ptr;
+}
+
+/* Return a pointer to the beginning of the variable buffer.
+   This is called from main() and it should never be null afterward.  */
+
+char *
+initialize_variable_output ()
+{
+  /* If we don't have a variable output buffer yet, get one.  */
+
+  if (!variable_buffer)
+    {
+      variable_buffer_length = 200;
+      variable_buffer = xmalloc (variable_buffer_length);
+    }
+
+  variable_buffer[0] = '\0';
+
+  return variable_buffer;
+}
+
+/* Install a new variable_buffer context, returning the current one for
+   safe-keeping.  */
+
+void
+install_variable_buffer (char **bufp, size_t *lenp)
+{
+  *bufp = variable_buffer;
+  *lenp = variable_buffer_length;
+
+  variable_buffer = NULL;
+  initialize_variable_output ();
+}
+
+/* Free the current variable_buffer and restore a previously-saved one.
+ */
+
+void
+restore_variable_buffer (char *buf, size_t len)
+{
+  free (variable_buffer);
+
+  variable_buffer = buf;
+  variable_buffer_length = len;
+}
+
+/* Restore a previously-saved variable_buffer context, and return the
+   current one.
+ */
+
+char *
+swap_variable_buffer (char *buf, size_t len)
+{
+  char *p = variable_buffer;
+
+  variable_buffer = buf;
+  variable_buffer_length = len;
+
+  return p;
+}
+
+
+/* Recursively expand V.  The returned string is malloc'd.  */
+
+static char *allocated_variable_append (const struct variable *v);
+
+char *
+recursively_expand_for_file (struct variable *v, struct file *file)
+{
+  char *value;
+  const floc *this_var;
+  const floc **saved_varp;
+  struct variable_set_list *savev = 0;
+  int set_reading = 0;
+  size_t nl = strlen (v->name);
+  struct variable *parent = NULL;
+
+  /* If we're expanding to put into the environment of a shell function then
+     ignore any recursion issues: for backward-compatibility we will use
+     the value of the environment variable we were started with.  */
+  if (v->expanding && env_recursion)
+    {
+      char **ep;
+      DB (DB_VERBOSE,
+          (_("%s:%lu: not recursively expanding %s to export to shell function\n"),
+           v->fileinfo.filenm, v->fileinfo.lineno, v->name));
+
+      /* We could create a hash for the original environment for speed, but a
+         reasonably written makefile shouldn't hit this situation...  */
+      for (ep = environ; *ep != 0; ++ep)
+        if (strncmp (*ep, v->name, nl) == 0 && (*ep)[nl] == '=')
+          return xstrdup ((*ep) + nl + 1);
+
+      /* If there's nothing in the parent environment, use the empty string.
+         This isn't quite correct since the variable should not exist at all,
+         but getting that to work would be involved. */
+      return xstrdup ("");
+    }
+
+  /* Don't install a new location if this location is empty.
+     This can happen for command-line variables, builtin variables, etc.  */
+  saved_varp = expanding_var;
+  if (v->fileinfo.filenm)
+    {
+      this_var = &v->fileinfo;
+      expanding_var = &this_var;
+    }
+
+  /* If we have no other file-reading context, use the variable's context. */
+  if (!reading_file)
+    {
+      set_reading = 1;
+      reading_file = &v->fileinfo;
+    }
+
+  if (v->expanding)
+    {
+      if (!v->exp_count)
+        /* Expanding V causes infinite recursion.  Lose.  */
+        OS (fatal, *expanding_var,
+            _("recursive variable '%s' references itself (eventually)"),
+            v->name);
+      --v->exp_count;
+    }
+
+  if (file)
+    install_file_context (file, &savev, NULL);
+
+  v->expanding = 1;
+  if (v->append)
+    {
+      /* Find a parent definition which is marked override.  */
+      struct variable_set_list *sl;
+      for (sl = current_variable_set_list; sl && !parent; sl = sl->next)
+        {
+          struct variable *vp = lookup_variable_in_set (v->name, nl, sl->set);
+          if (vp && vp != v && vp->origin == o_override)
+            parent = vp;
+        }
+    }
+
+  if (parent)
+    /* PARENT is an override, V is appending.  If V is also an override:
+         override hello := first
+         al%: override hello += second
+       Then construct the value from its appended parts in the parent sets.
+       Else if V is not an override:
+         override hello := first
+         al%: hello += second
+       Then ignore the value of V and use the value of PARENT.  */
+    value = v->origin == o_override
+      ? allocated_variable_append (v)
+      : xstrdup (parent->value);
+  else if (v->origin == o_command || v->origin == o_env_override)
+    /* Avoid appending to a pattern-specific variable, unless the origin of this
+       pattern-specific variable beats or equals the origin of one of the parent
+       definitions of this variable.
+       This is needed, because if there is a command line definition or an env
+       override, then the value defined in the makefile should only be appended
+       in the case of a file override.
+       In the presence of command line definition or env override and absence of
+       makefile override, the value should be expanded, rather than appended. In
+       this case, at parse time record_target_var already set the value of this
+       pattern-specific variable to the value defined on the command line or to
+       the env override value.
+       User provided a command line definition or an env override.
+       PARENT does not have an override directive, so ignore it.  */
+    value = allocated_expand_string (v->value);
+  else if (v->append)
+    /* Construct the value from its appended parts in the parent sets.  */
+    value = allocated_variable_append (v);
+  else
+    /* A definition without appending.  */
+    value = allocated_expand_string (v->value);
+  v->expanding = 0;
+
+  if (set_reading)
+    reading_file = 0;
+
+  if (file)
+    restore_file_context (savev, NULL);
+
+  expanding_var = saved_varp;
+
+  return value;
+}
+
+/* Expand a simple reference to variable NAME, which is LENGTH chars long.
+   The result is written to PTR which must point into the variable_buffer.
+   Returns a pointer to the new end of the variable_buffer.  */
+
+char *
+expand_variable_output (char *ptr, const char *name, size_t length)
+{
+  struct variable *v;
+  unsigned int recursive;
+  char *value;
+
+  v = lookup_variable (name, length);
+
+  if (!v)
+    warn_undefined (name, length);
+
+  /* If there's no variable by that name or it has no value, stop now.  */
+  if (!v || (v->value[0] == '\0' && !v->append))
+    return ptr;
+
+  /* Remember this since expansion could change it.  */
+  recursive = v->recursive;
+
+  value = recursive ? recursively_expand (v) : v->value;
+
+  ptr = variable_buffer_output (ptr, value, strlen (value));
+
+  if (recursive)
+    free (value);
+
+  return ptr;
+}
+
+/* Expand a simple reference to variable NAME, which is LENGTH chars long.
+   The result is written to BUF which must point into the variable_buffer.
+   If BUF is NULL, start at the beginning of the current variable_buffer.
+   Returns a pointer to the START of the expanded value of the variable.
+   The returned value is located inside variable_buffer.
+   The returned value is valid until the next call to one of the functions
+   which use variable_buffer.  expand_variable_buf may reallocate
+   variable_buffer and render the passed-in BUF invalid.  */
+
+
+char *
+expand_variable_buf (char *buf, const char *name, size_t length)
+{
+  size_t offs;
+
+  if (!buf)
+    buf = initialize_variable_output ();
+
+  assert (buf >= variable_buffer);
+  assert (buf < variable_buffer + variable_buffer_length);
+  offs = buf - variable_buffer;
+
+  expand_variable_output (buf, name, length);
+  return variable_buffer + offs;
+}
+
+/* Expand a simple reference to variable NAME, which is LENGTH chars long.
+   Returns an allocated buffer containing the value.  */
+
+char *
+allocated_expand_variable (const char *name, size_t length)
+{
+  char *obuf;
+  size_t olen;
+
+  install_variable_buffer (&obuf, &olen);
+
+  expand_variable_output (variable_buffer, name, length);
+
+  return swap_variable_buffer (obuf, olen);
+}
+
+/* Expand a simple reference to variable NAME, which is LENGTH chars long.
+   Error messages refer to the file and line where FILE's commands were found.
+   Expansion uses FILE's variable set list.
+   Returns an allocated buffer containing the value.  */
+
+char *
+allocated_expand_variable_for_file (const char *name, size_t length, struct file *file)
+{
+  char *result;
+  struct variable_set_list *savev;
+  const floc *savef;
+
+  if (!file)
+    return allocated_expand_variable (name, length);
+
+  install_file_context (file, &savev, &savef);
+
+  result = allocated_expand_variable (name, length);
+
+  restore_file_context (savev, savef);
+
+  return result;
+}
+
+/* Scan STRING for variable references and expansion-function calls.  Only
+   LENGTH bytes of STRING are actually scanned.
+   If LENGTH is SIZE_MAX, scan until a null byte is found.
+
+   Write the results to BUF, which must point into variable_buffer.  If
+   BUF is NULL, start at the beginning of the current variable_buffer.
+
+   Return a pointer to BUF, or to the beginning of the new buffer if BUF is
+   NULL.
+ */
+char *
+expand_string_buf (char *buf, const char *string, size_t length)
+{
+  struct variable *v;
+  const char *p, *p1;
+  char *save;
+  char *o;
+  size_t line_offset;
+
+  if (!buf)
+    buf = initialize_variable_output ();
+  o = buf;
+  line_offset = buf - variable_buffer;
+
+  if (length == 0)
+    return variable_buffer;
+
+  /* We need a copy of STRING: due to eval, it's possible that it will get
+     freed as we process it (it might be the value of a variable that's reset
+     for example).  Also having a nil-terminated string is handy.  */
+  save = length == SIZE_MAX ? xstrdup (string) : xstrndup (string, length);
+  p = save;
+
+  while (1)
+    {
+      /* Copy all following uninteresting chars all at once to the
+         variable output buffer, and skip them.  Uninteresting chars end
+         at the next $ or the end of the input.  */
+
+      p1 = strchr (p, '$');
+
+      o = variable_buffer_output (o, p, p1 != 0 ? (size_t) (p1 - p) : strlen (p) + 1);
+
+      if (p1 == 0)
+        break;
+      p = p1 + 1;
+
+      /* Dispatch on the char that follows the $.  */
+
+      switch (*p)
+        {
+        case '$':
+        case '\0':
+          /* $$ or $ at the end of the string means output one $ to the
+             variable output buffer.  */
+          o = variable_buffer_output (o, p1, 1);
+          break;
+
+        case '(':
+        case '{':
+          /* $(...) or ${...} is the general case of substitution.  */
+          {
+            char openparen = *p;
+            char closeparen = (openparen == '(') ? ')' : '}';
+            const char *beg = p + 1;
+            char *abeg = NULL;
+            const char *end, *colon;
+
+            if (handle_function (&o, &p))
+              break;
+
+            /* Is there a variable reference inside the parens or braces?
+               If so, expand it before expanding the entire reference.  */
+
+            end = strchr (beg, closeparen);
+            if (end == NULL)
+              /* Unterminated variable reference.  */
+              O (fatal, *expanding_var, _("unterminated variable reference"));
+            p1 = lindex (beg, end, '$');
+            if (p1 != NULL)
+              {
+                /* BEG now points past the opening paren or brace.
+                   Count parens or braces until it is matched.  */
+                int count = 1;
+                for (p = beg; *p != '\0'; ++p)
+                  {
+                    if (*p == openparen)
+                      ++count;
+                    else if (*p == closeparen && --count == 0)
+                      break;
+                  }
+                /* If COUNT is > 0, there were unmatched opening parens
+                   or braces, so we go to the simple case of a variable name
+                   such as '$($(a)'.  */
+                if (count == 0)
+                  {
+                    /* Expand the name.  */
+                    abeg = expand_argument (beg, p);
+                    beg = abeg;
+                    end = strchr (beg, '\0');
+                  }
+              }
+            else
+              /* Advance P to the end of this reference.  After we are
+                 finished expanding this one, P will be incremented to
+                 continue the scan.  */
+              p = end;
+
+            /* This is not a reference to a built-in function and
+               any variable references inside are now expanded.
+               Is the resultant text a substitution reference?  */
+
+            colon = lindex (beg, end, ':');
+            if (colon)
+              {
+                /* This looks like a substitution reference: $(FOO:A=B).  */
+                const char *subst_beg = colon + 1;
+                const char *subst_end = lindex (subst_beg, end, '=');
+                if (subst_end == 0)
+                  /* There is no = in sight.  Punt on the substitution
+                     reference and treat this as a variable name containing
+                     a colon, in the code below.  */
+                  colon = 0;
+                else
+                  {
+                    const char *replace_beg = subst_end + 1;
+                    const char *replace_end = end;
+
+                    /* Extract the variable name before the colon
+                       and look up that variable.  */
+                    v = lookup_variable (beg, colon - beg);
+                    if (v == 0)
+                      warn_undefined (beg, colon - beg);
+
+                    /* If the variable is not empty, perform the
+                       substitution.  */
+                    if (v != 0 && *v->value != '\0')
+                      {
+                        char *pattern, *replace, *ppercent, *rpercent;
+                        char *value = (v->recursive
+                                       ? recursively_expand (v)
+                                       : v->value);
+
+                        /* Copy the pattern and the replacement.  Add in an
+                           extra % at the beginning to use in case there
+                           isn't one in the pattern.  */
+                        pattern = alloca (subst_end - subst_beg + 2);
+                        *(pattern++) = '%';
+                        memcpy (pattern, subst_beg, subst_end - subst_beg);
+                        pattern[subst_end - subst_beg] = '\0';
+
+                        replace = alloca (replace_end - replace_beg + 2);
+                        *(replace++) = '%';
+                        memcpy (replace, replace_beg,
+                               replace_end - replace_beg);
+                        replace[replace_end - replace_beg] = '\0';
+
+                        /* Look for %.  Set the percent pointers properly
+                           based on whether we find one or not.  */
+                        ppercent = find_percent (pattern);
+                        if (ppercent)
+                          {
+                            ++ppercent;
+                            rpercent = find_percent (replace);
+                            if (rpercent)
+                              ++rpercent;
+                          }
+                        else
+                          {
+                            ppercent = pattern;
+                            rpercent = replace;
+                            --pattern;
+                            --replace;
+                          }
+
+                        o = patsubst_expand_pat (o, value, pattern, replace,
+                                                 ppercent, rpercent);
+
+                        if (v->recursive)
+                          free (value);
+                      }
+                  }
+              }
+
+            if (colon == 0)
+              /* This is an ordinary variable reference.
+                 Look up the value of the variable.  */
+                o = expand_variable_output (o, beg, end - beg);
+
+            free (abeg);
+          }
+          break;
+
+        default:
+          if (ISSPACE (p[-1]))
+            break;
+
+          /* A $ followed by a random char is a variable reference:
+             $a is equivalent to $(a).  */
+          o = expand_variable_output (o, p, 1);
+
+          break;
+        }
+
+      if (*p == '\0')
+        break;
+
+      ++p;
+    }
+
+  free (save);
+
+  return (variable_buffer + line_offset);
+}
+
+
+/* Expand an argument for an expansion function.
+   The text starting at STR and ending at END is variable-expanded
+   into a null-terminated string that is returned as the value.
+   This is done without clobbering 'variable_buffer' or the current
+   variable-expansion that is in progress.  */
+
+char *
+expand_argument (const char *str, const char *end)
+{
+  char *tmp, *alloc = NULL;
+  char *r;
+
+  if (str == end)
+    return xstrdup ("");
+
+  if (!end || *end == '\0')
+    return allocated_expand_string (str);
+
+  if (end - str + 1 > 1000)
+    tmp = alloc = xmalloc (end - str + 1);
+  else
+    tmp = alloca (end - str + 1);
+
+  memcpy (tmp, str, end - str);
+  tmp[end - str] = '\0';
+
+  r = allocated_expand_string (tmp);
+
+  free (alloc);
+
+  return r;
+}
+
+
+/* Expand STRING for FILE, into the current variable_buffer.
+   Error messages refer to the file and line where FILE's commands were found.
+   Expansion uses FILE's variable set list.  */
+
+char *
+expand_string_for_file (const char *string, struct file *file)
+{
+  char *result;
+  struct variable_set_list *savev;
+  const floc *savef;
+
+  if (!file)
+    return expand_string (string);
+
+  install_file_context (file, &savev, &savef);
+
+  result = expand_string (string);
+
+  restore_file_context (savev, savef);
+
+  return result;
+}
+
+/* Like expand_string_for_file, but the returned string is malloc'd.  */
+
+char *
+allocated_expand_string_for_file (const char *string, struct file *file)
+{
+  char *obuf;
+  size_t olen;
+
+  install_variable_buffer (&obuf, &olen);
+
+  expand_string_for_file (string, file);
+
+  return swap_variable_buffer (obuf, olen);
+}
+
+/* Like allocated_expand_string, but for += target-specific variables.
+   First recursively construct the variable value from its appended parts in
+   any upper variable sets.  Then expand the resulting value.  */
+
+static char *
+variable_append (const char *name, size_t length,
+                 const struct variable_set_list *set, int local)
+{
+  const struct variable *v;
+  char *buf = 0;
+  int nextlocal;
+
+  /* If there's nothing left to check, return the empty buffer.  */
+  if (!set)
+    return initialize_variable_output ();
+
+  /* If this set is local and the next is not a parent, then next is local.  */
+  nextlocal = local && set->next_is_parent == 0;
+
+  /* Try to find the variable in this variable set.  */
+  v = lookup_variable_in_set (name, length, set->set);
+
+  /* If there isn't one, or this one is private, try the set above us.  */
+  if (!v || (!local && v->private_var))
+    return variable_append (name, length, set->next, nextlocal);
+
+  /* If this variable type is append, first get any upper values.
+     If not, initialize the buffer.  */
+  if (v->append)
+    buf = variable_append (name, length, set->next, nextlocal);
+  else
+    buf = initialize_variable_output ();
+
+  /* Append this value to the buffer, and return it.
+     If we already have a value, first add a space.  */
+  if (buf > variable_buffer)
+    buf = variable_buffer_output (buf, " ", 1);
+
+  /* Either expand it or copy it, depending.  */
+  if (! v->recursive)
+    return variable_buffer_output (buf, v->value, strlen (v->value));
+
+  buf = expand_string_buf (buf, v->value, strlen (v->value));
+  return (buf + strlen (buf));
+}
+
+
+static char *
+allocated_variable_append (const struct variable *v)
+{
+  /* Construct the appended variable value.  */
+  char *obuf;
+  size_t olen;
+
+  install_variable_buffer (&obuf, &olen);
+
+  variable_append (v->name, strlen (v->name), current_variable_set_list, 1);
+
+  return swap_variable_buffer (obuf, olen);
+}

