PostgreSQL

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Andres Freund c04d35f442 Try to detect runtime unavailability of __builtin_mul_overflow(int64).

On some systems the results of 64 bit __builtin_mul_overflow()
operations can be computed at compile time, but not at runtime. The
known cases are arm buildfar animals using clang where the runtime
operation is implemented in a unavailable function.

Try to avoid compile-time computation by using volatile arguments to
__builtin_mul_overflow(). In that case we hopefully will get a link
error when unavailable, similar to what buildfarm animals dangomushi
and gull are reporting.

Author: Andres Freund
Discussion: https://postgr.es/m/20171213213754.pydkyjs6bt2hvsdb@alap3.anarazel.de

2017-12-16 12:49:41 -08:00

ac_func_accept_argtypes.m4

Remove some configure header-file checks that we weren't really using.

2017-02-25 18:10:09 -05:00

ax_prog_perl_modules.m4

Make configure check for IPC::Run when --enable-tap-tests is specified.

2017-06-15 15:56:12 -04:00

ax_pthread.m4

Update ax_pthread.m4 to an experimental draft version from upstream.

2015-07-30 14:14:50 +03:00

c-compiler.m4

Try to detect runtime unavailability of __builtin_mul_overflow(int64).