postgresql/config
Tom Lane 2082b3745a Extend configure's __int128 test to check for a known gcc bug.
On Sparc64, use of __attribute__(aligned(8)) with __int128 causes faulty
code generation in gcc versions at least through 5.5.0.  We can work around
that by disabling use of __int128, so teach configure to test for the bug.

This solution doesn't fix things for the case of cross-compiling with a
buggy compiler; to support that nicely, we'd need to add a manual disable
switch.  Unless more such cases turn up, it doesn't seem worth the work.
Affected users could always edit pg_config.h manually.

In passing, fix some typos in the existing configure test for __int128.
They're harmless because we only compile that code not run it, but
they're still confusing for anyone looking at it closely.

This is needed in support of commit 751804998, so back-patch to 9.5
as that was.

Marina Polyakova, Victor Wagner, Tom Lane

Discussion: https://postgr.es/m/0d3a9fa264cebe1cb9966f37b7c06e86@postgrespro.ru
2018-01-18 11:09:44 -05:00
..
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 Extend configure's __int128 test to check for a known gcc bug. 2018-01-18 11:09:44 -05:00
c-library.m4 Remove some configure header-file checks that we weren't really using. 2017-02-25 18:10:09 -05:00
config.guess Update config.guess and config.sub 2017-05-14 11:09:34 -04:00
config.sub Update config.guess and config.sub 2017-05-14 11:09:34 -04:00
docbook.m4 Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
general.m4 Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
install-sh Fix install-strip on Mac OS X 2012-08-21 23:42:43 -04:00
libtool.m4 Rename AC_PROG_LD* macros to PGAC_PROG_LD*. This avoids clashes with the 2004-07-17 18:53:56 +00:00
Makefile Install our "missing" script where PGXS builds can find it. 2015-12-11 16:15:05 -05:00
missing Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
perl.m4 MSVC: Test whether 32-bit Perl needs -D_USE_32BIT_TIME_T. 2017-12-08 18:06:05 -08:00
pkg.m4 ICU support 2017-03-23 15:28:48 -04:00
prep_buildtree find -path is not portable, so use grep -v instead. 2010-10-25 10:04:00 -03:00
programs.m4 Further improve consistency of configure's program searching. 2017-08-01 11:40:08 -04:00
python.m4 Further improve consistency of configure's program searching. 2017-08-01 11:40:08 -04:00
tcl.m4 Further improve consistency of configure's program searching. 2017-08-01 11:40:08 -04:00