src/filedef.h

@@ -0,0 +1,230 @@
+/* Definition of target file data structures for GNU Make.
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+
+/* Structure that represents the info on one file
+   that the makefile says how to make.
+   All of these are chained together through 'next'.  */
+
+#include "hash.h"
+
+struct commands;
+struct dep;
+struct variable;
+struct variable_set_list;
+
+struct file
+  {
+    const char *name;
+    const char *hname;          /* Hashed filename */
+    const char *vpath;          /* VPATH/vpath pathname */
+    struct dep *deps;           /* all dependencies, including duplicates */
+    struct commands *cmds;      /* Commands to execute for this target.  */
+    const char *stem;           /* Implicit stem, if an implicit
+                                   rule has been used */
+    struct dep *also_make;      /* Targets that are made by making this.  */
+    struct file *prev;          /* Previous entry for same file name;
+                                   used when there are multiple double-colon
+                                   entries for the same file.  */
+    struct file *last;          /* Last entry for the same file name.  */
+
+    /* File that this file was renamed to.  After any time that a
+       file could be renamed, call 'check_renamed' (below).  */
+    struct file *renamed;
+
+    /* List of variable sets used for this file.  */
+    struct variable_set_list *variables;
+
+    /* Pattern-specific variable reference for this target, or null if there
+       isn't one.  Also see the pat_searched flag, below.  */
+    struct variable_set_list *pat_variables;
+
+    /* Immediate dependent that caused this target to be remade,
+       or nil if there isn't one.  */
+    struct file *parent;
+
+    /* For a double-colon entry, this is the first double-colon entry for
+       the same file.  Otherwise this is null.  */
+    struct file *double_colon;
+
+    FILE_TIMESTAMP last_mtime;  /* File's modtime, if already known.  */
+    FILE_TIMESTAMP mtime_before_update; /* File's modtime before any updating
+                                           has been performed.  */
+    unsigned int considered;    /* equal to 'considered' if file has been
+                                   considered on current scan of goal chain */
+    int command_flags;          /* Flags OR'd in for cmds; see commands.h.  */
+    enum update_status          /* Status of the last attempt to update.  */
+      {
+        us_success = 0,         /* Successfully updated.  Must be 0!  */
+        us_none,                /* No attempt to update has been made.  */
+        us_question,            /* Needs to be updated (-q is is set).  */
+        us_failed               /* Update failed.  */
+      } update_status ENUM_BITFIELD (2);
+    enum cmd_state              /* State of commands.  ORDER IS IMPORTANT!  */
+      {
+        cs_not_started = 0,     /* Not yet started.  Must be 0!  */
+        cs_deps_running,        /* Dep commands running.  */
+        cs_running,             /* Commands running.  */
+        cs_finished             /* Commands finished.  */
+      } command_state ENUM_BITFIELD (2);
+
+    unsigned int builtin:1;     /* True if the file is a builtin rule. */
+    unsigned int precious:1;    /* Non-0 means don't delete file on quit */
+    unsigned int loaded:1;      /* True if the file is a loaded object. */
+    unsigned int unloaded:1;    /* True if this loaded object was unloaded. */
+    unsigned int low_resolution_time:1; /* Nonzero if this file's time stamp
+                                           has only one-second resolution.  */
+    unsigned int tried_implicit:1; /* Nonzero if have searched
+                                      for implicit rule for making
+                                      this file; don't search again.  */
+    unsigned int updating:1;    /* Nonzero while updating deps of this file */
+    unsigned int updated:1;     /* Nonzero if this file has been remade.  */
+    unsigned int is_target:1;   /* Nonzero if file is described as target.  */
+    unsigned int cmd_target:1;  /* Nonzero if file was given on cmd line.  */
+    unsigned int phony:1;       /* Nonzero if this is a phony file
+                                   i.e., a prerequisite of .PHONY.  */
+    unsigned int intermediate:1;/* Nonzero if this is an intermediate file.  */
+    unsigned int is_explicit:1; /* Nonzero if explicitly mentioned. */
+    unsigned int secondary:1;   /* Nonzero means remove_intermediates should
+                                   not delete it.  */
+    unsigned int notintermediate:1; /* Nonzero means a file is a prereq to
+                                       .NOTINTERMEDIATE.  */
+    unsigned int dontcare:1;    /* Nonzero if no complaint is to be made if
+                                   this target cannot be remade.  */
+    unsigned int ignore_vpath:1;/* Nonzero if we threw out VPATH name.  */
+    unsigned int pat_searched:1;/* Nonzero if we already searched for
+                                   pattern-specific variables.  */
+    unsigned int no_diag:1;     /* True if the file failed to update and no
+                                   diagnostics has been issued (dontcare). */
+    unsigned int was_shuffled:1; /* Did we already shuffle 'deps'? used when
+                                    --shuffle passes through the graph.  */
+    unsigned int snapped:1;     /* True if the deps of this file have been
+                                   secondary expanded.  */
+    unsigned int suffix:1;      /* True if this is a suffix rule. */
+  };
+
+
+extern struct file *default_file;
+
+
+struct file *lookup_file (const char *name);
+struct file *enter_file (const char *name);
+struct dep *split_prereqs (char *prereqstr);
+struct dep *enter_prereqs (struct dep *prereqs, const char *stem);
+void expand_deps (struct file *f);
+struct dep *expand_extra_prereqs (const struct variable *extra);
+void remove_intermediates (int sig);
+void snap_deps (void);
+void rename_file (struct file *file, const char *name);
+void rehash_file (struct file *file, const char *name);
+void set_command_state (struct file *file, enum cmd_state state);
+void notice_finished_file (struct file *file);
+void init_hash_files (void);
+void verify_file_data_base (void);
+char *build_target_list (char *old_list);
+void print_file_data_base (void);
+void print_targets (void);
+int try_implicit_rule (struct file *file, unsigned int depth);
+int stemlen_compare (const void *v1, const void *v2);
+
+#if FILE_TIMESTAMP_HI_RES
+# define FILE_TIMESTAMP_STAT_MODTIME(fname, st) \
+    file_timestamp_cons (fname, (st).st_mtime, (st).ST_MTIM_NSEC)
+#else
+# define FILE_TIMESTAMP_STAT_MODTIME(fname, st) \
+    file_timestamp_cons (fname, (st).st_mtime, 0)
+#endif
+
+/* If FILE_TIMESTAMP is 64 bits (or more), use nanosecond resolution.
+   (Multiply by 2**30 instead of by 10**9 to save time at the cost of
+   slightly decreasing the number of available timestamps.)  With
+   64-bit FILE_TIMESTAMP, this stops working on 2514-05-30 01:53:04
+   UTC, but by then uintmax_t should be larger than 64 bits.  */
+#define FILE_TIMESTAMPS_PER_S (FILE_TIMESTAMP_HI_RES ? 1000000000 : 1)
+#define FILE_TIMESTAMP_LO_BITS (FILE_TIMESTAMP_HI_RES ? 30 : 0)
+
+#define FILE_TIMESTAMP_S(ts) (((ts) - ORDINARY_MTIME_MIN) \
+                              >> FILE_TIMESTAMP_LO_BITS)
+#define FILE_TIMESTAMP_NS(ts) ((int) (((ts) - ORDINARY_MTIME_MIN) \
+                                      & ((1 << FILE_TIMESTAMP_LO_BITS) - 1)))
+
+/* Upper bound on length of string "YYYY-MM-DD HH:MM:SS.NNNNNNNNN"
+   representing a file timestamp.  The upper bound is not necessarily 29,
+   since the year might be less than -999 or greater than 9999.
+
+   Subtract one for the sign bit if in case file timestamps can be negative;
+   subtract FLOOR_LOG2_SECONDS_PER_YEAR to yield an upper bound on how many
+   file timestamp bits might affect the year;
+   302 / 1000 is log10 (2) rounded up;
+   add one for integer division truncation;
+   add one more for a minus sign if file timestamps can be negative;
+   add 4 to allow for any 4-digit epoch year (e.g. 1970);
+   add 25 to allow for "-MM-DD HH:MM:SS.NNNNNNNNN".  */
+#define FLOOR_LOG2_SECONDS_PER_YEAR 24
+#define FILE_TIMESTAMP_PRINT_LEN_BOUND \
+  (((sizeof (FILE_TIMESTAMP) * CHAR_BIT - 1 - FLOOR_LOG2_SECONDS_PER_YEAR) \
+    * 302 / 1000) \
+   + 1 + 1 + 4 + 25)
+
+FILE_TIMESTAMP file_timestamp_cons (char const *, time_t, long int);
+FILE_TIMESTAMP file_timestamp_now (int *);
+void file_timestamp_sprintf (char *p, FILE_TIMESTAMP ts);
+
+/* Return the mtime of file F (a struct file *), caching it.
+   The value is NONEXISTENT_MTIME if the file does not exist.  */
+#define file_mtime(f) file_mtime_1 ((f), 1)
+/* Return the mtime of file F (a struct file *), caching it.
+   Don't search using vpath for the file--if it doesn't actually exist,
+   we don't find it.
+   The value is NONEXISTENT_MTIME if the file does not exist.  */
+#define file_mtime_no_search(f) file_mtime_1 ((f), 0)
+FILE_TIMESTAMP f_mtime (struct file *file, int search);
+#define file_mtime_1(f, v) \
+  ((f)->last_mtime == UNKNOWN_MTIME ? f_mtime ((f), v) : (f)->last_mtime)
+
+/* Special timestamp values.  */
+
+/* The file's timestamp is not yet known.  */
+#define UNKNOWN_MTIME 0
+
+/* The file does not exist.  */
+#define NONEXISTENT_MTIME 1
+
+/* The file does not exist, and we assume that it is older than any
+   actual file.  */
+#define OLD_MTIME 2
+
+/* The smallest and largest ordinary timestamps.  */
+#define ORDINARY_MTIME_MIN (OLD_MTIME + 1)
+#define ORDINARY_MTIME_MAX ((FILE_TIMESTAMP_S (NEW_MTIME) \
+                             << FILE_TIMESTAMP_LO_BITS) \
+                            + ORDINARY_MTIME_MIN + FILE_TIMESTAMPS_PER_S - 1)
+
+#define is_ordinary_mtime(_t) ((_t) >= ORDINARY_MTIME_MIN && (_t) <= ORDINARY_MTIME_MAX)
+
+/* Modtime value to use for 'infinitely new'.  We used to get the current time
+   from the system and use that whenever we wanted 'new'.  But that causes
+   trouble when the machine running make and the machine holding a file have
+   different ideas about what time it is; and can also lose for 'force'
+   targets, which need to be considered newer than anything that depends on
+   them, even if said dependents' modtimes are in the future.  */
+#define NEW_MTIME INTEGER_TYPE_MAXIMUM (FILE_TIMESTAMP)
+
+#define check_renamed(file) \
+  while ((file)->renamed != 0) (file) = (file)->renamed /* No ; here.  */
+
+/* Have we snapped deps yet?  */
+extern int snapped_deps;

src/getopt.h

@@ -0,0 +1,130 @@
+/* Declarations for getopt.
+Copyright (C) 1989-2024 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_H
+#define _GETOPT_H 1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of `struct option' terminated by an element containing a name which is
+   zero.
+
+   The field `has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field `flag' is not NULL, it points to a variable that is set
+   to the value given in the field `val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an `int' to
+   a compiled-in constant, such as set a value from `optarg', set the
+   option's `flag' field to zero and its `val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero `flag' field, `getopt'
+   returns the contents of the `val' field.  */
+
+struct option
+{
+#if defined (__STDC__) && __STDC__
+  const char *name;
+#else
+  char *name;
+#endif
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'.  */
+
+#define	no_argument		0
+#define required_argument	1
+#define optional_argument	2
+
+#if defined (__STDC__) && __STDC__
+#ifdef __GNU_LIBRARY__
+/* Many other libraries have conflicting prototypes for getopt, with
+   differences in the consts, in stdlib.h.  To avoid compilation
+   errors, only prototype getopt for the GNU C library.  */
+extern int getopt (int argc, char *const *argv, const char *shortopts);
+#else /* not __GNU_LIBRARY__ */
+extern int getopt ();
+#endif /* __GNU_LIBRARY__ */
+extern int getopt_long (int argc, char *const *argv, const char *shortopts,
+		        const struct option *longopts, int *longind);
+extern int getopt_long_only (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct option *longopts, int *longind);
+
+/* Internal only.  Users should not call this directly.  */
+extern int _getopt_internal (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct option *longopts, int *longind,
+			     int long_only);
+#else /* not __STDC__ */
+extern int getopt ();
+extern int getopt_long ();
+extern int getopt_long_only ();
+
+extern int _getopt_internal ();
+#endif /* __STDC__ */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* getopt.h */

src/getopt1.c

@@ -0,0 +1,176 @@
+/* getopt_long and getopt_long_only entry points for GNU getopt.
+Copyright (C) 1987-1994, 1996-2024 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "getopt.h"
+
+#if !defined __STDC__ || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+#ifndef const
+#define const
+#endif
+#endif
+
+#include <stdio.h>
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GETOPT_INTERFACE_VERSION 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
+#include <gnu-versions.h>
+#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
+#define ELIDE_CODE
+#endif
+#endif
+
+#ifndef ELIDE_CODE
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef __GNU_LIBRARY__
+#include <stdlib.h>
+#endif
+
+#ifndef	NULL
+#define NULL 0
+#endif
+
+int
+getopt_long (int argc, char *const *argv, const char *options,
+             const struct option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
+}
+
+/* Like getopt_long, but '-' as well as '--' can indicate a long option.
+   If an option that starts with '-' (not '--') doesn't match a long option,
+   but does match a short option, it is parsed as a short option
+   instead.  */
+
+int
+getopt_long_only (int argc, char *const *argv, const char *options,
+                  const struct option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
+}
+
+
+#endif	/* Not ELIDE_CODE.  */
+
+#ifdef TEST
+
+#include <stdio.h>
+
+int
+main (int argc, char **argv)
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+      int option_index = 0;
+      static struct option long_options[] =
+      {
+	{"add", 1, 0, 0},
+	{"append", 0, 0, 0},
+	{"delete", 1, 0, 0},
+	{"verbose", 0, 0, 0},
+	{"create", 0, 0, 0},
+	{"file", 1, 0, 0},
+	{0, 0, 0, 0}
+      };
+
+      c = getopt_long (argc, argv, "abc:d:0123456789",
+		       long_options, &option_index);
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case 0:
+	  printf ("option %s", long_options[option_index].name);
+	  if (optarg)
+	    printf (" with arg %s", optarg);
+	  printf ("\n");
+	  break;
+
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value '%s'\n", optarg);
+	  break;
+
+	case 'd':
+	  printf ("option d with value '%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */

