Remove error message hints mentioning configure options

These are usually not useful since users will use packaged
distributions and won't be interested in rebuilding their installation
from source.  Also, we have only used these kinds of hints for some
features and in some places, not consistently throughout.

Reviewed-by: Andres Freund <andres@anarazel.de>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/2552aed7-d0e9-280a-54aa-2dc7073f371d%40enterprisedb.com

src/backend/access/common/toast_compression.c

@@ -30,8 +30,7 @@ int			default_toast_compression = TOAST_PGLZ_COMPRESSION;
 	ereport(ERROR, \
 			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), \
 			 errmsg("compression method lz4 not supported"), \
-			 errdetail("This functionality requires the server to be built with lz4 support."), \
+			 errdetail("This functionality requires the server to be built with lz4 support.")))
-			 errhint("You need to rebuild PostgreSQL using %s.", "--with-lz4")))
 
 /*
  * Compress a varlena using PGLZ.

src/backend/libpq/hba.c

@@ -1010,7 +1010,6 @@ parse_hba_line(TokenizedAuthLine *tok_line, int elevel)
 			ereport(elevel,
 					(errcode(ERRCODE_CONFIG_FILE_ERROR),
 					 errmsg("hostssl record cannot match because SSL is not supported by this build"),
-					 errhint("Compile with --with-ssl to use SSL connections."),
 					 errcontext("line %d of configuration file \"%s\"",
 								line_num, HbaFileName)));
 			*err_msg = "hostssl record cannot match because SSL is not supported by this build";
@@ -1023,7 +1022,6 @@ parse_hba_line(TokenizedAuthLine *tok_line, int elevel)
 			ereport(elevel,
 					(errcode(ERRCODE_CONFIG_FILE_ERROR),
 					 errmsg("hostgssenc record cannot match because GSSAPI is not supported by this build"),
-					 errhint("Compile with --with-gssapi to use GSSAPI connections."),
 					 errcontext("line %d of configuration file \"%s\"",
 								line_num, HbaFileName)));
 			*err_msg = "hostgssenc record cannot match because GSSAPI is not supported by this build";

src/backend/utils/adt/pg_locale.c

@@ -1462,8 +1462,7 @@ make_icu_collator(const char *iculocstr,
 	/* could get here if a collation was created by a build with ICU */
 	ereport(ERROR,
 			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-			 errmsg("ICU is not supported in this build"), \
+			 errmsg("ICU is not supported in this build")));
-			 errhint("You need to rebuild PostgreSQL using %s.", "--with-icu")));
 #endif							/* not USE_ICU */
 }
 
@@ -2008,8 +2007,7 @@ check_icu_locale(const char *icu_locale)
 #else
 	ereport(ERROR,
 			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-			 errmsg("ICU is not supported in this build"), \
+			 errmsg("ICU is not supported in this build")));
-			 errhint("You need to rebuild PostgreSQL using %s.", "--with-icu")));
 #endif
 }
 

src/backend/utils/adt/xml.c

@@ -220,8 +220,7 @@ const TableFuncRoutine XmlTableRoutine =
 	ereport(ERROR, \
 			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED), \
 			 errmsg("unsupported XML feature"), \
-			 errdetail("This functionality requires the server to be built with libxml support."), \
+			 errdetail("This functionality requires the server to be built with libxml support.")))
-			 errhint("You need to rebuild PostgreSQL using %s.", "--with-libxml")))
 