src/gettext.h

@@ -0,0 +1,57 @@
+/* Convenience header for conditional use of GNU <libintl.h>.
+Copyright (C) 1995-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBGETTEXT_H
+#define _LIBGETTEXT_H 1
+
+/* NLS can be disabled through the configure --disable-nls option.  */
+#if ENABLE_NLS
+
+/* Get declarations of GNU message catalog functions.  */
+# include <libintl.h>
+
+#else
+
+/* Disabled NLS.
+   The casts to 'const char *' serve the purpose of producing warnings
+   for invalid uses of the value returned from these functions.
+   On pre-ANSI systems without 'const', the config.h file is supposed to
+   contain "#define const".  */
+# define gettext(Msgid) ((const char *) (Msgid))
+# define dgettext(Domainname, Msgid) ((const char *) (Msgid))
+# define dcgettext(Domainname, Msgid, Category) ((const char *) (Msgid))
+# define ngettext(Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dngettext(Domainname, Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define textdomain(Domainname) ((const char *) (Domainname))
+# define bindtextdomain(Domainname, Dirname) ((const char *) (Dirname))
+# define bind_textdomain_codeset(Domainname, Codeset) ((const char *) (Codeset))
+
+#endif
+
+/* A pseudo function call that serves as a marker for the automated
+   extraction of messages, but does not call gettext().  The run-time
+   translation is done at a different place in the code.
+   The argument, String, should be a literal string.  Concatenated strings
+   and other string expressions won't work.
+   The macro's expansion is not parenthesized, so that it is suitable as
+   initializer for static 'char[]' or 'const char[]' variables.  */
+#define gettext_noop(String) String
+
+#endif /* _LIBGETTEXT_H */

src/gmk-default.scm

@@ -0,0 +1,53 @@
+;; Contents of the (GNU Make) Guile module
+;; Copyright (C) 2011-2024 Free Software Foundation, Inc.
+;; This file is part of GNU Make.
+;;
+;; GNU Make is free software; you can redistribute it and/or modify it under
+;; the terms of the GNU General Public License as published by the Free
+;; Software Foundation; either version 3 of the License, or (at your option)
+;; any later version.
+;;
+;; GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+;; WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+;; FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+;; details.
+;;
+;; You should have received a copy of the GNU General Public License along
+;; with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+(define (to-string-maybe x)
+  (cond
+   ;; In GNU Make, "false" is the empty string
+   ((or (not x)
+        (unspecified? x)
+        (variable? x)
+        (null? x)
+        (and (string? x) (string-null? x)))
+    #f)
+   ;; We want something not false... not sure about this
+   ((eq? x #t) "#t")
+   ;; Basics
+   ((or (symbol? x) (number? x))
+    (object->string x))
+   ((char? x)
+    (string x))
+   ;; Printable string (no special characters)
+   ((and (string? x) (string-every char-set:printing x))
+    x)
+   ;; No idea: fail
+   (else (error "Unknown object:" x))))
+
+(define (obj-to-str x)
+  (let ((acc '()))
+    (define (walk x)
+      (cond ((pair? x) (walk (car x)) (walk (cdr x)))
+            ((to-string-maybe x) => (lambda (s) (set! acc (cons s acc))))))
+    (walk x)
+    (string-join (reverse! acc))))
+
+;; Return the value of the GNU Make variable V
+(define (gmk-var v)
+  (gmk-expand (format #f "$(~a)" (obj-to-str v))))
+
+;; Export the public interfaces
+(export gmk-expand gmk-eval gmk-var)

src/gnumake.h

@@ -0,0 +1,97 @@
+/* External interfaces usable by dynamic objects loaded into GNU Make.
+
+Copyright (C) 2013-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GNUMAKE_H_
+#define _GNUMAKE_H_
+
+#define GMK_ABI_VERSION 1
+
+/* Specify the location of elements read from makefiles.  */
+typedef struct
+  {
+    const char *filenm;
+    unsigned long lineno;
+  } gmk_floc;
+
+typedef char *(*gmk_func_ptr)(const char *nm, unsigned int argc, char **argv);
+
+/* When an object is loaded by GNU Make, a setup method will be invoked.
+   The name of the method is either derived from the filename of the object,
+   or specified explicitly in the makefile.  It has the signature:
+
+     int <setup_fn> (unsigned int abi_version, const gmk_floc *flocp);
+
+   The abi_version will be set to GMK_ABI_VERSION.
+
+   When an object is unloaded by GNU Make, an unload method will be invoked.
+   The name of the method is derived from the filename of the object, with
+   _gmk_unload appended.  It has the signature:
+
+     void <object>_gmk_unload (void);
+
+  There will only be one unload method invoked regardless of the number of
+  setup methods within the object.  */
+
+#ifdef _WIN32
+# ifdef GMK_BUILDING_MAKE
+#  define GMK_EXPORT  __declspec(dllexport)
+# else
+#  define GMK_EXPORT  __declspec(dllimport)
+# endif
+#else
+# define GMK_EXPORT
+#endif
+
+/* Free memory returned by the gmk_expand() and gmk_free() functions.  */
+GMK_EXPORT void gmk_free (char *str);
+
+/* Allocate memory in GNU Make's context.  */
+GMK_EXPORT char *gmk_alloc (unsigned int len);
+
+/* Run $(eval ...) on the provided string BUFFER.  */
+GMK_EXPORT void gmk_eval (const char *buffer, const gmk_floc *floc);
+
+/* Run GNU Make expansion on the provided string STR.
+   Returns an allocated buffer that the caller must free with gmk_free().  */
+GMK_EXPORT char *gmk_expand (const char *str);
+
+/* Register a new GNU Make function NAME (maximum of 255 chars long).
+   When the function is expanded in the makefile, FUNC will be invoked with
+   the appropriate arguments.
+
+   The return value of FUNC must be either NULL, in which case it expands to
+   the empty string, or a pointer to the result of the expansion in a string
+   created by gmk_alloc().  GNU Make will free the memory when it's done.
+
+   MIN_ARGS is the minimum number of arguments the function requires.
+   MAX_ARGS is the maximum number of arguments (or 0 if there's no maximum).
+   MIN_ARGS and MAX_ARGS may not exceed 255.
+
+   The FLAGS value may be GMK_FUNC_DEFAULT, or one or more of the following
+   flags OR'd together:
+
+     GMK_FUNC_NOEXPAND: the arguments to the function will be not be expanded
+                        before FUNC is called.
+*/
+GMK_EXPORT void gmk_add_function (const char *name, gmk_func_ptr func,
+                                  unsigned int min_args, unsigned int max_args,
+                                  unsigned int flags);
+
+#define GMK_FUNC_DEFAULT    0x00
+#define GMK_FUNC_NOEXPAND   0x01
+
+#endif  /* _GNUMAKE_H_ */

src/guile.c

@@ -0,0 +1,159 @@
+/* GNU Guile interface for GNU Make.
+Copyright (C) 2011-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#ifdef HAVE_GUILE
+
+#include "gnumake.h"
+
+#include "debug.h"
+#include "filedef.h"
+#include "dep.h"
+#include "variable.h"
+
+#include <libguile.h>
+
+/* Pre-2.0 versions of Guile don't have a typedef for gsubr function types.  */
+#if SCM_MAJOR_VERSION < 2
+# define GSUBR_TYPE         SCM (*) ()
+/* Guile 1.x doesn't really support i18n.  */
+# define EVAL_STRING(_s)    scm_c_eval_string (_s)
+#else
+# define GSUBR_TYPE         scm_t_subr
+# define EVAL_STRING(_s)    scm_eval_string (scm_from_utf8_string (_s))
+#endif
+
+static SCM make_mod = SCM_EOL;
+static SCM obj_to_str = SCM_EOL;
+
+/* Convert an SCM object into a string.  */
+static char *
+cvt_scm_to_str (SCM obj)
+{
+  return scm_to_locale_string (scm_call_1 (obj_to_str, obj));
+}
+
+/* Perform the GNU Make expansion function.  */
+static SCM
+guile_expand_wrapper (SCM obj)
+{
+  char *str = cvt_scm_to_str (obj);
+  SCM ret;
+  char *res;
+
+  DB (DB_BASIC, (_("guile: Expanding '%s'\n"), str));
+  res = gmk_expand (str);
+  ret = scm_from_locale_string (res);
+
+  free (str);
+  free (res);
+
+  return ret;
+}
+
+/* Perform the GNU Make eval function.  */
+static SCM
+guile_eval_wrapper (SCM obj)
+{
+  char *str = cvt_scm_to_str (obj);
+
+  DB (DB_BASIC, (_("guile: Evaluating '%s'\n"), str));
+  gmk_eval (str, 0);
+
+  return SCM_BOOL_F;
+}
+
+/* Invoked by scm_c_define_module(), in the context of the GNU Make module.  */
+static void
+guile_define_module (void *data UNUSED)
+{
+/* Ingest the predefined Guile module for GNU Make.  */
+#include "gmk-default.h"
+
+  /* Register a subr for GNU Make's eval capability.  */
+  scm_c_define_gsubr ("gmk-expand", 1, 0, 0, (GSUBR_TYPE) guile_expand_wrapper);
+
+  /* Register a subr for GNU Make's eval capability.  */
+  scm_c_define_gsubr ("gmk-eval", 1, 0, 0, (GSUBR_TYPE) guile_eval_wrapper);
+
+  /* Define the rest of the module.  */
+  scm_c_eval_string (GUILE_module_defn);
+}
+
+/* Initialize the GNU Make Guile module.  */
+static void *
+guile_init (void *arg UNUSED)
+{
+  /* Define the module.  */
+  make_mod = scm_c_define_module ("gnu make", guile_define_module, NULL);
+
+  /* Get a reference to the object-to-string translator, for later.  */
+  obj_to_str = scm_variable_ref (scm_c_module_lookup (make_mod, "obj-to-str"));
+
+  /* Import the GNU Make module exports into the generic space.  */
+  scm_c_eval_string ("(use-modules (gnu make))");
+
+  return NULL;
+}
+
+static void *
+internal_guile_eval (void *arg)
+{
+  return cvt_scm_to_str (EVAL_STRING (arg));
+}
+
+/* This is the function registered with make  */
+static char *
+func_guile (const char *funcname UNUSED, unsigned int argc UNUSED, char **argv)
+{
+  static int init = 0;
+
+  if (! init)
+    {
+      /* Initialize the Guile interpreter.  */
+      scm_with_guile (guile_init, NULL);
+      init = 1;
+    }
+
+  if (argv[0] && argv[0][0] != '\0')
+    return scm_with_guile (internal_guile_eval, argv[0]);
+
+  return NULL;
+}
+
+/* ----- Public interface ----- */
+
+/* We could send the flocp to define_new_function(), but since guile is
+   "kind of" built-in, that didn't seem so useful.  */
+int
+guile_gmake_setup (const floc *flocp UNUSED)
+{
+  /* Create a make function "guile".  */
+  gmk_add_function ("guile", func_guile, 0, 1, GMK_FUNC_DEFAULT);
+
+  return 1;
+}
+
+#else
+
+int
+guile_gmake_setup (const floc *flocp UNUSED)
+{
+  return 1;
+}
+
+#endif

src/hash.c

@@ -0,0 +1,501 @@
+/* hash.c -- hash table maintenance
+Copyright (C) 1995, 1999, 2002, 2010 Free Software Foundation, Inc.
+Written by Greg McGary <gkm@gnu.org> <greg@mcgary.org>
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "hash.h"
+#include <assert.h>
+
+#define CALLOC(t, n) ((t *) xcalloc (sizeof (t) * (n)))
+#define MALLOC(t, n) ((t *) xmalloc (sizeof (t) * (n)))
+#define REALLOC(o, t, n) ((t *) xrealloc ((o), sizeof (t) * (n)))
+#define CLONE(o, t, n) ((t *) memcpy (MALLOC (t, (n)), (o), sizeof (t) * (n)))
+
+static void hash_rehash __P((struct hash_table* ht));
+static unsigned long round_up_2 __P((unsigned long rough));
+
+/* Implement double hashing with open addressing.  The table size is
+   always a power of two.  The secondary ('increment') hash function
+   is forced to return an odd-value, in order to be relatively prime
+   to the table size.  This guarantees that the increment can
+   potentially hit every slot in the table during collision
+   resolution.  */
+
+const void *hash_deleted_item = &hash_deleted_item;
+
+/* Force the table size to be a power of two, possibly rounding up the
+   given size.  */
+
+void
+hash_init (struct hash_table *ht, unsigned long size,
+           hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp)
+{
+  ht->ht_size = round_up_2 (size);
+  ht->ht_empty_slots = ht->ht_size;
+  ht->ht_vec = CALLOC (void *, ht->ht_size);
+  if (ht->ht_vec == 0)
+    {
+      fprintf (stderr, _("can't allocate %lu bytes for hash table: memory exhausted"),
+               ht->ht_size * (unsigned long) sizeof (void *));
+      exit (MAKE_TROUBLE);
+    }
+
+  ht->ht_capacity = ht->ht_size - (ht->ht_size / 16); /* 93.75% loading factor */
+  ht->ht_fill = 0;
+  ht->ht_collisions = 0;
+  ht->ht_lookups = 0;
+  ht->ht_rehashes = 0;
+  ht->ht_hash_1 = hash_1;
+  ht->ht_hash_2 = hash_2;
+  ht->ht_compare = hash_cmp;
+}
+
+/* Load an array of items into 'ht'.  */
+
+void
+hash_load (struct hash_table *ht, const void *item_table,
+           unsigned long cardinality, unsigned long size)
+{
+  const char *items = (const char *) item_table;
+  while (cardinality--)
+    {
+      hash_insert (ht, items);
+      items += size;
+    }
+}
+
+/* Returns the address of the table slot matching 'key'.  If 'key' is
+   not found, return the address of an empty slot suitable for
+   inserting 'key'.  The caller is responsible for incrementing
+   ht_fill on insertion.  */
+
+void **
+hash_find_slot (struct hash_table *ht, const void *key)
+{
+  void **slot;
+  void **deleted_slot = 0;
+  unsigned int hash_2 = 0;
+  unsigned int hash_1 = (*ht->ht_hash_1) (key);
+
+  ht->ht_lookups++;
+  for (;;)
+    {
+      hash_1 &= (ht->ht_size - 1);
+      slot = &ht->ht_vec[hash_1];
+
+      if (*slot == 0)
+        return (deleted_slot ? deleted_slot : slot);
+      if (*slot == hash_deleted_item)
+        {
+          if (deleted_slot == 0)
+            deleted_slot = slot;
+        }
+      else
+        {
+          if (key == *slot)
+            return slot;
+          if ((*ht->ht_compare) (key, *slot) == 0)
+            return slot;
+          ht->ht_collisions++;
+        }
+      if (!hash_2)
+          hash_2 = (*ht->ht_hash_2) (key) | 1;
+      hash_1 += hash_2;
+    }
+}
+
+void *
+hash_find_item (struct hash_table *ht, const void *key)
+{
+  void **slot = hash_find_slot (ht, key);
+  return ((HASH_VACANT (*slot)) ? 0 : *slot);
+}
+
+void *
+hash_insert (struct hash_table *ht, const void *item)
+{
+  void **slot = hash_find_slot (ht, item);
+  const void *old_item = *slot;
+  hash_insert_at (ht, item, slot);
+  return (void *)((HASH_VACANT (old_item)) ? 0 : old_item);
+}
+
+void *
+hash_insert_at (struct hash_table *ht, const void *item, const void *slot)
+{
+  const void *old_item = *(void **) slot;
+  if (HASH_VACANT (old_item))
+    {
+      ht->ht_fill++;
+      if (old_item == 0)
+        ht->ht_empty_slots--;
+      old_item = item;
+    }
+  *(void const **) slot = item;
+  if (ht->ht_empty_slots < ht->ht_size - ht->ht_capacity)
+    {
+      hash_rehash (ht);
+      return (void *) hash_find_slot (ht, item);
+    }
+  else
+    return (void *) slot;
+}
+
+void *
+hash_delete (struct hash_table *ht, const void *item)
+{
+  void **slot = hash_find_slot (ht, item);
+  return hash_delete_at (ht, slot);
+}
+
+void *
+hash_delete_at (struct hash_table *ht, const void *slot)
+{
+  void *item = *(void **) slot;
+  if (!HASH_VACANT (item))
+    {
+      *(void const **) slot = hash_deleted_item;
+      ht->ht_fill--;
+      return item;
+    }
+  else
+    return 0;
+}
+
+void
+hash_free_items (struct hash_table *ht)
+{
+  void **vec = ht->ht_vec;
+  void **end = &vec[ht->ht_size];
+  for (; vec < end; vec++)
+    {
+      void *item = *vec;
+      if (!HASH_VACANT (item))
+        free (item);
+      *vec = 0;
+    }
+  ht->ht_fill = 0;
+  ht->ht_empty_slots = ht->ht_size;
+}
+
+void
+hash_delete_items (struct hash_table *ht)
+{
+  void **vec = ht->ht_vec;
+  void **end = &vec[ht->ht_size];
+  for (; vec < end; vec++)
+    *vec = 0;
+  ht->ht_fill = 0;
+  ht->ht_collisions = 0;
+  ht->ht_lookups = 0;
+  ht->ht_rehashes = 0;
+  ht->ht_empty_slots = ht->ht_size;
+}
+
+void
+hash_free (struct hash_table *ht, int free_items)
+{
+  if (free_items)
+    hash_free_items (ht);
+  else
+    {
+      ht->ht_fill = 0;
+      ht->ht_empty_slots = ht->ht_size;
+    }
+  free (ht->ht_vec);
+  ht->ht_vec = 0;
+  ht->ht_capacity = 0;
+}
+
+void
+hash_map (struct hash_table *ht, hash_map_func_t map)
+{
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    {
+      if (!HASH_VACANT (*slot))
+        (*map) (*slot);
+    }
+}
+
+void
+hash_map_arg (struct hash_table *ht, hash_map_arg_func_t map, void *arg)
+{
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    {
+      if (!HASH_VACANT (*slot))
+        (*map) (*slot, arg);
+    }
+}
+
+/* Double the size of the hash table in the event of overflow... */
+
+static void
+hash_rehash (struct hash_table *ht)
+{
+  unsigned long old_ht_size = ht->ht_size;
+  void **old_vec = ht->ht_vec;
+  void **ovp;
+
+  if (ht->ht_fill >= ht->ht_capacity)
+    {
+      ht->ht_size *= 2;
+      ht->ht_capacity = ht->ht_size - (ht->ht_size >> 4);
+    }
+  ht->ht_rehashes++;
+  ht->ht_vec = CALLOC (void *, ht->ht_size);
+
+  for (ovp = old_vec; ovp < &old_vec[old_ht_size]; ovp++)
+    {
+      if (! HASH_VACANT (*ovp))
+        {
+          void **slot = hash_find_slot (ht, *ovp);
+          *slot = *ovp;
+        }
+    }
+  ht->ht_empty_slots = ht->ht_size - ht->ht_fill;
+  free (old_vec);
+}
+
+void
+hash_print_stats (struct hash_table *ht, FILE *out_FILE)
+{
+  fprintf (out_FILE, _("Load=%lu/%lu=%.0f%%, "), ht->ht_fill, ht->ht_size,
+           100.0 * (double) ht->ht_fill / (double) ht->ht_size);
+  fprintf (out_FILE, _("Rehash=%u, "), ht->ht_rehashes);
+  fprintf (out_FILE, _("Collisions=%lu/%lu=%.0f%%"), ht->ht_collisions, ht->ht_lookups,
+           (ht->ht_lookups
+            ? (100.0 * (double) ht->ht_collisions / (double) ht->ht_lookups)
+            : 0));
+}
+
+/* Dump all items into a NULL-terminated vector.  Use the
+   user-supplied vector, or malloc one.  */
+
+void **
+hash_dump (struct hash_table *ht, void **vector_0, qsort_cmp_t compare)
+{
+  void **vector;
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  if (vector_0 == 0)
+    vector_0 = MALLOC (void *, ht->ht_fill + 1);
+  vector = vector_0;
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    if (!HASH_VACANT (*slot))
+      *vector++ = *slot;
+  *vector = 0;
+
+  if (compare)
+    qsort (vector_0, ht->ht_fill, sizeof (void *), compare);
+  return vector_0;
+}
+
+/* Round a given number up to the nearest power of 2. */
+
+static unsigned long
+round_up_2 (unsigned long n)
+{
+  n |= (n >> 1);
+  n |= (n >> 2);
+  n |= (n >> 4);
+  n |= (n >> 8);
+  n |= (n >> 16);
+
+#if !defined(HAVE_LIMITS_H) || ULONG_MAX > 4294967295
+  /* We only need this on systems where unsigned long is >32 bits.  */
+  n |= (n >> 32);
+#endif
+
+  return n + 1;
+}
+
+#define rol32(v, n) \
+        ((v) << (n) | ((v) >> (32 - (n))))
+
+/* jhash_mix -- mix 3 32-bit values reversibly. */
+#define jhash_mix(a, b, c)                      \
+{                                               \
+        a -= c;  a ^= rol32(c, 4);  c += b;     \
+        b -= a;  b ^= rol32(a, 6);  a += c;     \
+        c -= b;  c ^= rol32(b, 8);  b += a;     \
+        a -= c;  a ^= rol32(c, 16); c += b;     \
+        b -= a;  b ^= rol32(a, 19); a += c;     \
+        c -= b;  c ^= rol32(b, 4);  b += a;     \
+}
+
+/* jhash_final - final mixing of 3 32-bit values (a,b,c) into c */
+#define jhash_final(a, b, c)                    \
+{                                               \
+        c ^= b; c -= rol32(b, 14);              \
+        a ^= c; a -= rol32(c, 11);              \
+        b ^= a; b -= rol32(a, 25);              \
+        c ^= b; c -= rol32(b, 16);              \
+        a ^= c; a -= rol32(c, 4);               \
+        b ^= a; b -= rol32(a, 14);              \
+        c ^= b; c -= rol32(b, 24);              \
+}
+
+/* An arbitrary initial parameter */
+#define JHASH_INITVAL           0xdeadbeef
+
+#define sum_get_unaligned_32(r, p)              \
+  do {                                          \
+    unsigned int val;                           \
+    memcpy (&val, (p), 4);                      \
+    r += val;                                   \
+  } while(0);
+
+unsigned int
+jhash(unsigned const char *k, int length)
+{
+  unsigned int a, b, c;
+
+  /* Set up the internal state */
+  a = b = c = JHASH_INITVAL + length;
+
+  /* All but the last block: affect some 32 bits of (a,b,c) */
+  while (length > 12) {
+    sum_get_unaligned_32(a, k);
+    sum_get_unaligned_32(b, k + 4);
+    sum_get_unaligned_32(c, k + 8);
+    jhash_mix(a, b, c);
+    length -= 12;
+    k += 12;
+  }
+
+  if (!length)
+    return c;
+
+  if (length > 8)
+    {
+      sum_get_unaligned_32(a, k);
+      length -= 4;
+      k += 4;
+    }
+  if (length > 4)
+    {
+      sum_get_unaligned_32(b, k);
+      length -= 4;
+      k += 4;
+    }
+
+  if (length == 4)
+    c += (unsigned)k[3]<<24;
+  if (length >= 3)
+    c += (unsigned)k[2]<<16;
+  if (length >= 2)
+    c += (unsigned)k[1]<<8;
+  c += k[0];
+  jhash_final(a, b, c);
+  return c;
+}
+
+#define UINTSZ sizeof (unsigned int)
+
+#ifdef WORDS_BIGENDIAN
+/* The ifs are ordered from the first byte in memory to the last.
+   Help the compiler optimize by using static memcpy length.  */
+#define sum_up_to_nul(r, p, plen, flag)   \
+  do {                                    \
+    unsigned int val = 0;                 \
+    size_t pn = (plen);                   \
+    if (pn >= UINTSZ)                     \
+      memcpy (&val, (p), UINTSZ);         \
+    else                                  \
+      memcpy (&val, (p), pn);             \
+    if ((val & 0xFF000000) == 0)          \
+      flag = 1;                           \
+    else if ((val & 0xFF0000) == 0)       \
+      r += val & ~0xFFFF, flag = 1;       \
+    else if ((val & 0xFF00) == 0)         \
+      r += val & ~0xFF, flag = 1;         \
+    else                                  \
+      r += val, flag = (val & 0xFF) == 0; \
+  } while (0)
+#else
+/* First detect the presence of zeroes.  If there is none, we can
+   sum the 4 bytes directly.  Otherwise, the ifs are ordered as in the
+   big endian case, from the first byte in memory to the last.
+   Help the compiler optimize by using static memcpy length.  */
+#define sum_up_to_nul(r, p, plen, flag)              \
+  do {                                               \
+    unsigned int val = 0;                            \
+    size_t pn = (plen);                              \
+    if (pn >= UINTSZ)                                \
+      memcpy (&val, (p), UINTSZ);                    \
+    else                                             \
+      memcpy (&val, (p), pn);                        \
+    flag = ((val - 0x01010101) & ~val) & 0x80808080; \
+    if (!flag)                                       \
+      r += val;                                      \
+    else if (val & 0xFF)                             \
+      {                                              \
+        if ((val & 0xFF00) == 0)                     \
+          r += val & 0xFF;                           \
+        else if ((val & 0xFF0000) == 0)              \
+          r += val & 0xFFFF;                         \
+        else                                         \
+          r += val;                                  \
+      }                                              \
+  } while (0)
+#endif
+
+unsigned int
+jhash_string(unsigned const char *k)
+{
+  unsigned int a, b, c;
+  unsigned int have_nul = 0;
+  unsigned const char *start = k;
+  size_t klen = strlen ((const char*)k);
+
+  /* Set up the internal state */
+  a = b = c = JHASH_INITVAL;
+
+  /* All but the last block: affect some 32 bits of (a,b,c) */
+  for (;;) {
+    sum_up_to_nul(a, k, klen, have_nul);
+    if (have_nul)
+      break;
+    k += UINTSZ;
+    assert (klen >= UINTSZ);
+    klen -= UINTSZ;
+
+    sum_up_to_nul(b, k, klen, have_nul);
+    if (have_nul)
+      break;
+    k += UINTSZ;
+    assert (klen >= UINTSZ);
+    klen -= UINTSZ;
+
+    sum_up_to_nul(c, k, klen, have_nul);
+    if (have_nul)
+      break;
+    k += UINTSZ;
+    assert (klen >= UINTSZ);
+    klen -= UINTSZ;
+    jhash_mix(a, b, c);
+  }
+
+  jhash_final(a, b, c);
+  return c + (unsigned) (k - start);
+}

src/hash.h

@@ -0,0 +1,234 @@
+/* hash.h -- decls for hash table
+Copyright (C) 1995, 1999, 2002, 2010 Free Software Foundation, Inc.
+Written by Greg McGary <gkm@gnu.org> <greg@mcgary.org>
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _hash_h_
+#define _hash_h_
+
+#include <stdio.h>
+#include <ctype.h>
+
+#if defined __cplusplus || (defined __STDC__ && __STDC__) || MK_OS_W32
+# if !defined __GLIBC__ || !defined __P
+#  undef	__P
+#  define __P(protos)	protos
+# endif
+#else /* Not C++ or ANSI C.  */
+# undef	__P
+# define __P(protos)	()
+/* We can get away without defining 'const' here only because in this file
+   it is used only inside the prototype for 'fnmatch', which is elided in
+   non-ANSI C where 'const' is problematical.  */
+#endif /* C++ or ANSI C.  */
+
+typedef unsigned long (*hash_func_t) __P((void const *key));
+typedef int (*hash_cmp_func_t) __P((void const *x, void const *y));
+typedef void (*hash_map_func_t) __P((void const *item));
+typedef void (*hash_map_arg_func_t) __P((void const *item, void *arg));
+
+struct hash_table
+{
+  void **ht_vec;
+  hash_func_t ht_hash_1;	/* primary hash function */
+  hash_func_t ht_hash_2;	/* secondary hash function */
+  hash_cmp_func_t ht_compare;	/* comparison function */
+  unsigned long ht_size;	/* total number of slots (power of 2) */
+  unsigned long ht_capacity;	/* usable slots, limited by loading-factor */
+  unsigned long ht_fill;	/* items in table */
+  unsigned long ht_empty_slots;	/* empty slots not including deleted slots */
+  unsigned long ht_collisions;	/* # of failed calls to comparison function */
+  unsigned long ht_lookups;	/* # of queries */
+  unsigned int ht_rehashes;	/* # of times we've expanded table */
+};
+
+typedef int (*qsort_cmp_t) __P((void const *, void const *));
+
+void hash_init __P((struct hash_table *ht, unsigned long size,
+                    hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp));
+void hash_load __P((struct hash_table *ht, const void *item_table,
+                    unsigned long cardinality, unsigned long size));
+void **hash_find_slot __P((struct hash_table *ht, void const *key));
+void *hash_find_item __P((struct hash_table *ht, void const *key));
+void *hash_insert __P((struct hash_table *ht, const void *item));
+void *hash_insert_at __P((struct hash_table *ht, const void *item, void const *slot));
+void *hash_delete __P((struct hash_table *ht, void const *item));
+void *hash_delete_at __P((struct hash_table *ht, void const *slot));
+void hash_delete_items __P((struct hash_table *ht));
+void hash_free_items __P((struct hash_table *ht));
+void hash_free __P((struct hash_table *ht, int free_items));
+void hash_map __P((struct hash_table *ht, hash_map_func_t map));
+void hash_map_arg __P((struct hash_table *ht, hash_map_arg_func_t map, void *arg));
+void hash_print_stats __P((struct hash_table *ht, FILE *out_FILE));
+void **hash_dump __P((struct hash_table *ht, void **vector_0, qsort_cmp_t compare));
+
+extern unsigned jhash(unsigned char const *key, int n);
+extern unsigned jhash_string(unsigned char const *key);
+
+extern const void *hash_deleted_item;
+#define HASH_VACANT(item) ((item) == 0 || (void *) (item) == hash_deleted_item)
+
+
+/* hash and comparison macros for case-sensitive string keys. */
+
+/* Due to the strcache, it's not uncommon for the string pointers to
+   be identical.  Take advantage of that to short-circuit string compares.  */
+
+#define STRING_HASH_1(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY); \
+  (RESULT) += jhash_string(_key_); \
+} while (0)
+#define return_STRING_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  STRING_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+/* No need for a second hash because jhash already provides
+   pretty good results.  However, do evaluate the arguments
+   to avoid warnings.  */
+#define STRING_HASH_2(KEY, RESULT) do { \
+  (void)(KEY); \
+} while (0)
+#define return_STRING_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  STRING_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define STRING_COMPARE(X, Y, RESULT) do { \
+    RESULT = (X) == (Y) ? 0 : strcmp ((X), (Y)); \
+} while (0)
+#define return_STRING_COMPARE(X, Y) do { \
+  return (X) == (Y) ? 0 : strcmp ((X), (Y)); \
+} while (0)
+
+
+#define STRING_N_HASH_1(KEY, N, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY); \
+  (RESULT) += jhash(_key_, N); \
+} while (0)
+
+#define return_STRING_N_HASH_1(KEY, N) do { \
+  unsigned long _result_ = 0; \
+  STRING_N_HASH_1 ((KEY), (N), _result_); \
+  return _result_; \
+} while (0)
+
+/* No need for a second hash because jhash already provides
+   pretty good results.  However, do evaluate the arguments
+   to avoid warnings.  */
+#define STRING_N_HASH_2(KEY, N, RESULT) do { \
+  (void)(KEY); \
+  (void)(N); \
+} while (0)
+
+#define return_STRING_N_HASH_2(KEY, N) do { \
+  unsigned long _result_ = 0; \
+  STRING_N_HASH_2 ((KEY), (N), _result_); \
+  return _result_; \
+} while (0)
+
+#define STRING_N_COMPARE(X, Y, N, RESULT) do { \
+  RESULT = (X) == (Y) ? 0 : memcmp ((X), (Y), (N)); \
+} while (0)
+#define return_STRING_N_COMPARE(X, Y, N) do { \
+  return (X) == (Y) ? 0 : memcmp ((X), (Y), (N)); \
+} while (0)
+
+#ifdef HAVE_CASE_INSENSITIVE_FS
+
+/* hash and comparison macros for case-insensitive string _key_s. */
+
+#define ISTRING_HASH_1(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  while (*++_key_) \
+    (RESULT) += (tolower (*_key_) << (_key_[1] & 0xf)); \
+} while (0)
+#define return_ISTRING_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  ISTRING_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define ISTRING_HASH_2(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  while (*++_key_) \
+    (RESULT) += (tolower (*_key_) << (_key_[1] & 0x7)); \
+} while (0)
+#define return_ISTRING_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  ISTRING_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define ISTRING_COMPARE(X, Y, RESULT) do { \
+  RESULT = (X) == (Y) ? 0 : strcasecmp ((X), (Y)); \
+} while (0)
+#define return_ISTRING_COMPARE(X, Y) do { \
+  return (X) == (Y) ? 0 : strcasecmp ((X), (Y)); \
+} while (0)
+
+#else
+
+#define ISTRING_HASH_1(KEY, RESULT) STRING_HASH_1 ((KEY), (RESULT))
+#define return_ISTRING_HASH_1(KEY) return_STRING_HASH_1 (KEY)
+
+#define ISTRING_HASH_2(KEY, RESULT) STRING_HASH_2 ((KEY), (RESULT))
+#define return_ISTRING_HASH_2(KEY) return_STRING_HASH_2 (KEY)
+
+#define ISTRING_COMPARE(X, Y, RESULT) STRING_COMPARE ((X), (Y), (RESULT))
+#define return_ISTRING_COMPARE(X, Y) return_STRING_COMPARE ((X), (Y))
+
+#endif
+
+/* hash and comparison macros for integer _key_s. */
+
+#define INTEGER_HASH_1(KEY, RESULT) do { \
+  (RESULT) += ((unsigned long)(KEY)); \
+} while (0)
+#define return_INTEGER_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  INTEGER_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define INTEGER_HASH_2(KEY, RESULT) do { \
+  (RESULT) += ~((unsigned long)(KEY)); \
+} while (0)
+#define return_INTEGER_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  INTEGER_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define INTEGER_COMPARE(X, Y, RESULT) do { \
+  (RESULT) = X - Y; \
+} while (0)
+#define return_INTEGER_COMPARE(X, Y) do { \
+  int _result_; \
+  INTEGER_COMPARE (X, Y, _result_); \
+  return _result_; \
+} while (0)
+
+/* hash and comparison macros for address keys. */
+
+#define ADDRESS_HASH_1(KEY, RESULT) INTEGER_HASH_1 (((unsigned long)(KEY)) >> 3, (RESULT))
+#define ADDRESS_HASH_2(KEY, RESULT) INTEGER_HASH_2 (((unsigned long)(KEY)) >> 3, (RESULT))
+#define ADDRESS_COMPARE(X, Y, RESULT) INTEGER_COMPARE ((X), (Y), (RESULT))
+#define return_ADDRESS_HASH_1(KEY) return_INTEGER_HASH_1 (((unsigned long)(KEY)) >> 3)
+#define return_ADDRESS_HASH_2(KEY) return_INTEGER_HASH_2 (((unsigned long)(KEY)) >> 3)
+#define return_ADDRESS_COMPARE(X, Y) return_INTEGER_COMPARE ((X), (Y))
+
+#endif /* not _hash_h_ */