 
 /* from SQL/XML:2008 section 4.9 */

src/bin/initdb/initdb.c

@@ -2214,7 +2214,6 @@ setlocales(void)
 		 */
 #ifndef USE_ICU
 		pg_log_error("ICU is not supported in this build");
-		fprintf(stderr, _("You need to rebuild PostgreSQL using %s.\n"), "--with-icu");
 		exit(1);
 #endif
 	}

src/test/regress/expected/compression_1.out

@@ -16,7 +16,6 @@ Indexes:
 CREATE TABLE cmdata1(f1 TEXT COMPRESSION lz4);
 ERROR:  compression method lz4 not supported
 DETAIL:  This functionality requires the server to be built with lz4 support.
-HINT:  You need to rebuild PostgreSQL using --with-lz4.
 INSERT INTO cmdata1 VALUES(repeat('1234567890', 1004));
 ERROR:  relation "cmdata1" does not exist
 LINE 1: INSERT INTO cmdata1 VALUES(repeat('1234567890', 1004));
@@ -195,7 +194,6 @@ LINE 1: SELECT pg_column_compression(x) FROM compressmv;
 CREATE TABLE cmpart(f1 text COMPRESSION lz4) PARTITION BY HASH(f1);
 ERROR:  compression method lz4 not supported
 DETAIL:  This functionality requires the server to be built with lz4 support.
-HINT:  You need to rebuild PostgreSQL using --with-lz4.
 CREATE TABLE cmpart1 PARTITION OF cmpart FOR VALUES WITH (MODULUS 2, REMAINDER 0);
 ERROR:  relation "cmpart" does not exist
 CREATE TABLE cmpart2(f1 text COMPRESSION pglz);
@@ -240,7 +238,6 @@ SET default_toast_compression = 'pglz';
 ALTER TABLE cmdata ALTER COLUMN f1 SET COMPRESSION lz4;
 ERROR:  compression method lz4 not supported
 DETAIL:  This functionality requires the server to be built with lz4 support.
-HINT:  You need to rebuild PostgreSQL using --with-lz4.
 INSERT INTO cmdata VALUES (repeat('123456789', 4004));
 \d+ cmdata
                                         Table "public.cmdata"
@@ -274,7 +271,6 @@ ERROR:  relation "cmpart1" does not exist
 ALTER TABLE cmpart2 ALTER COLUMN f1 SET COMPRESSION lz4;
 ERROR:  compression method lz4 not supported
 DETAIL:  This functionality requires the server to be built with lz4 support.
-HINT:  You need to rebuild PostgreSQL using --with-lz4.
 -- new data should be compressed with the current compression method
 INSERT INTO cmpart VALUES (repeat('123456789', 1004));
 ERROR:  relation "cmpart" does not exist
@@ -314,7 +310,6 @@ DROP TABLE cmdata2;
 CREATE TABLE cmdata2 (f1 TEXT COMPRESSION pglz, f2 TEXT COMPRESSION lz4);
 ERROR:  compression method lz4 not supported
 DETAIL:  This functionality requires the server to be built with lz4 support.
-HINT:  You need to rebuild PostgreSQL using --with-lz4.
 CREATE UNIQUE INDEX idx1 ON cmdata2 ((f1 || f2));
 ERROR:  relation "cmdata2" does not exist
 INSERT INTO cmdata2 VALUES((SELECT array_agg(md5(g::TEXT))::TEXT FROM

src/test/regress/expected/xml_1.out

@@ -7,19 +7,16 @@ ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest VALUES (1, '<value>one</value>');
                                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest VALUES (2, '<value>two</value>');
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest VALUES (2, '<value>two</value>');
                                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest VALUES (3, '<wrong');
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest VALUES (3, '<wrong');
                                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT * FROM xmltest;
  id | data 
 ----+------
@@ -28,35 +25,28 @@ SELECT * FROM xmltest;
 SELECT xmlcomment('test');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlcomment('-test');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlcomment('test-');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlcomment('--test');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlcomment('te st');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlconcat(xmlcomment('hello'),
                  xmlelement(NAME qux, 'foo'),
                  xmlcomment('world'));
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlconcat('hello', 'you');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlconcat('hello', 'you');
                          ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlconcat(1, 2);
 ERROR:  argument of XMLCONCAT must be type xml, not type integer
 LINE 1: SELECT xmlconcat(1, 2);
@@ -66,19 +56,16 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT xmlconcat('bad', '<syntax');
                          ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlconcat('<foo/>', NULL, '<?xml version="1.1" standalone="no"?><bar/>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlconcat('<foo/>', NULL, '<?xml version="1.1" standa...
                          ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlconcat('<?xml version="1.1"?><foo/>', NULL, '<?xml version="1.1" standalone="no"?><bar/>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlconcat('<?xml version="1.1"?><foo/>', NULL, '<?xml...
                          ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlconcat(NULL);
  xmlconcat 
 -----------
@@ -96,238 +83,184 @@ SELECT xmlelement(name element,
                   'content');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name element,
                   xmlattributes ('unnamed and wrong'));
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name element, xmlelement(name nested, 'stuff'));
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name employee, xmlforest(name, age, salary as pay)) FROM emp;
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name duplicate, xmlattributes(1 as a, 2 as b, 3 as a));
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name num, 37);
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, text 'bar');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, xml 'bar');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, text 'b<a/>r');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, xml 'b<a/>r');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, array[1, 2, 3]);
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SET xmlbinary TO base64;
 SELECT xmlelement(name foo, bytea 'bar');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SET xmlbinary TO hex;
 SELECT xmlelement(name foo, bytea 'bar');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, xmlattributes(true as bar));
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, xmlattributes('2009-04-09 00:24:37'::timestamp as bar));
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, xmlattributes('infinity'::timestamp as bar));
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlelement(name foo, xmlattributes('<>&"''' as funny, xml 'b<a/>r' as funnier));
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '  ');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content 'abc');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '<abc>x</abc>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '<invalidentity>&</invalidentity>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '<undefinedentity>&idontexist;</undefinedentity>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '<invalidns xmlns=''&lt;''/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '<relativens xmlns=''relative''/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '<twoerrors>&idontexist;</unbalanced>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content '<nosuchprefix:tag/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document '   ');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document 'abc');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document '<abc>x</abc>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document '<invalidentity>&</abc>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document '<undefinedentity>&idontexist;</abc>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document '<invalidns xmlns=''&lt;''/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document '<relativens xmlns=''relative''/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document '<twoerrors>&idontexist;</unbalanced>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(document '<nosuchprefix:tag/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name foo);
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name xml);
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name xmlstuff);
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name foo, 'bar');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name foo, 'in?>valid');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name foo, null);
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name xml, null);
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name xmlstuff, null);