src/job.h

@@ -0,0 +1,88 @@
+/* Definitions for managing subprocesses in GNU Make.
+Copyright (C) 1992-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "output.h"
+
+/* Structure describing a running or dead child process.  */
+
+#if MK_OS_VMS
+#define VMSCHILD                                                        \
+    char *comname;              /* Temporary command file name */       \
+    int efn;                    /* Completion event flag number */      \
+    int cstatus;                /* Completion status */                 \
+    int vms_launch_status;      /* non-zero if lib$spawn, etc failed */
+#else
+#define VMSCHILD
+#endif
+
+#define CHILDBASE                                               \
+    char *cmd_name;       /* Allocated copy of command run.  */ \
+    char **environment;   /* Environment for commands. */       \
+    VMSCHILD                                                    \
+    struct output output  /* Output for this child.  */
+
+
+struct childbase
+  {
+    CHILDBASE;
+  };
+
+struct child
+  {
+    CHILDBASE;
+
+    struct child *next;         /* Link in the chain.  */
+
+    struct file *file;          /* File being remade.  */
+
+    char *sh_batch_file;        /* Script file for shell commands */
+    char **command_lines;       /* Array of variable-expanded cmd lines.  */
+    char *command_ptr;          /* Ptr into command_lines[command_line].  */
+
+    unsigned int  command_line; /* Index into command_lines.  */
+
+    pid_t pid;                  /* Child process's ID number.  */
+
+    unsigned int  remote:1;     /* Nonzero if executing remotely.  */
+    unsigned int  noerror:1;    /* Nonzero if commands contained a '-'.  */
+    unsigned int  good_stdin:1; /* Nonzero if this child has a good stdin.  */
+    unsigned int  deleted:1;    /* Nonzero if targets have been deleted.  */
+    unsigned int  recursive:1;  /* Nonzero for recursive command ('+' etc.)  */
+    unsigned int  jobslot:1;    /* Nonzero if it's reserved a job slot.  */
+    unsigned int  dontcare:1;   /* Saved dontcare flag.  */
+  };
+
+extern struct child *children;
+
+/* A signal handler for SIGCHLD, if needed.  */
+void child_handler (int sig);
+int is_bourne_compatible_shell(const char *path);
+void new_job (struct file *file);
+void reap_children (int block, int err);
+void start_waiting_jobs (void);
+void free_childbase (struct childbase* child);
+
+char **construct_command_argv (char *line, char **restp, struct file *file,
+                               int cmd_flags, char** batch_file);
+
+pid_t child_execute_job (struct childbase *child, int good_stdin, char **argv);
+
+pid_t exec_command (char **argv, char **envp);
+
+void unblock_all_sigs (void);
+
+extern unsigned int job_slots_used;
+extern unsigned int jobserver_tokens;

src/load.c

@@ -0,0 +1,314 @@
+/* Loading dynamic objects for GNU Make.
+Copyright (C) 2012-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#if MAKE_LOAD
+
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+#include <errno.h>
+
+#include "debug.h"
+#include "filedef.h"
+#include "variable.h"
+
+/* Tru64 V4.0 does not have this flag */
+#ifndef RTLD_GLOBAL
+# define RTLD_GLOBAL 0
+#endif
+
+#define GMK_SETUP       "_gmk_setup"
+#define GMK_UNLOAD      "_gmk_unload"
+
+typedef int (*setup_func_t)(unsigned int abi, const floc *flocp);
+typedef void (*unload_func_t)(void);
+
+struct load_list
+  {
+    struct load_list *next;
+    const char *name;
+    void *dlp;
+    unload_func_t unload;
+  };
+
+static struct load_list *loaded_syms = NULL;
+
+static setup_func_t
+load_object (const floc *flocp, int noerror, const char *ldname,
+             const char *setupnm)
+{
+  static void *global_dl = NULL;
+  char *buf;
+  const char *fp;
+  char *endp;
+  void *dlp;
+  struct load_list *new;
+  setup_func_t symp;
+
+  if (! global_dl)
+    {
+      global_dl = dlopen (NULL, RTLD_NOW|RTLD_GLOBAL);
+      if (! global_dl)
+        {
+          const char *err = dlerror ();
+          OS (fatal, flocp, _("failed to open global symbol table: %s"), err);
+        }
+    }
+
+  /* Find the prefix of the ldname.  */
+  fp = strrchr (ldname, '/');
+#ifdef HAVE_DOS_PATHS
+  if (fp)
+    {
+      const char *fp2 = strchr (fp, '\\');
+
+      if (fp2 > fp)
+        fp = fp2;
+    }
+  else
+    fp = strrchr (ldname, '\\');
+  /* The (improbable) case of d:foo.  */
+  if (fp && *fp && fp[1] == ':')
+    fp++;
+#endif
+  if (!fp)
+    fp = ldname;
+  else
+    ++fp;
+
+  endp = buf = alloca (strlen (fp) + CSTRLEN (GMK_UNLOAD) + 1);
+  while (isalnum ((unsigned char) *fp) || *fp == '_')
+    *(endp++) = *(fp++);
+
+  /* If we didn't find a symbol name yet, construct it from the prefix.  */
+  if (! setupnm)
+    {
+      memcpy (endp, GMK_SETUP, CSTRLEN (GMK_SETUP) + 1);
+      setupnm = buf;
+    }
+
+  DB (DB_VERBOSE, (_("Loading symbol %s from %s\n"), setupnm, ldname));
+
+  symp = (setup_func_t) dlsym (global_dl, setupnm);
+  if (symp)
+    return symp;
+
+  /* If the path has no "/", try the current directory first.  */
+  dlp = NULL;
+  if (! strchr (ldname, '/')
+#ifdef HAVE_DOS_PATHS
+      && ! strchr (ldname, '\\')
+#endif
+      )
+    dlp = dlopen (concat (2, "./", ldname), RTLD_LAZY|RTLD_GLOBAL);
+
+  /* If we haven't opened it yet, try the default search path.  */
+  if (! dlp)
+    dlp = dlopen (ldname, RTLD_LAZY|RTLD_GLOBAL);
+
+  /* Still no?  Then fail.  */
+  if (! dlp)
+    {
+      const char *err = dlerror ();
+      if (noerror)
+        DB (DB_BASIC, ("%s\n", err));
+      else
+        OS (error, flocp, "%s", err);
+      return NULL;
+    }
+
+  DB (DB_VERBOSE, (_("Loaded shared object %s\n"), ldname));
+
+  /* Assert that the GPL license symbol is defined.  */
+  symp = (setup_func_t) dlsym (dlp, "plugin_is_GPL_compatible");
+  if (! symp)
+    OS (fatal, flocp,
+        _("loaded object %s is not declared to be GPL compatible"), ldname);
+
+  symp = (setup_func_t) dlsym (dlp, setupnm);
+  if (! symp)
+    {
+      const char *err = dlerror ();
+      OSSS (fatal, flocp, _("failed to load symbol %s from %s: %s"),
+            setupnm, ldname, err);
+    }
+
+  new = xcalloc (sizeof (struct load_list));
+  new->next = loaded_syms;
+  loaded_syms = new;
+  new->name = ldname;
+  new->dlp = dlp;
+
+  /* Compute the name of the unload function and look it up.  */
+  memcpy (endp, GMK_UNLOAD, CSTRLEN (GMK_UNLOAD) + 1);
+
+  new->unload = (unload_func_t) dlsym (dlp, buf);
+  if (new->unload)
+    DB (DB_VERBOSE, (_("Detected symbol %s in %s\n"), buf, ldname));
+
+  return symp;
+}
+
+int
+load_file (const floc *flocp, struct file *file, int noerror)
+{
+  const char *ldname = file->name;
+  char *buf;
+  char *setupnm = NULL;
+  const char *fp;
+  int r;
+  setup_func_t symp;
+
+  /* Break the input into an object file name and a symbol name.  If no symbol
+     name was provided, compute one from the object file name.  */
+  fp = strchr (ldname, '(');
+  if (fp)
+    {
+      const char *ep;
+
+      /* There's an open paren, so see if there's a close paren: if so use
+         that as the symbol name.  We can't have whitespace: it would have
+         been chopped up before this function is called.  */
+      ep = strchr (fp+1, ')');
+      if (ep && ep[1] == '\0')
+        {
+          size_t l = fp - ldname;
+
+          ++fp;
+          if (fp == ep)
+            OS (fatal, flocp, _("empty symbol name for load: %s"), ldname);
+
+          /* Make a copy of the ldname part.  */
+          buf = alloca (strlen (ldname) + 1);
+          memcpy (buf, ldname, l);
+          buf[l] = '\0';
+          ldname = buf;
+
+          /* Make a copy of the symbol name part.  */
+          setupnm = buf + l + 1;
+          memcpy (setupnm, fp, ep - fp);
+          setupnm[ep - fp] = '\0';
+        }
+    }
+
+  /* Make sure this name is in the string cache.  */
+  ldname = file->name = strcache_add (ldname);
+
+  /* If this object has been loaded, we're done: return -1 to ensure make does
+     not rebuild again.  If a rebuild is allowed it was set up when this
+     object was initially loaded.  */
+  file = lookup_file (ldname);
+  if (file && file->loaded)
+    return -1;
+
+  /* Load it!  */
+  symp = load_object (flocp, noerror, ldname, setupnm);
+  if (! symp)
+    return 0;
+
+  /* Invoke the setup function.  */
+  {
+    unsigned int abi = GMK_ABI_VERSION;
+    r = (*symp) (abi, flocp);
+  }
+
+  /* If the load didn't fail, add the file to the .LOADED variable.  */
+  if (r)
+    do_variable_definition(flocp, ".LOADED", ldname, o_file, f_append_value, 0,
+                           s_global);
+
+  return r;
+}
+
+int
+unload_file (const char *name)
+{
+  struct load_list **dp = &loaded_syms;
+
+  /* Unload and remove the entry for this file.  */
+  while (*dp != NULL)
+    {
+      struct load_list *d = *dp;
+
+      if (streq (d->name, name))
+        {
+          int rc;
+
+          DB (DB_VERBOSE, (_("Unloading shared object %s\n"), name));
+
+          if (d->unload)
+            (*d->unload) ();
+
+          rc = dlclose (d->dlp);
+          if (rc)
+            perror_with_name ("dlclose: ", d->name);
+
+          *dp = d->next;
+          free (d);
+          return rc;
+        }
+
+      dp = &d->next;
+    }
+
+  return 0;
+}
+
+void
+unload_all ()
+{
+  while (loaded_syms)
+    {
+      struct load_list *d = loaded_syms;
+      loaded_syms = loaded_syms->next;
+
+      if (d->unload)
+        (*d->unload) ();
+
+      if (dlclose (d->dlp))
+        perror_with_name ("dlclose: ", d->name);
+
+      free (d);
+    }
+}
+
+#else
+
+int
+load_file (const floc *flocp, struct file *file UNUSED, int noerror)
+{
+  if (! noerror)
+    O (fatal, flocp,
+       _("'load' is not supported on this platform"));
+
+  return 0;
+}
+
+int
+unload_file (const char *name UNUSED)
+{
+  O (fatal, NILF, "INTERNAL: cannot unload when load is not supported");
+}
+
+void
+unload_all ()
+{
+}
+
+#endif  /* MAKE_LOAD */

src/loadapi.c

@@ -0,0 +1,82 @@
+/* API for GNU Make dynamic objects.
+Copyright (C) 2013-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include "filedef.h"
+#include "variable.h"
+#include "dep.h"
+
+/* Allocate a buffer in our context, so we can free it.  */
+char *
+gmk_alloc (unsigned int len)
+{
+  return xmalloc (len);
+}
+
+/* Free a buffer returned by gmk_expand().  */
+void
+gmk_free (char *s)
+{
+  free (s);
+}
+
+/* Evaluate a buffer as make syntax.
+   Ideally eval_buffer() will take const char *, but not yet.  */
+void
+gmk_eval (const char *buffer, const gmk_floc *gfloc)
+{
+  /* Preserve existing variable buffer context.  */
+  char *pbuf;
+  size_t plen;
+  char *s;
+  floc fl;
+  floc *flp;
+
+  if (gfloc)
+    {
+      fl.filenm = gfloc->filenm;
+      fl.lineno = gfloc->lineno;
+      fl.offset = 0;
+      flp = &fl;
+    }
+  else
+    flp = NULL;
+
+  install_variable_buffer (&pbuf, &plen);
+
+  s = xstrdup (buffer);
+  eval_buffer (s, flp);
+  free (s);
+
+  restore_variable_buffer (pbuf, plen);
+}
+
+/* Expand a string and return an allocated buffer.
+   Caller must call gmk_free() with this buffer.  */
+char *
+gmk_expand (const char *ref)
+{
+  return allocated_expand_string (ref);
+}
+
+/* Register a function to be called from makefiles.  */
+void
+gmk_add_function (const char *name, gmk_func_ptr func,
+                  unsigned int min, unsigned int max, unsigned int flags)
+{
+  define_new_function (reading_file, name, min, max, flags, func);
+}

src/makeint.h

@@ -0,0 +1,893 @@
+/* Miscellaneous global declarations and portability cruft for GNU Make.
+Copyright (C) 1988-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* We use <config.h> instead of "config.h" so that a compilation
+   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
+   (which it would do because makeint.h was found in $srcdir).  */
+#include <config.h>
+
+/* Some versions of GCC (e.g., 10.x) set the warn_unused_result attribute on
+   __builtin_alloca.  This causes alloca(0) to fail and is not easily worked
+   around so avoid it via the preprocessor.
+   See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98055  */
+
+#if defined (__has_builtin)
+# if __has_builtin (__builtin_alloca)
+#   define free_alloca()
+# else
+#  define free_alloca() alloca (0)
+# endif
+#else
+# define free_alloca() alloca (0)
+#endif
+
+/* Disable assert() unless we're a maintainer.
+   Some asserts are compute-intensive.  */
+#ifndef MAKE_MAINTAINER_MODE
+# define NDEBUG 1
+#endif
+
+/* Include the externally-visible content.
+   Be sure to use the local one, and not one installed on the system.
+   Define GMK_BUILDING_MAKE for proper selection of dllexport/dllimport
+   declarations for MS-Windows.  */
+#if MK_OS_W32
+# define GMK_BUILDING_MAKE
+#endif
+#include "gnumake.h"
+
+#ifdef CRAY
+/* This must happen before #include <signal.h> so
+   that the declaration therein is changed.  */
+# define signal bsdsignal
+#endif
+
+/* If we're compiling for the dmalloc debugger, turn off string inlining.  */
+#if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
+# define __NO_STRING_INLINES
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <signal.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#if HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#include <time.h>
+
+#include <errno.h>
+
+#ifndef errno
+extern int errno;
+#endif
+
+/* Define macros specifying which OS we are building for.  */
+#if __gnu_hurd__
+# define MK_OS_HURD 1
+#endif
+#if __CYGWIN__
+# define MK_OS_CYGWIN 1
+#endif
+#if defined(__MVS__)
+# define MK_OS_ZOS 1
+#endif
+
+#if defined(__EMX__)
+# define MK_OS_OS2 1
+#endif
+
+#ifdef __VMS
+# define MK_OS_VMS 1
+/* In strict ANSI mode, VMS compilers should not be defining the
+   VMS macro.  Define it here instead of a bulk edit for the correct code.
+ */
+# ifndef VMS
+#  define VMS
+# endif
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
+   POSIX.1 behavior with 'cc -YPOSIX', which predefines POSIX itself!  */
+# if defined (_POSIX_VERSION) && !defined (ultrix) && !MK_OS_VMS
+#  define POSIX 1
+# endif
+#endif
+
+/* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
+#if (defined (butterfly) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
+# undef POSIX
+#endif
+
+#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
+# define POSIX 1
+#endif
+
+#ifndef sigmask
+# define sigmask(sig)   (1 << ((sig) - 1))
+#endif
+
+#ifndef HAVE_SA_RESTART
+# define SA_RESTART 0
+#endif
+
+#ifdef HAVE_VFORK_H
+# include <vfork.h>
+#endif
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+#ifndef PATH_MAX
+# ifdef MAXPATHLEN
+#  define PATH_MAX      MAXPATHLEN
+# else
+/* Some systems (HURD) have fully dynamic pathnames with no maximum.
+   Ideally we'd support this but it will take some work.  */
+#  define PATH_MAX      4096
+# endif
+#endif
+
+#define GET_PATH_MAX   PATH_MAX
+#define PATH_VAR(var)  char var[PATH_MAX+1]
+
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
+
+#ifndef USHRT_MAX
+# define USHRT_MAX 65535
+#endif
+
+#ifndef SIZE_MAX
+# define SIZE_MAX ((size_t)~(size_t)0)
+#endif
+
+/* Nonzero if the integer type T is signed.
+   Use <= to avoid GCC warnings about always-false expressions.  */
+#define INTEGER_TYPE_SIGNED(t) ((t) -1 <= 0)
+
+/* The minimum and maximum values for the integer type T.
+   Use ~ (t) 0, not -1, for portability to 1's complement hosts.  */
+#define INTEGER_TYPE_MINIMUM(t) \
+  (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
+#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
+
+#ifndef CHAR_MAX
+# define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
+#endif
+
+#ifdef STAT_MACROS_BROKEN
+# ifdef S_ISREG
+#  undef S_ISREG
+# endif
+# ifdef S_ISDIR
+#  undef S_ISDIR
+# endif
+#endif  /* STAT_MACROS_BROKEN.  */
+
+#ifndef S_ISREG
+# define S_ISREG(mode)  (((mode) & S_IFMT) == S_IFREG)
+#endif
+#ifndef S_ISDIR
+# define S_ISDIR(mode)  (((mode) & S_IFMT) == S_IFDIR)
+#endif
+
+#if MK_OS_VMS
+# include <fcntl.h>
+# include <types.h>
+# include <unixlib.h>
+# include <unixio.h>
+# include <perror.h>
+/* Needed to use alloca on VMS.  */
+# include <builtins.h>
+
+extern int vms_use_mcr_command;
+extern int vms_always_use_cmd_file;
+extern int vms_gnv_shell;
+extern int vms_comma_separator;
+extern int vms_legacy_behavior;
+extern int vms_unix_simulation;
+#endif
+
+#if !defined(__attribute__) && (__GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
+/* Don't use __attribute__ if it's not supported.  */
+# define ATTRIBUTE(x)
+#else
+# define ATTRIBUTE(x) __attribute__ (x)
+#endif
+
+/* The __-protected variants of 'format' and 'printf' attributes
+   are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+# define __format__ format
+# define __printf__ printf
+#endif
+
+#define UNUSED   ATTRIBUTE ((unused))
+#define NORETURN ATTRIBUTE ((noreturn))
+
+#if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
+# include <stdlib.h>
+# include <string.h>
+# define ANSI_STRING 1
+#else   /* No standard headers.  */
+# ifdef HAVE_STRING_H
+#  include <string.h>
+#  define ANSI_STRING 1
+# endif
+# ifdef HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# else
+void *malloc (int);
+void *realloc (void *, int);
+void free (void *);
+
+void abort (void) NORETURN;
+void exit (int) NORETURN;
+# endif /* HAVE_STDLIB_H.  */
+
+#endif /* Standard headers.  */
+
+/* These should be in stdlib.h.  Make sure we have them.  */
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+#ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+#ifndef ANSI_STRING
+
+/* SCO Xenix has a buggy macro definition in <string.h>.  */
+#undef strerror
+#if !defined(__DECC)
+char *strerror (int errnum);
+#endif
+
+#endif  /* !ANSI_STRING.  */
+#undef ANSI_STRING
+
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+#if HAVE_STRINGS_H
+# include <strings.h>  /* Needed for strcasecmp / strncasecmp.  */
+#endif
+
+#if defined _MSC_VER || defined __MINGW32__
+# define MK_PRI64_PREFIX "I64"
+#else
+# define MK_PRI64_PREFIX "ll"
+#endif
+#ifndef PRIdMAX
+# define PRIdMAX MK_PRI64_PREFIX "d"
+#endif
+#ifndef PRIuMAX
+# define PRIuMAX MK_PRI64_PREFIX "u"
+#endif
+#ifndef SCNdMAX
+# define SCNdMAX PRIdMAX
+#endif
+#define FILE_TIMESTAMP uintmax_t
+
+#if !defined(HAVE_STRSIGNAL)
+char *strsignal (int signum);
+#endif
+
+#if !defined(HAVE_UMASK)
+typedef int mode_t;
+extern mode_t umask (mode_t);
+#endif
+
+/* ISDIGIT offers the following features:
+   - Its arg may be any int or unsigned int; it need not be an unsigned char.
+   - It's guaranteed to evaluate its argument exactly once.
+      NOTE!  Make relies on this behavior, don't change it!
+   - It's typically faster.
+   POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
+   only '0' through '9' are digits.  Prefer ISDIGIT to isdigit() unless
+   it's important to use the locale's definition of 'digit' even when the
+   host does not conform to POSIX.  */
+#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
+
+/* Test if two strings are equal. Is this worthwhile?  Should be profiled.  */
+#define streq(a, b) \
+   ((a) == (b) || \
+    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
+
+/* Test if two strings are equal, but match case-insensitively on systems
+   which have case-insensitive filesystems.  Should only be used for
+   filenames!  */
+#ifdef HAVE_CASE_INSENSITIVE_FS
+# define patheq(a, b) \
+    ((a) == (b) \
+     || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \
+         && (*(a) == '\0' || !strcasecmp ((a) + 1, (b) + 1))))
+#else
+# define patheq(a, b) streq(a, b)
+#endif
+
+#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
+
+#if defined(ENUM_BITFIELDS) || (defined(__GNUC__) && !defined(__STRICT_ANSI__))
+# define ENUM_BITFIELD(bits)    :bits
+#else
+# define ENUM_BITFIELD(bits)
+#endif
+
+/* Handle gettext and locales.  */
+
+#if HAVE_LOCALE_H
+# include <locale.h>
+#else
+# define setlocale(category, locale)
+#endif
+
+#include <gettext.h>
+
+#define _(msgid)            gettext (msgid)
+#define N_(msgid)           gettext_noop (msgid)
+#define S_(msg1,msg2,num)   ngettext (msg1,msg2,num)
+
+/* This is needed for getcwd() and chdir(), on some W32 systems.  */
+#if defined(HAVE_DIRECT_H)
+# include <direct.h>
+#endif
+
+#if MK_OS_W32
+# include <fcntl.h>
+# include <malloc.h>
+# define pipe(_p)        _pipe((_p), 512, O_BINARY)
+# define kill(_pid,_sig) w32_kill((_pid),(_sig))
+/* MSVC and Watcom C don't have ftruncate.  */
+# if defined(_MSC_VER) || defined(__WATCOMC__)
+#  define ftruncate(_fd,_len) _chsize(_fd,_len)
+# endif
+/* MinGW64 doesn't have _S_ISDIR.  */
+# ifndef _S_ISDIR
+#  define _S_ISDIR(m)  S_ISDIR(m)
+# endif
+
+void sync_Path_environment (void);
+int w32_kill (pid_t pid, int sig);
+int find_and_set_default_shell (const char *token);
+
+/* indicates whether or not we have Bourne shell */
+extern int no_default_sh_exe;
+
+/* is default_shell unixy? */
+extern int unixy_shell;
+
+/* We don't have a preferred fixed value for LOCALEDIR.  */
+# ifndef LOCALEDIR
+#  define LOCALEDIR NULL
+# endif
+
+/* Include only the minimal stuff from windows.h.   */
+# ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+# endif
+#endif  /* MK_OS_W32 */
+
+/* ALL_SET() evaluates the second argument twice.  */
+#define ANY_SET(_v,_m)  (((_v)&(_m)) != 0)
+#define NONE_SET(_v,_m) (! ANY_SET ((_v),(_m)))
+#define ALL_SET(_v,_m)  (((_v)&(_m)) == (_m))
+
+/* Bitmasks for the STOPCHAR array.  */
+#define MAP_NUL         0x0001
+#define MAP_BLANK       0x0002  /* space, TAB */
+#define MAP_NEWLINE     0x0004
+#define MAP_COMMENT     0x0008
+#define MAP_SEMI        0x0010
+#define MAP_EQUALS      0x0020
+#define MAP_COLON       0x0040
+#define MAP_VARSEP      0x0080
+#define MAP_PIPE        0x0100
+#define MAP_DOT         0x0200
+#define MAP_COMMA       0x0400
+
+/* These are the valid characters for a user-defined function.  */
+#define MAP_USERFUNC    0x2000
+/* This means not only a '$', but skip the variable reference.  */
+#define MAP_VARIABLE    0x4000
+/* The set of characters which are directory separators is OS-specific.  */
+#define MAP_DIRSEP      0x8000
+
+#if MK_OS_VMS
+# define MAP_VMSCOMMA   MAP_COMMA
+#else
+# define MAP_VMSCOMMA   0x0000
+#endif
+
+#define MAP_SPACE       (MAP_BLANK|MAP_NEWLINE)
+
+/* Handle other OSs.
+   To overcome an issue parsing paths in a DOS/Windows environment when
+   built in a unix based environment, override the PATH_SEPARATOR_CHAR
+   definition unless being built for Cygwin. */
+#if defined(HAVE_DOS_PATHS) && !defined(__CYGWIN__)
+# undef PATH_SEPARATOR_CHAR
+# define PATH_SEPARATOR_CHAR ';'
+# define MAP_PATHSEP    MAP_SEMI
+#elif !defined(PATH_SEPARATOR_CHAR)
+# if MK_OS_VMS
+#  define PATH_SEPARATOR_CHAR (vms_comma_separator ? ',' : ':')
+#  define MAP_PATHSEP    (vms_comma_separator ? MAP_COMMA : MAP_SEMI)
+# else
+#  define PATH_SEPARATOR_CHAR ':'
+#  define MAP_PATHSEP    MAP_COLON
+# endif
+#elif PATH_SEPARATOR_CHAR == ':'
+# define MAP_PATHSEP     MAP_COLON
+#elif PATH_SEPARATOR_CHAR == ';'
+# define MAP_PATHSEP     MAP_SEMI
+#elif PATH_SEPARATOR_CHAR == ','
+# define MAP_PATHSEP     MAP_COMMA
+
+#else
+# error "Unknown PATH_SEPARATOR_CHAR"
+#endif
+
+#define STOP_SET(_v,_m) ANY_SET(stopchar_map[(unsigned char)(_v)],(_m))
+
+/* True if C is whitespace but not newline.  */
+#define ISBLANK(c)      STOP_SET((c),MAP_BLANK)
+/* True if C is whitespace including newlines.  */
+#define ISSPACE(c)      STOP_SET((c),MAP_SPACE)
+/* True if C is nul or whitespace (including newline).  */
+#define END_OF_TOKEN(c) STOP_SET((c),MAP_SPACE|MAP_NUL)
+/* Move S past all whitespace (including newlines).  */
+#define NEXT_TOKEN(s)   while (ISSPACE (*(s))) ++(s)
+
+/* True if C is a directory separator on the current system.  */
+#define ISDIRSEP(c)     STOP_SET((c),MAP_DIRSEP)
+
+/* True if S starts with a drive specifier.  */
+#if defined(HAVE_DOS_PATHS)
+# define HAS_DRIVESPEC(_s) ((((_s)[0] >= 'a' && (_s)[0] <= 'z')          \
+                             || ((_s)[0] >= 'A' && (_s)[0] <= 'Z'))      \
+                            && (_s)[1] == ':')
+#else
+# define HAS_DRIVESPEC(_s) 0
+#endif
+
+/* We can't run setrlimit when using posix_spawn.  */
+#if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT) && !defined(USE_POSIX_SPAWN)
+# define SET_STACK_SIZE
+#endif
+#ifdef SET_STACK_SIZE
+# include <sys/resource.h>
+extern struct rlimit stack_limit;
+#endif
+
+#include <glob.h>
+
+#define NILF ((floc *)0)
+
+/* Number of elements in an array.  */
+#define ARRAYLEN(_a)          (sizeof (_a) / sizeof ((_a)[0]))
+
+/* Number of characters in a string constant.  Does NOT include the \0 byte.  */
+#define CSTRLEN(_s)           (sizeof (_s)-1)
+
+/* Only usable when NOT calling a macro: only use it for local functions.  */
+#define STRING_SIZE_TUPLE(_s) (_s), CSTRLEN(_s)
+
+/* The number of bytes needed to represent the largest signed and unsigned
+   integers as a string.
+   Does NOT include space for \0 so be sure to add it if needed.
+   Math suggested by Edward Welbourne <edward.welbourne@qt.io>  */
+#define INTSTR_LENGTH   (53 * sizeof(uintmax_t) / 22 + 3)
+
+#define DEFAULT_TTYNAME "true"
+#ifdef HAVE_TTYNAME
+# define TTYNAME(_f) ttyname (_f)
+#else
+# define TTYNAME(_f) DEFAULT_TTYNAME
+#endif
+
+#if MK_OS_VMS
+# define DEFAULT_TMPDIR     "/sys$scratch/"
+#elif defined(P_tmpdir)
+# define DEFAULT_TMPDIR     P_tmpdir
+#else
+# define DEFAULT_TMPDIR     "/tmp"
+#endif
+
+
+
+
+struct file;
+
+/* Specify the location of elements read from makefiles.  */
+typedef struct
+  {
+    const char *filenm;
+    unsigned long lineno;
+    unsigned long offset;
+  } floc;
+
+const char *concat (unsigned int, ...);
+void message (int prefix, size_t length, const char *fmt, ...)
+              ATTRIBUTE ((__format__ (__printf__, 3, 4)));
+void error (const floc *flocp, size_t length, const char *fmt, ...)
+            ATTRIBUTE ((__format__ (__printf__, 3, 4)));
+void fatal (const floc *flocp, size_t length, const char *fmt, ...)
+            ATTRIBUTE ((noreturn, __format__ (__printf__, 3, 4)));
+char *format (const char *prefix, size_t length, const char *fmt, ...)
+              ATTRIBUTE ((__format__ (__printf__, 3, 4)));
+void out_of_memory (void) NORETURN;
+
+/* When adding macros to this list be sure to update the value of
+   XGETTEXT_OPTIONS in the po/Makevars file.  */
+#define O(_t,_a,_f)           _t((_a), 0, (_f))
+#define OS(_t,_a,_f,_s)       _t((_a), strlen (_s), (_f), (_s))
+#define OSS(_t,_a,_f,_s1,_s2) _t((_a), strlen (_s1) + strlen (_s2), \
+                                 (_f), (_s1), (_s2))
+#define OSSS(_t,_a,_f,_s1,_s2,_s3) _t((_a), strlen (_s1) + strlen (_s2) + strlen (_s3), \
+                                      (_f), (_s1), (_s2), (_s3))
+#define ON(_t,_a,_f,_n)       _t((_a), INTSTR_LENGTH, (_f), (_n))
+#define ONN(_t,_a,_f,_n1,_n2) _t((_a), INTSTR_LENGTH*2, (_f), (_n1), (_n2))
+
+#define OSN(_t,_a,_f,_s,_n)   _t((_a), strlen (_s) + INTSTR_LENGTH, \
+                                 (_f), (_s), (_n))
+#define ONS(_t,_a,_f,_n,_s)   _t((_a), INTSTR_LENGTH + strlen (_s), \
+                                 (_f), (_n), (_s))
+
+enum variable_origin;
+struct variable;
+
+void reset_makeflags (enum variable_origin origin);
+struct variable *define_makeflags (int makefile);
+int should_print_dir (void);
+void temp_stdin_unlink (void);
+void die (int) NORETURN;
+void pfatal_with_name (const char *) NORETURN;
+void perror_with_name (const char *, const char *);
+#define xstrlen(_s) ((_s)==NULL ? 0 : strlen (_s))
+unsigned int make_toui (const char*, const char**);
+char *make_lltoa (long long, char *);
+char *make_ulltoa (unsigned long long, char *);
+void make_seed (unsigned int);
+unsigned int make_rand (void);
+pid_t make_pid (void);
+void *xmalloc (size_t);
+void *xcalloc (size_t);
+void *xrealloc (void *, size_t);
+char *xstrdup (const char *);
+char *xstrndup (const char *, size_t);
+char *find_next_token (const char **, size_t *);
+char *next_token (const char *);
+char *end_of_token (const char *);
+char *skip_reference (const char *);
+void collapse_continuations (char *);
+char *lindex (const char *, const char *, int);
+int alpha_compare (const void *, const void *);
+void print_spaces (unsigned int);
+char *find_percent (char *);
+const char *find_percent_cached (const char **);
+const char *get_tmpdir (void);
+int get_tmpfd (char **);
+FILE *get_tmpfile (char **);
+ssize_t writebuf (int, const void *, size_t);
+ssize_t readbuf (int, void *, size_t);
+
+#ifndef HAVE_MEMRCHR
+void *memrchr(const void *, int, size_t);
+#endif
+
+#ifndef NO_ARCHIVES
+int ar_name (const char *);
+void ar_parse_name (const char *, char **, char **);
+int ar_touch (const char *);
+time_t ar_member_date (const char *);
+
+typedef intmax_t (*ar_member_func_t) (int desc, const char *mem, int truncated,
+                                      long int hdrpos, long int datapos,
+                                      long int size, intmax_t date, int uid,
+                                      int gid, unsigned int mode,
+                                      const void *arg);
+
+intmax_t ar_scan (const char *archive, ar_member_func_t function,
+                  const void *arg);
+int ar_name_equal (const char *name, const char *mem, int truncated);
+#if !MK_OS_VMS
+int ar_member_touch (const char *arname, const char *memname);
+#endif
+#endif
+
+int dir_file_exists_p (const char *, const char *);
+int file_exists_p (const char *);
+int file_impossible_p (const char *);
+void file_impossible (const char *);
+const char *dir_name (const char *);
+void print_dir_data_base (void);
+void dir_setup_glob (glob_t *);
+void hash_init_directories (void);
+
+void define_default_variables (void);
+void undefine_default_variables (void);
+void set_default_suffixes (void);
+void install_default_suffix_rules (void);
+void install_default_implicit_rules (void);
+
+void build_vpath_lists (void);
+void construct_vpath_list (char *pattern, char *dirpath);
+const char *vpath_search (const char *file, FILE_TIMESTAMP *mtime_ptr,
+                          unsigned int* vpath_index, unsigned int* path_index);
+int gpath_search (const char *file, size_t len);
+
+void construct_include_path (const char **arg_dirs);
+
+char *strip_whitespace (const char **begpp, const char **endpp);
+
+void show_goal_error (void);
+
+/* String caching  */
+void strcache_init (void);
+void strcache_print_stats (const char *prefix);
+int strcache_iscached (const char *str);
+const char *strcache_add (const char *str);
+const char *strcache_add_len (const char *str, size_t len);
+
+/* Guile support  */
+int guile_gmake_setup (const floc *flocp);
+
+/* Loadable object support.  Sets to the strcached name of the loaded file.  */
+int load_file (const floc *flocp, struct file *file, int noerror);
+int unload_file (const char *name);
+void unload_all (void);
+
+/* Maintainer mode support */
+#ifdef MAKE_MAINTAINER_MODE
+# define SPIN(_s) spin (_s)
+void spin (const char* suffix);
+# define DBG(_f) dbg _f
+void dbg (const char *fmt, ...);
+#else
+# define SPIN(_s)
+/* Never put this code into Git or a release.  */
+# define DBG(_f) compile-error
+#endif
+
+/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
+   because such systems often declare them in header files anyway.  */
+
+#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !MK_OS_W32
+
+# if !MK_OS_VMS
+long int lseek ();
+# endif
+
+# ifdef HAVE_GETCWD
+#  if !MK_OS_VMS && !defined(__DECC)
+char *getcwd (void);
+#  endif
+# else
+char *getwd (void);
+#  define getcwd(buf, len)       getwd (buf)
+# endif
+
+#endif  /* Not GNU C library or POSIX.  */
+
+#if !HAVE_STRCASECMP
+# if HAVE_STRICMP
+#  define strcasecmp stricmp
+# elif HAVE_STRCMPI
+#  define strcasecmp strcmpi
+# endif
+#endif
+
+#if !HAVE_STRNCASECMP
+# if HAVE_STRNICMP
+#  define strncasecmp strnicmp
+# elif HAVE_STRNCMPI
+#  define strncasecmp strncmpi
+# endif
+#endif
+
+#define OUTPUT_SYNC_NONE    0
+#define OUTPUT_SYNC_LINE    1
+#define OUTPUT_SYNC_TARGET  2
+#define OUTPUT_SYNC_RECURSE 3
+
+/* Non-GNU systems may not declare this in unistd.h.  */
+extern char **environ;
+
+extern const floc *reading_file;
+extern const floc **expanding_var;
+
+extern unsigned short stopchar_map[];
+
+extern int just_print_flag, run_silent, ignore_errors_flag, keep_going_flag;
+extern int print_data_base_flag, question_flag, touch_flag, always_make_flag;
+extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
+extern int print_version_flag, check_symlink_flag, posix_pedantic;
+extern int not_parallel, second_expansion, clock_skew_detected;
+extern int rebuilding_makefiles, one_shell, output_sync, verify_flag;
+extern int export_all_variables;
+extern unsigned long command_count;
+
+extern const char *default_shell;
+
+/* can we run commands via 'sh -c xxx' or must we use batch files? */
+extern int batch_mode_shell;
+
+#define GNUMAKEFLAGS_NAME       "GNUMAKEFLAGS"
+#define MAKEFLAGS_NAME          "MAKEFLAGS"
+
+#define MAKELEVEL_NAME "MAKELEVEL"
+#define MAKELEVEL_LENGTH (CSTRLEN (MAKELEVEL_NAME))
+
+/* Resetting the command script introduction prefix character.  */
+#define RECIPEPREFIX_NAME       ".RECIPEPREFIX"
+#define RECIPEPREFIX_DEFAULT    '\t'
+extern char cmd_prefix;
+
+/* Setting warning actions.  */
+#define WARNINGS_NAME           ".WARNINGS"
+
+extern unsigned int no_intermediates;
+
+#if HAVE_MKFIFO
+/* It seems that mkfifo() is not working correctly, or at least not the way
+   GNU make wants it to work, on: GNU/Hurd, Cygwin, OS2; don't use it there.  */
+# if !defined(JOBSERVER_USE_FIFO) && !MK_OS_HURD && !MK_OS_CYGWIN && !MK_OS_OS2
+#  define JOBSERVER_USE_FIFO 1
+# endif
+#endif
+
+#define JOBSERVER_AUTH_OPT      "jobserver-auth"
+
+extern char *jobserver_auth;
+extern unsigned int job_slots;
+extern double max_load_average;
+
+extern const char *program;
+
+#if MK_OS_VMS
+const char *vms_command (const char *argv0);
+const char *vms_progname (const char *argv0);
+
+void vms_exit (int);
+# define _exit(foo) vms_exit(foo)
+# define exit(foo) vms_exit(foo)
+
+extern char *program_name;
+
+void
+set_program_name (const char *arv0);
+
+int
+need_vms_symbol (void);
+
+int
+create_foreign_command (const char *command, const char *image);
+
+int
+vms_export_dcl_symbol (const char *name, const char *value);
+
+int
+vms_putenv_symbol (const char *string);
+
+void
+vms_restore_symbol (const char *string);
+
+#endif
+
+void remote_setup (void);
+void remote_cleanup (void);
+int start_remote_job_p (int);
+int start_remote_job (char **, char **, int, int *, pid_t *, int *);
+int remote_status (int *, int *, int *, int);
+void block_remote_children (void);
+void unblock_remote_children (void);
+int remote_kill (pid_t id, int sig);
+void print_variable_data_base (void);
+void print_vpath_data_base (void);
+
+extern char *starting_directory;
+extern unsigned int makelevel;
+extern char *version_string, *remote_description, *make_host;
+
+extern unsigned int commands_started;
+
+extern volatile sig_atomic_t handling_fatal_signal;
+
+#ifndef MIN
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+#ifndef MAX
+#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
+#endif
+
+#define MAKE_SUCCESS 0
+#define MAKE_TROUBLE 1
+#define MAKE_FAILURE 2
+
+/* Set up heap debugging library dmalloc.  */
+
+#ifdef HAVE_DMALLOC_H
+#include <dmalloc.h>
+#endif
+
+#ifndef initialize_main
+# if MK_OS_OS2
+#  define initialize_main(pargc, pargv) \
+                          { _wildcard(pargc, pargv); _response(pargc, pargv); }
+# else
+#  define initialize_main(pargc, pargv)
+# endif
+#endif
+
+#if MK_OS_OS2
+# if !defined chdir
+#  define chdir _chdir2
+# endif
+# if !defined getcwd
+#  define getcwd _getcwd2
+# endif
+
+/* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
+   chdir() and getcwd(). This avoids some error messages for the
+   make testsuite but restricts the drive letter support. */
+# ifdef NO_CHDIR2
+#  warning NO_CHDIR2: usage of drive letters restricted
+#  undef chdir
+#  undef getcwd
+# endif
+#endif
+
+#ifndef initialize_main
+# define initialize_main(pargc, pargv)
+#endif
+
+
+/* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
+   properly according to POSIX.  So, we try to wrap common system calls with
+   checks for EINTR.  Note that there are still plenty of system calls that
+   can fail with EINTR but this, reportedly, gets the vast majority of
+   failure cases.  If you still experience failures you'll need to either get
+   a system where SA_RESTART works, or you need to avoid -j.  */
+
+#define EINTRLOOP(_v,_c)   while (((_v)=_c)==-1 && errno==EINTR)
+
+/* While system calls that return integers are pretty consistent about
+   returning -1 on failure and setting errno in that case, functions that
+   return pointers are not always so well behaved.  Sometimes they return
+   NULL for expected behavior: one good example is readdir() which returns
+   NULL at the end of the directory--and _doesn't_ reset errno.  So, we have
+   to do it ourselves here.  */
+
+#define ENULLLOOP(_v,_c)   do { errno = 0; (_v) = _c; } \
+                           while((_v)==0 && errno==EINTR)