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name "xml-stylesheet", 'href="mystyle.css" type="text/css"');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name foo, '   bar');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot(xml '<foo/>', version no value, standalone no value);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlroot(xml '<foo/>', version no value, standalone no...
                            ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot(xml '<foo/>', version '2.0');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlroot(xml '<foo/>', version '2.0');
                            ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot(xml '<foo/>', version no value, standalone yes);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlroot(xml '<foo/>', version no value, standalone ye...
                            ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot(xml '<?xml version="1.1"?><foo/>', version no value, standalone yes);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlroot(xml '<?xml version="1.1"?><foo/>', version no...
                            ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot(xmlroot(xml '<foo/>', version '1.0'), version '1.1', standalone no);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlroot(xmlroot(xml '<foo/>', version '1.0'), version...
                                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>', version no value, standalone no);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>...
                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>', version no value, standalone no value);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>...
                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>', version no value);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlroot('<?xml version="1.1" standalone="yes"?><foo/>...
                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlroot (
   xmlelement (
     name gazonk,
@@ -345,7 +278,6 @@ SELECT xmlroot (
 );
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlserialize(content data as character varying(20)) FROM xmltest;
  xmlserialize 
 --------------
@@ -356,43 +288,36 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT xmlserialize(content 'good' as char(10));
                                     ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlserialize(document 'bad' as text);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xmlserialize(document 'bad' as text);
                                      ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml '<foo>bar</foo>' IS DOCUMENT;
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<foo>bar</foo>' IS DOCUMENT;
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml '<foo>bar</foo><bar>foo</bar>' IS DOCUMENT;
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<foo>bar</foo><bar>foo</bar>' IS DOCUMENT;
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml '<abc/>' IS NOT DOCUMENT;
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<abc/>' IS NOT DOCUMENT;
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml 'abc' IS NOT DOCUMENT;
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml 'abc' IS NOT DOCUMENT;
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT '<>' IS NOT DOCUMENT;
 ERROR:  unsupported XML feature
 LINE 1: SELECT '<>' IS NOT DOCUMENT;
                ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlagg(data) FROM xmltest;
  xmlagg 
 --------
@@ -408,22 +333,18 @@ SELECT xmlagg(data) FROM xmltest WHERE id > 10;
 SELECT xmlelement(name employees, xmlagg(xmlelement(name name, name))) FROM emp;
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- Check mapping SQL identifier to XML name
 SELECT xmlpi(name ":::_xml_abc135.%-&_");
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlpi(name "123");
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 PREPARE foo (xml) AS SELECT xmlconcat('<foo/>', $1);
 ERROR:  unsupported XML feature
 LINE 1: PREPARE foo (xml) AS SELECT xmlconcat('<foo/>', $1);
                                               ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SET XML OPTION DOCUMENT;
 EXECUTE foo ('<bar/>');
 ERROR:  prepared statement "foo" does not exist
@@ -434,7 +355,6 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<!DOCTYPE a><a/><b/>';
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SET XML OPTION CONTENT;
 EXECUTE foo ('<bar/>');
 ERROR:  prepared statement "foo" does not exist
@@ -445,37 +365,31 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<!-- in SQL:2006+ a doc is content too--> <?y z?...
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml '<?xml version="1.0"?> <!-- hi--> <!DOCTYPE a><a/>';
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<?xml version="1.0"?> <!-- hi--> <!DOCTYPE a><a/...
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml '<!DOCTYPE a><a/>';
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<!DOCTYPE a><a/>';
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml '<!-- hi--> oops <!DOCTYPE a><a/>';
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<!-- hi--> oops <!DOCTYPE a><a/>';
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml '<!-- hi--> <oops/> <!DOCTYPE a><a/>';
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<!-- hi--> <oops/> <!DOCTYPE a><a/>';
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml '<!DOCTYPE a><a/><b/>';
 ERROR:  unsupported XML feature
 LINE 1: SELECT xml '<!DOCTYPE a><a/><b/>';
                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- Test backwards parsing
 CREATE VIEW xmlview1 AS SELECT xmlcomment('test');
 CREATE VIEW xmlview2 AS SELECT xmlconcat('hello', 'you');
@@ -483,38 +397,31 @@ ERROR:  unsupported XML feature
 LINE 1: CREATE VIEW xmlview2 AS SELECT xmlconcat('hello', 'you');
                                                  ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 CREATE VIEW xmlview3 AS SELECT xmlelement(name element, xmlattributes (1 as ":one:", 'deuce' as two), 'content&');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 CREATE VIEW xmlview4 AS SELECT xmlelement(name employee, xmlforest(name, age, salary as pay)) FROM emp;
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 CREATE VIEW xmlview5 AS SELECT xmlparse(content '<abc>x</abc>');
 CREATE VIEW xmlview6 AS SELECT xmlpi(name foo, 'bar');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 CREATE VIEW xmlview7 AS SELECT xmlroot(xml '<foo/>', version no value, standalone yes);
 ERROR:  unsupported XML feature
 LINE 1: CREATE VIEW xmlview7 AS SELECT xmlroot(xml '<foo/>', version...
                                                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 CREATE VIEW xmlview8 AS SELECT xmlserialize(content 'good' as char(10));
 ERROR:  unsupported XML feature
 LINE 1: ...EATE VIEW xmlview8 AS SELECT xmlserialize(content 'good' as ...
                                                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 CREATE VIEW xmlview9 AS SELECT xmlserialize(content 'good' as text);
 ERROR:  unsupported XML feature
 LINE 1: ...EATE VIEW xmlview9 AS SELECT xmlserialize(content 'good' as ...
                                                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_name, view_definition FROM information_schema.views
   WHERE table_name LIKE 'xmlview%' ORDER BY 1;
  table_name |                                view_definition                                 
@@ -539,91 +446,76 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('', '<!-- error -->');
                          ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('//text()', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('//text()', '<local:data xmlns:local="http://12...
                                  ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('//loc:piece/@id', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>', ARRAY[ARRAY['loc', 'http://127.0.0.1']]);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('//loc:piece/@id', '<local:data xmlns:local="ht...
                                         ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('//loc:piece', '<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>', ARRAY[ARRAY['loc', 'http://127.0.0.1']]);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('//loc:piece', '<local:data xmlns:local="http:/...
                                     ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('//loc:piece', '<local:data xmlns:local="http://127.0.0.1" xmlns="http://127.0.0.2"><local:piece id="1"><internal>number one</internal><internal2/></local:piece><local:piece id="2" /></local:data>', ARRAY[ARRAY['loc', 'http://127.0.0.1']]);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('//loc:piece', '<local:data xmlns:local="http:/...
                                     ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('//b', '<a>one <b>two</b> three <b>etc</b></a>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('//b', '<a>one <b>two</b> three <b>etc</b></a>'...
                             ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('//text()', '<root>&lt;</root>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('//text()', '<root>&lt;</root>');
                                  ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('//@value', '<root value="&lt;"/>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('//@value', '<root value="&lt;"/>');
                                  ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('''<<invalid>>''', '<root/>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('''<<invalid>>''', '<root/>');
                                         ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('count(//*)', '<root><sub/><sub/></root>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('count(//*)', '<root><sub/><sub/></root>');
                                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('count(//*)=0', '<root><sub/><sub/></root>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('count(//*)=0', '<root><sub/><sub/></root>');
                                      ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('count(//*)=3', '<root><sub/><sub/></root>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('count(//*)=3', '<root><sub/><sub/></root>');
                                      ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('name(/*)', '<root><sub/><sub/></root>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('name(/*)', '<root><sub/><sub/></root>');
                                  ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('/nosuchtag', '<root/>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('/nosuchtag', '<root/>');
                                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath('root', '<root/>');
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('root', '<root/>');
                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- Round-trip non-ASCII data through xpath().
 DO $$
 DECLARE
@@ -665,61 +557,51 @@ ERROR:  unsupported XML feature
 LINE 1: ...sts('//town[text() = ''Toronto'']' PASSING BY REF '<towns><t...
                                                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlexists('//town[text() = ''Cwmbran'']' PASSING BY REF '<towns><town>Bidford-on-Avon</town><town>Cwmbran</town><town>Bristol</town></towns>');
 ERROR:  unsupported XML feature
 LINE 1: ...sts('//town[text() = ''Cwmbran'']' PASSING BY REF '<towns><t...
                                                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlexists('count(/nosuchtag)' PASSING BY REF '<root/>');
 ERROR:  unsupported XML feature
 LINE 1: ...LECT xmlexists('count(/nosuchtag)' PASSING BY REF '<root/>')...