src/mkconfig.h.in

@@ -0,0 +1,36 @@
+/* Autoconf values for use on non-POSIX systems.
+Copyright (C) 2022-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Name of package */
+#define PACKAGE "@PACKAGE@"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "@PACKAGE_BUGREPORT@"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "@PACKAGE_NAME@"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "@PACKAGE_NAME@ @PACKAGE_VERSION@"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "@PACKAGE_TARNAME@"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "@PACKAGE_URL@"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "@PACKAGE_VERSION@"

src/mkcustom.h

@@ -0,0 +1,65 @@
+/* Miscellaneous global declarations and portability cruft for GNU Make.
+Copyright (C) 2023-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*
+  This file is included at the end of config.h
+
+   That means it's included _everywhere_ as the first thing,
+   INCLUDING content imported from gnulib.  BE AWARE!!
+*/
+
+#undef  HAVE_CONFIG_H
+#define HAVE_CONFIG_H 1
+
+/* Specify we want GNU source code.  This must be defined before any
+   system headers are included.  */
+
+#define _GNU_SOURCE 1
+
+/* AIX requires this to be the first thing in the file.  */
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#else
+# ifdef _AIX
+ #pragma alloca
+# else
+#  if !defined(__GNUC__) && !MK_OS_W32
+#   ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+/* Declare function prototypes for src/misc.c functions if needed.  */
+
+#include <stddef.h>
+
+#if !HAVE_STRCASECMP && !HAVE_STRICMP && !HAVE_STRCMPI
+int strcasecmp (const char *s1, const char *s2);
+#endif
+
+#if !HAVE_STRNCASECMP && !HAVE_STRNICMP && !HAVE_STRNCMPI
+int strncasecmp (const char *s1, const char *s2, size_t n);
+#endif
+
+#if !HAVE_MEMPCPY
+void *mempcpy (void *dest, const void *src, size_t n);
+#endif
+
+#if !HAVE_STPCPY
+char *stpcpy (char *dest, const char *src);
+#endif

src/os.h

@@ -0,0 +1,168 @@
+/* Declarations for operating system interfaces for GNU Make.
+Copyright (C) 2016-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#define IO_UNKNOWN              0x0001
+#define IO_COMBINED_OUTERR      0x0002
+#define IO_STDIN_OK             0x0004
+#define IO_STDOUT_OK            0x0008
+#define IO_STDERR_OK            0x0010
+
+#if MK_OS_VMS || MK_OS_DOS
+# define check_io_state()       (IO_STDIN_OK|IO_STDOUT_OK|IO_STDERR_OK)
+# define fd_inherit(_i)         (0)
+# define fd_noinherit(_i)       (0)
+# define fd_set_append(_i)      (-1)
+# define fd_reset_append(_i,_f) (void)(0)
+# define os_anontmp()           (-1)
+#else
+
+/* Determine the state of stdin/stdout/stderr.  */
+unsigned int check_io_state (void);
+
+/* Set a file descriptor to close/not close in a subprocess.  */
+void fd_inherit (int fd);
+void fd_noinherit (int fd);
+
+/* If the file descriptor is for a file put it into append mode.
+   Return the original flags for the file descriptor, or -1 if not found.  */
+int fd_set_append (int fd);
+
+/* Reset the append mode to the flags returned by fd_set_append().  */
+void fd_reset_append (int fd, int flags);
+
+/* Return a file descriptor for a new anonymous temp file, or -1.  */
+int os_anontmp (void);
+#endif
+
+/* This section provides OS-specific functions to support the jobserver.  */
+
+#ifdef MAKE_JOBSERVER
+
+/* Returns 1 if the jobserver is enabled, else 0.  */
+unsigned int jobserver_enabled (void);
+
+/* Called in the parent make to set up the jobserver initially.  */
+unsigned int jobserver_setup (int job_slots, const char *style);
+
+/* Called in a child instance to connect to the jobserver.
+   Return 1 if we got a valid auth, else 0.  */
+unsigned int jobserver_parse_auth (const char* auth);
+
+/* Returns an allocated buffer used to pass to child instances.  */
+char *jobserver_get_auth (void);
+
+/* Returns a pointer to a static string used to indicate that the child
+   cannot access the jobserver, or NULL if it always can.  */
+const char *jobserver_get_invalid_auth (void);
+
+/* Clear this instance's jobserver configuration.
+   This method might be invoked from a signal handler.  */
+void jobserver_clear (void);
+
+/* Recover all the jobserver tokens and return the number we got.
+   Will also run jobserver_clear() as a side-effect.  */
+unsigned int jobserver_acquire_all (void);
+
+/* Release a jobserver token.  If it fails and is_fatal is 1, fatal.  */
+void jobserver_release (int is_fatal);
+
+/* Notify the jobserver that a child exited.  */
+void jobserver_signal (void);
+
+/* Get ready to start a non-recursive child.  */
+void jobserver_pre_child (int);
+
+/* Complete starting a non-recursive child.  */
+void jobserver_post_child (int);
+
+/* Set up to acquire a new token.  */
+void jobserver_pre_acquire (void);
+
+/* Wait until we can acquire a jobserver token.
+   TIMEOUT is 1 if we have other jobs waiting for the load to go down;
+   in this case we won't wait forever, so we can check the load.
+   Returns 1 if we got a token, or 0 if we stopped waiting due to a child
+   exiting or a timeout.    */
+unsigned int jobserver_acquire (int timeout);
+
+#else
+
+#define jobserver_enabled()             (0)
+#define jobserver_setup(_slots, _style) (0)
+#define jobserver_parse_auth(_auth)     (0)
+#define jobserver_get_auth()            (NULL)
+#define jobserver_get_invalid_auth()    (NULL)
+#define jobserver_clear()               (void)(0)
+#define jobserver_release(_fatal)       (void)(0)
+#define jobserver_acquire_all()         (0)
+#define jobserver_signal()              (void)(0)
+#define jobserver_pre_child(_r)         (void)(0)
+#define jobserver_post_child(_r)        (void)(0)
+#define jobserver_pre_acquire()         (void)(0)
+#define jobserver_acquire(_tmout)       (0)
+
+#endif  /* MAKE_JOBSERVER */
+
+#ifndef NO_OUTPUT_SYNC
+
+/* Returns 1 if output sync is enabled, else 0.  */
+unsigned int osync_enabled (void);
+
+/* Called in the parent make to set up output sync initially.  */
+void osync_setup (void);
+
+/* Returns an allocated buffer containing output sync info to pass to child
+   instances, or NULL if not needed.  */
+char *osync_get_mutex (void);
+
+/* Called in a child instance to obtain info on the output sync mutex.
+   Return 1 if we got a valid mutex, else 0.  */
+unsigned int osync_parse_mutex (const char *mutex);
+
+/* Clean up this instance's output sync facilities.
+   This method might be invoked from a signal handler.  */
+void osync_clear (void);
+
+/* Acquire the output sync lock.  This will wait until available.
+   Returns 0 if there was an error getting the semaphore.  */
+unsigned int osync_acquire (void);
+
+/* Release the output sync lock.  */
+void osync_release (void);
+
+#else
+
+#define osync_enabled()       (0)
+#define osync_setup()         (void)(0)
+#define osync_get_mutex()     (0)
+#define osync_parse_mutex(_s) (0)
+#define osync_clear()         (void)(0)
+#define osync_acquire()       (1)
+#define osync_release()       (void)(0)
+
+#endif  /* NO_OUTPUT_SYNC */
+
+/* Create a "bad" file descriptor for stdin when parallel jobs are run.  */
+#if MK_OS_VMS || MK_OS_W32 || MK_OS_DOS
+# define get_bad_stdin() (-1)
+#else
+int get_bad_stdin (void);
+#endif
+
+#if MK_OS_W32
+#include <windows.h> /* Needed for HANDLE */
+HANDLE get_handle_for_fd (int);
+#endif