                                                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath_exists('//town[text() = ''Toronto'']','<towns><town>Bidford-on-Avon</town><town>Cwmbran</town><town>Bristol</town></towns>'::xml);
 ERROR:  unsupported XML feature
 LINE 1: ...ELECT xpath_exists('//town[text() = ''Toronto'']','<towns><t...
                                                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath_exists('//town[text() = ''Cwmbran'']','<towns><town>Bidford-on-Avon</town><town>Cwmbran</town><town>Bristol</town></towns>'::xml);
 ERROR:  unsupported XML feature
 LINE 1: ...ELECT xpath_exists('//town[text() = ''Cwmbran'']','<towns><t...
                                                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xpath_exists('count(/nosuchtag)', '<root/>'::xml);
 ERROR:  unsupported XML feature
 LINE 1: SELECT xpath_exists('count(/nosuchtag)', '<root/>'::xml);
                                                  ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest VALUES (4, '<menu><beers><name>Budvar</name><cost>free</cost><name>Carling</name><cost>lots</cost></beers></menu>'::xml);
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest VALUES (4, '<menu><beers><name>Budvar</n...
                                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest VALUES (5, '<menu><beers><name>Molson</name><cost>free</cost><name>Carling</name><cost>lots</cost></beers></menu>'::xml);
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest VALUES (5, '<menu><beers><name>Molson</n...
                                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest VALUES (6, '<myns:menu xmlns:myns="http://myns.com"><myns:beers><myns:name>Budvar</myns:name><myns:cost>free</myns:cost><myns:name>Carling</myns:name><myns:cost>lots</myns:cost></myns:beers></myns:menu>'::xml);
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest VALUES (6, '<myns:menu xmlns:myns="http:...
                                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest VALUES (7, '<myns:menu xmlns:myns="http://myns.com"><myns:beers><myns:name>Molson</myns:name><myns:cost>free</myns:cost><myns:name>Carling</myns:name><myns:cost>lots</myns:cost></myns:beers></myns:menu>'::xml);
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest VALUES (7, '<myns:menu xmlns:myns="http:...
                                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT COUNT(id) FROM xmltest WHERE xmlexists('/menu/beer' PASSING data);
  count 
 -------
@@ -792,81 +674,62 @@ SELECT COUNT(id) FROM xmltest, query WHERE xmlexists(expr PASSING BY REF data);
 SELECT xml_is_well_formed_document('<foo>bar</foo>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed_document('abc');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed_content('<foo>bar</foo>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed_content('abc');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SET xmloption TO DOCUMENT;
 SELECT xml_is_well_formed('abc');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<abc/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<foo>bar</foo>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<foo>bar</foo');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<foo><bar>baz</foo>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<local:data xmlns:local="http://127.0.0.1"><local:piece id="1">number one</local:piece><local:piece id="2" /></local:data>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<pg:foo xmlns:pg="http://postgresql.org/stuff">bar</my:foo>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<pg:foo xmlns:pg="http://postgresql.org/stuff">bar</pg:foo>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<invalidentity>&</abc>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<undefinedentity>&idontexist;</abc>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<invalidns xmlns=''&lt;''/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<relativens xmlns=''relative''/>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xml_is_well_formed('<twoerrors>&idontexist;</unbalanced>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SET xmloption TO CONTENT;
 SELECT xml_is_well_formed('abc');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- Since xpath() deals with namespaces, it's a bit stricter about
 -- what's well-formed and what's not. If we don't obey these rules
 -- (i.e. ignore namespace-related errors from libxml), xpath()
@@ -887,7 +750,6 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('/*', '<nosuchprefix:tag/>');
                            ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- XPath deprecates relative namespaces, but they're not supposed to
 -- throw an error, only a warning.
 SELECT xpath('/*', '<relativens xmlns=''relative''/>');
@@ -895,21 +757,17 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT xpath('/*', '<relativens xmlns=''relative''/>');
                            ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- External entity references should not leak filesystem information.
 SELECT XMLPARSE(DOCUMENT '<!DOCTYPE foo [<!ENTITY c SYSTEM "/etc/passwd">]><foo>&c;</foo>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT XMLPARSE(DOCUMENT '<!DOCTYPE foo [<!ENTITY c SYSTEM "/etc/no.such.file">]><foo>&c;</foo>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- This might or might not load the requested DTD, but it mustn't throw error.
 SELECT XMLPARSE(DOCUMENT '<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"><chapter>&nbsp;</chapter>');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- XMLPATH tests
 CREATE TABLE xmldata(data xml);
 INSERT INTO xmldata VALUES('<ROWS>
@@ -948,7 +806,6 @@ ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmldata VALUES('<ROWS>
                                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- XMLTABLE with columns
 SELECT  xmltable.*
    FROM (SELECT data FROM xmldata) x,
@@ -1025,7 +882,6 @@ ERROR:  unsupported XML feature
 LINE 3:                       PASSING '<rows xmlns="http://x.y"><row...
                                       ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 CREATE VIEW xmltableview2 AS SELECT * FROM XMLTABLE(XMLNAMESPACES('http://x.y' AS zz),
                       '/zz:rows/zz:row'
                       PASSING '<rows xmlns="http://x.y"><row><a>10</a></row></rows>'
@@ -1034,7 +890,6 @@ ERROR:  unsupported XML feature
 LINE 3:                       PASSING '<rows xmlns="http://x.y"><row...
                                       ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT * FROM xmltableview2;
 ERROR:  relation "xmltableview2" does not exist
 LINE 1: SELECT * FROM xmltableview2;
@@ -1047,7 +902,6 @@ ERROR:  unsupported XML feature
 LINE 3:                       PASSING '<rows xmlns="http://x.y"><row...
                                       ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT * FROM XMLTABLE('.'
                        PASSING '<foo/>'
                        COLUMNS a text PATH 'foo/namespace::node()');
@@ -1055,7 +909,6 @@ ERROR:  unsupported XML feature
 LINE 2:                        PASSING '<foo/>'
                                        ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- used in prepare statements
 PREPARE pp AS
 SELECT  xmltable.*
@@ -1115,33 +968,28 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT * FROM xmltable('/root' passing '<root><element>a1a<!...
                                                ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT * FROM xmltable('/root' passing '<root><element>a1a<!-- aaaa -->a2a<?aaaaa?> <!--z-->  bbbb<x>xxx</x>cccc</element></root>' COLUMNS element text PATH 'element/text()'); -- should fail
 ERROR:  unsupported XML feature
 LINE 1: SELECT * FROM xmltable('/root' passing '<root><element>a1a<!...
                                                ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- CDATA test
 select * from xmltable('d/r' passing '<d><r><c><![CDATA[<hello> &"<>!<a>foo</a>]]></c></r><r><c>2</c></r></d>' columns c text);
 ERROR:  unsupported XML feature
 LINE 1: select * from xmltable('d/r' passing '<d><r><c><![CDATA[<hel...
                                              ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- XML builtin entities
 SELECT * FROM xmltable('/x/a' PASSING '<x><a><ent>&apos;</ent></a><a><ent>&quot;</ent></a><a><ent>&amp;</ent></a><a><ent>&lt;</ent></a><a><ent>&gt;</ent></a></x>' COLUMNS ent text);
 ERROR:  unsupported XML feature
 LINE 1: SELECT * FROM xmltable('/x/a' PASSING '<x><a><ent>&apos;</en...
                                               ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT * FROM xmltable('/x/a' PASSING '<x><a><ent>&apos;</ent></a><a><ent>&quot;</ent></a><a><ent>&amp;</ent></a><a><ent>&lt;</ent></a><a><ent>&gt;</ent></a></x>' COLUMNS ent xml);
 ERROR:  unsupported XML feature
 LINE 1: SELECT * FROM xmltable('/x/a' PASSING '<x><a><ent>&apos;</en...
                                               ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 EXPLAIN (VERBOSE, COSTS OFF)
 SELECT  xmltable.*
    FROM (SELECT data FROM xmldata) x,
@@ -1208,7 +1056,6 @@ ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmldata VALUES('<ROWS>
                                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmldata VALUES('<ROWS>
 <ROW id="20">
   <COUNTRY_ID>EG</COUNTRY_ID>
@@ -1225,7 +1072,6 @@ ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmldata VALUES('<ROWS>
                                    ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT  xmltable.*
    FROM (SELECT data FROM xmldata) x,
         LATERAL XMLTABLE('/ROWS/ROW'
@@ -1327,7 +1173,6 @@ WITH
    EXCEPT SELECT * FROM x;
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- multi line xml test, result should be empty too
 WITH
    x AS (SELECT proname, proowner, procost::numeric, pronargs,
@@ -1352,32 +1197,27 @@ WITH
    EXCEPT SELECT * FROM x;
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 CREATE TABLE xmltest2(x xml, _path text);
 INSERT INTO xmltest2 VALUES('<d><r><ac>1</ac></r></d>', 'A');
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest2 VALUES('<d><r><ac>1</ac></r></d>', 'A')...
                                     ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest2 VALUES('<d><r><bc>2</bc></r></d>', 'B');
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest2 VALUES('<d><r><bc>2</bc></r></d>', 'B')...
                                     ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest2 VALUES('<d><r><cc>3</cc></r></d>', 'C');
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest2 VALUES('<d><r><cc>3</cc></r></d>', 'C')...
                                     ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 INSERT INTO xmltest2 VALUES('<d><r><dc>2</dc></r></d>', 'D');
 ERROR:  unsupported XML feature
 LINE 1: INSERT INTO xmltest2 VALUES('<d><r><dc>2</dc></r></d>', 'D')...
                                     ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmltable.* FROM xmltest2, LATERAL xmltable('/d/r' PASSING x COLUMNS a int PATH '' || lower(_path) || 'c');
  a 
 ---
@@ -1399,16 +1239,13 @@ ERROR:  unsupported XML feature
 LINE 1: SELECT * FROM XMLTABLE('*' PASSING '<a>a</a>' COLUMNS a xml ...
                                            ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 \x
 SELECT * FROM XMLTABLE('*' PASSING '<e>pre<!--c1--><?pi arg?><![CDATA[&ent1]]><n2>&amp;deep</n2>post</e>' COLUMNS x xml PATH 'node()', y xml PATH '/');
 ERROR:  unsupported XML feature
 LINE 1: SELECT * FROM XMLTABLE('*' PASSING '<e>pre<!--c1--><?pi arg?...
                                            ^
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 \x
 SELECT * FROM XMLTABLE('.' PASSING XMLELEMENT(NAME a) columns a varchar(20) PATH '"<foo/>"', b xml PATH '"<foo/>"');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.