src/output.c

@@ -0,0 +1,559 @@
+/* Output to stdout / stderr for GNU Make
+Copyright (C) 2013-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "os.h"
+#include "output.h"
+
+/* GNU Make no longer supports pre-ANSI89 environments.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+#if MK_OS_W32
+# include <windows.h>
+# include <io.h>
+# include "sub_proc.h"
+#endif
+
+struct output *output_context = NULL;
+unsigned int stdio_traced = 0;
+
+#define OUTPUT_NONE (-1)
+
+#define OUTPUT_ISSET(_out) ((_out)->out >= 0 || (_out)->err >= 0)
+
+/* Write a string to the current STDOUT or STDERR.  */
+static void
+_outputs (struct output *out, int is_err, const char *msg)
+{
+  FILE *f;
+
+  if (out && out->syncout)
+    {
+      int fd = is_err ? out->err : out->out;
+      if (fd != OUTPUT_NONE)
+        {
+          size_t len = strlen (msg);
+          int r;
+          EINTRLOOP (r, lseek (fd, 0, SEEK_END));
+          writebuf (fd, msg, len);
+          return;
+        }
+    }
+
+  f = is_err ? stderr : stdout;
+  fputs (msg, f);
+  fflush (f);
+}
+
+/* Write a message indicating that we've just entered or
+   left (according to ENTERING) the current directory.  */
+
+static int
+log_working_directory (int entering)
+{
+  static char *buf = NULL;
+  static size_t len = 0;
+  size_t need;
+  const char *fmt;
+  char *p;
+
+  /* Get enough space for the longest possible output.  */
+  need = strlen (program) + INTSTR_LENGTH + 2 + 1;
+  if (starting_directory)
+    need += strlen (starting_directory);
+
+  /* Use entire sentences to give the translators a fighting chance.  */
+  if (makelevel == 0)
+    if (starting_directory == 0)
+      if (entering)
+        fmt = _("%s: Entering an unknown directory\n");
+      else
+        fmt = _("%s: Leaving an unknown directory\n");
+    else
+      if (entering)
+        fmt = _("%s: Entering directory '%s'\n");
+      else
+        fmt = _("%s: Leaving directory '%s'\n");
+  else
+    if (starting_directory == 0)
+      if (entering)
+        fmt = _("%s[%u]: Entering an unknown directory\n");
+      else
+        fmt = _("%s[%u]: Leaving an unknown directory\n");
+    else
+      if (entering)
+        fmt = _("%s[%u]: Entering directory '%s'\n");
+      else
+        fmt = _("%s[%u]: Leaving directory '%s'\n");
+
+  need += strlen (fmt);
+
+  if (need > len)
+    {
+      buf = xrealloc (buf, need);
+      len = need;
+    }
+
+  p = buf;
+  if (print_data_base_flag)
+    {
+      *(p++) = '#';
+      *(p++) = ' ';
+    }
+
+  if (makelevel == 0)
+    if (starting_directory == 0)
+      sprintf (p, fmt , program);
+    else
+      sprintf (p, fmt, program, starting_directory);
+  else if (starting_directory == 0)
+    sprintf (p, fmt, program, makelevel);
+  else
+    sprintf (p, fmt, program, makelevel, starting_directory);
+
+  _outputs (NULL, 0, buf);
+
+  return 1;
+}
+
+
+#ifndef NO_OUTPUT_SYNC
+
+/* Support routine for output_sync() */
+static void
+pump_from_tmp (int from, FILE *to)
+{
+  static char buffer[8192];
+
+#if MK_OS_W32
+  int prev_mode;
+
+  /* "from" is opened by open_tmpfd, which does it in binary mode, so
+     we need the mode of "to" to match that.  */
+  prev_mode = _setmode (fileno (to), _O_BINARY);
+#endif
+
+  if (lseek (from, 0, SEEK_SET) == -1)
+    perror ("lseek()");
+
+  while (1)
+    {
+      int len;
+      EINTRLOOP (len, read (from, buffer, sizeof (buffer)));
+      if (len < 0)
+        perror ("read()");
+      if (len <= 0)
+        break;
+      if (fwrite (buffer, len, 1, to) < 1)
+        {
+          perror ("fwrite()");
+          break;
+        }
+      fflush (to);
+    }
+
+#if MK_OS_W32
+  /* Switch "to" back to its original mode, so that log messages by
+     Make have the same EOL format as without --output-sync.  */
+  _setmode (fileno (to), prev_mode);
+#endif
+}
+
+/* Returns a file descriptor to a temporary file, that will be automatically
+   deleted on exit.  */
+int
+output_tmpfd (void)
+{
+  int fd = get_tmpfd (NULL);
+  fd_set_append (fd);
+  return fd;
+}
+
+/* Adds file descriptors to the child structure to support output_sync; one
+   for stdout and one for stderr as long as they are open.  If stdout and
+   stderr share a device they can share a temp file too.
+   Will reset output_sync on error.  */
+static void
+setup_tmpfile (struct output *out)
+{
+  static unsigned int in_setup = 0;
+  unsigned int io_state;
+
+  /* If something fails during setup we might recurse back into this function
+     while writing errors.  Make sure we don't do so infinitely.  */
+  if (in_setup)
+    return;
+  in_setup = 1;
+
+  io_state = check_io_state ();
+
+  if (NONE_SET (io_state, IO_STDOUT_OK|IO_STDERR_OK))
+    {
+      /* This is probably useless since stdout/stderr aren't working. */
+      perror_with_name ("output-sync suppressed: ", "stderr");
+      goto error;
+    }
+
+  if (ANY_SET (io_state, IO_STDOUT_OK))
+    {
+      int fd = output_tmpfd ();
+      if (fd < 0)
+        goto error;
+      fd_noinherit (fd);
+      out->out = fd;
+    }
+
+  if (ANY_SET (io_state, IO_STDERR_OK))
+    {
+      if (out->out != OUTPUT_NONE && ANY_SET (io_state, IO_COMBINED_OUTERR))
+        out->err = out->out;
+      else
+        {
+          int fd = output_tmpfd ();
+          if (fd < 0)
+            goto error;
+          fd_noinherit (fd);
+          out->err = fd;
+        }
+    }
+
+  in_setup = 0;
+  return;
+
+  /* If we failed to create a temp file, disable output sync going forward.  */
+ error:
+  O (error, NILF,
+     _("cannot open output-sync lock file: suppressing output-sync"));
+
+  output_close (out);
+  output_sync = OUTPUT_SYNC_NONE;
+  osync_clear ();
+  in_setup = 0;
+}
+
+/* Synchronize the output of jobs in -j mode to keep the results of
+   each job together. This is done by holding the results in temp files,
+   one for stdout and potentially another for stderr, and only releasing
+   them to "real" stdout/stderr when a semaphore can be obtained. */
+
+void
+output_dump (struct output *out)
+{
+#define FD_NOT_EMPTY(_f) ((_f) != OUTPUT_NONE && lseek ((_f), 0, SEEK_END) > 0)
+
+  int outfd_not_empty = FD_NOT_EMPTY (out->out);
+  int errfd_not_empty = FD_NOT_EMPTY (out->err);
+
+  if (outfd_not_empty || errfd_not_empty)
+    {
+      int traced = 0;
+
+      /* Try to acquire the semaphore.  If it fails, dump the output
+         unsynchronized; still better than silently discarding it.
+         We want to keep this lock for as little time as possible.  */
+      if (!osync_acquire ())
+        {
+          O (error, NILF,
+             _("warning: cannot acquire output lock: disabling output sync"));
+          osync_clear ();
+        }
+
+      /* Log the working directory for this dump.  */
+
+      if (output_sync != OUTPUT_SYNC_RECURSE && should_print_dir ())
+        traced = log_working_directory (1);
+
+      if (outfd_not_empty)
+        pump_from_tmp (out->out, stdout);
+      if (errfd_not_empty && out->err != out->out)
+        pump_from_tmp (out->err, stderr);
+
+      if (traced)
+        log_working_directory (0);
+
+      /* Exit the critical section.  */
+      osync_release ();
+
+      /* Truncate and reset the output, in case we use it again.  */
+      if (out->out != OUTPUT_NONE)
+        {
+          int e;
+          lseek (out->out, 0, SEEK_SET);
+          EINTRLOOP (e, ftruncate (out->out, 0));
+        }
+      if (out->err != OUTPUT_NONE && out->err != out->out)
+        {
+          int e;
+          lseek (out->err, 0, SEEK_SET);
+          EINTRLOOP (e, ftruncate (out->err, 0));
+        }
+    }
+}
+#endif /* NO_OUTPUT_SYNC */
+
+
+static int stdout_flags = -1;
+static int stderr_flags = -1;
+
+void
+output_init (struct output *out)
+{
+  if (out)
+    {
+      out->out = out->err = OUTPUT_NONE;
+      out->syncout = !!output_sync;
+      return;
+    }
+
+  /* Force stdout/stderr into append mode (if they are files) to ensure
+     parallel jobs won't lose output due to overlapping writes.  */
+  stdout_flags = fd_set_append (fileno (stdout));
+  stderr_flags = fd_set_append (fileno (stderr));
+}
+
+void
+output_close (struct output *out)
+{
+  if (! out)
+    {
+      if (stdio_traced)
+        log_working_directory (0);
+      fd_reset_append(fileno (stdout), stdout_flags);
+      fd_reset_append(fileno (stderr), stderr_flags);
+      return;
+    }
+
+#ifndef NO_OUTPUT_SYNC
+  output_dump (out);
+#endif
+
+  if (out->out >= 0)
+    close (out->out);
+  if (out->err >= 0 && out->err != out->out)
+    close (out->err);
+
+  output_init (out);
+}
+
+/* We're about to generate output: be sure it's set up.  */
+void
+output_start (void)
+{
+#ifndef NO_OUTPUT_SYNC
+  /* If we're syncing output make sure the temporary file is set up.  */
+  if (output_context && output_context->syncout)
+    if (! OUTPUT_ISSET(output_context))
+      setup_tmpfile (output_context);
+#endif
+
+  /* If we're not syncing this output per-line or per-target, make sure we emit
+     the "Entering..." message where appropriate.  */
+  if (output_sync == OUTPUT_SYNC_NONE || output_sync == OUTPUT_SYNC_RECURSE)
+    if (! stdio_traced && should_print_dir ())
+      stdio_traced = log_working_directory (1);
+}
+
+void
+outputs (int is_err, const char *msg)
+{
+  if (! msg || *msg == '\0')
+    return;
+
+  output_start ();
+
+  _outputs (output_context, is_err, msg);
+}
+
+
+static struct fmtstring
+  {
+    char *buffer;
+    size_t size;
+  } fmtbuf = { NULL, 0 };
+
+static char *
+get_buffer (size_t need)
+{
+  /* Make sure we have room.  NEED includes space for \0.  */
+  if (need > fmtbuf.size)
+    {
+      fmtbuf.size += need * 2;
+      fmtbuf.buffer = xrealloc (fmtbuf.buffer, fmtbuf.size);
+    }
+
+  fmtbuf.buffer[need-1] = '\0';
+
+  return fmtbuf.buffer;
+}
+
+/* Print a message on stdout.  */
+
+void
+message (int prefix, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  char *start;
+  char *p;
+
+  len += strlen (fmt) + strlen (program) + INTSTR_LENGTH + 4 + 1 + 1;
+  start = p = get_buffer (len);
+
+  if (prefix)
+    p += (makelevel == 0
+          ? sprintf (p, "%s: ", program)
+          : sprintf (p, "%s[%u]: ", program, makelevel));
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, "\n");
+
+  assert (start[len-1] == '\0');
+  outputs (0, start);
+}
+
+/* Print an error message.  */
+
+void
+error (const floc *flocp, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  char *start;
+  char *p;
+
+  len += (strlen (fmt) + strlen (program)
+          + (flocp && flocp->filenm ? strlen (flocp->filenm) : 0)
+          + INTSTR_LENGTH + 4 + 1 + 1);
+  start = p = get_buffer (len);
+
+  p += (flocp && flocp->filenm
+        ? sprintf (p, "%s:%lu: ", flocp->filenm, flocp->lineno + flocp->offset)
+        : makelevel == 0
+        ? sprintf (p, "%s: ", program)
+        : sprintf (p, "%s[%u]: ", program, makelevel));
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, "\n");
+
+  assert (start[len-1] == '\0');
+  outputs (1, start);
+}
+
+/* Print an error message and exit.  */
+
+void
+fatal (const floc *flocp, size_t len, const char *fmt, ...)
+{
+  const char *stop = _(".  Stop.\n");
+  va_list args;
+  char *start;
+  char *p;
+
+  len += (strlen (fmt) + strlen (program)
+          + (flocp && flocp->filenm ? strlen (flocp->filenm) : 0)
+          + INTSTR_LENGTH + 8 + strlen (stop) + 1);
+  start = p = get_buffer (len);
+
+  p += (flocp && flocp->filenm
+        ? sprintf (p, "%s:%lu: *** ", flocp->filenm,
+                   flocp->lineno + flocp->offset)
+        : makelevel == 0
+        ? sprintf (p, "%s: *** ", program)
+        : sprintf (p, "%s[%u]: *** ", program, makelevel));
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, stop);
+
+  assert (start[len-1] == '\0');
+  outputs (1, start);
+
+  die (MAKE_FAILURE);
+}
+
+/* Format a message and return a pointer to an internal buffer.  */
+
+char *
+format (const char *prefix, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  size_t plen = prefix ? strlen (prefix) : 0;
+  char *start;
+  char *p;
+
+  len += strlen (fmt) + plen + 1;
+  start = p = get_buffer (len);
+
+  if (plen)
+    p = mempcpy (p, prefix, plen);
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  return start;
+}
+
+/* Print an error message from errno.  */
+
+void
+perror_with_name (const char *str, const char *name)
+{
+  const char *err = strerror (errno);
+  OSSS (error, NILF, _("%s%s: %s"), str, name, err);
+}
+
+/* Print an error message from errno and exit.  */
+
+void
+pfatal_with_name (const char *name)
+{
+  const char *err = strerror (errno);
+  OSS (fatal, NILF, _("%s: %s"), name, err);
+
+  /* NOTREACHED */
+}
+
+/* Print a message about out of memory (not using more heap) and exit.
+   Our goal here is to be sure we don't try to allocate more memory, which
+   means we don't want to use string translations or normal cleanup.  */
+
+void
+out_of_memory ()
+{
+  writebuf (FD_STDOUT, program, strlen (program));
+  writebuf (FD_STDOUT, STRING_SIZE_TUPLE (": *** virtual memory exhausted\n"));
+  exit (MAKE_FAILURE);
+}

src/output.h

@@ -0,0 +1,58 @@
+/* Output to stdout / stderr for GNU Make
+Copyright (C) 2013-2024 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+struct output
+  {
+    int out;
+    int err;
+    unsigned int syncout:1;     /* True if we want to synchronize output.  */
+ };
+
+extern struct output *output_context;
+extern unsigned int stdio_traced;
+
+#define FD_STDIN  (fileno (stdin))
+#define FD_STDOUT (fileno (stdout))
+#define FD_STDERR (fileno (stderr))
+
+#define OUTPUT_SET(_new)    do{ output_context = (_new)->syncout ? (_new) : NULL; }while(0)
+#define OUTPUT_UNSET()      do{ output_context = NULL; }while(0)
+
+#define OUTPUT_TRACED()     do{ stdio_traced = 1; }while(0)
+#define OUTPUT_IS_TRACED()  (!!stdio_traced)
+
+/* Write a buffer directly to the given file descriptor.
+   This handles errors etc.  */
+int output_write (int fd, const void *buffer, size_t len);
+
+/* Initialize and close a child output structure: if NULL do this program's
+   output (this should only be done once).  */
+void output_init (struct output *out);
+void output_close (struct output *out);
+
+/* In situations where output may be about to be displayed but we're not
+   sure if we've set it up yet, call this.  */
+void output_start (void);
+
+/* Show a message on stdout or stderr.  Will start the output if needed.  */
+void outputs (int is_err, const char *msg);
+
+#if defined(NO_OUTPUT_SYNC)
+# define output_dump(_o) (void)(0)
+#else
+/* Dump any child output content to stdout, and reset it.  */
+void output_dump (struct output *out);
+#endif