src/test/regress/expected/xmlmap_1.out

@@ -14,109 +14,83 @@ INSERT INTO testxmlschema.test2 VALUES (55, 'abc', 'def',
 SELECT table_to_xml('testxmlschema.test1', false, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml('testxmlschema.test1', true, false, 'foo');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml('testxmlschema.test1', false, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml('testxmlschema.test1', true, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml('testxmlschema.test2', false, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xmlschema('testxmlschema.test1', false, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xmlschema('testxmlschema.test1', true, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xmlschema('testxmlschema.test1', false, true, 'foo');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xmlschema('testxmlschema.test1', true, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xmlschema('testxmlschema.test2', false, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml_and_xmlschema('testxmlschema.test1', false, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml_and_xmlschema('testxmlschema.test1', true, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml_and_xmlschema('testxmlschema.test1', false, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml_and_xmlschema('testxmlschema.test1', true, true, 'foo');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT query_to_xml('SELECT * FROM testxmlschema.test1', false, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT query_to_xmlschema('SELECT * FROM testxmlschema.test1', false, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT query_to_xml_and_xmlschema('SELECT * FROM testxmlschema.test1', true, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 DECLARE xc CURSOR WITH HOLD FOR SELECT * FROM testxmlschema.test1 ORDER BY 1, 2;
 SELECT cursor_to_xml('xc'::refcursor, 5, false, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT cursor_to_xmlschema('xc'::refcursor, false, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 MOVE BACKWARD ALL IN xc;
 SELECT cursor_to_xml('xc'::refcursor, 5, true, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT cursor_to_xmlschema('xc'::refcursor, true, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT schema_to_xml('testxmlschema', false, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT schema_to_xml('testxmlschema', true, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT schema_to_xmlschema('testxmlschema', false, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT schema_to_xmlschema('testxmlschema', true, false, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT schema_to_xml_and_xmlschema('testxmlschema', true, true, 'foo');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 -- test that domains are transformed like their base types
 CREATE DOMAIN testboolxmldomain AS bool;
 CREATE DOMAIN testdatexmldomain AS date;
@@ -128,8 +102,6 @@ CREATE TABLE testxmlschema.test3
 SELECT xmlforest(c1, c2, c3, c4) FROM testxmlschema.test3;
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT table_to_xml('testxmlschema.test3', true, true, '');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
-HINT:  You need to rebuild PostgreSQL using --with-libxml.