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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2018-11-19 12:01:47 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2018-11-19 12:01:47 -0500 |
| commit | 16fbac39ff68a737317f6fc7be78cc93a14856af (patch) | |
| tree | eeb453e1fffc7781e3a8442efd88c384f4a14b38 /aclocal.m4 | |
| parent | 5c9a5513a3967367e5fcc9237bc4146f4b24b408 (diff) | |
| download | postgresql-16fbac39ff68a737317f6fc7be78cc93a14856af.tar.gz | |
Fix configure's AC_CHECK_DECLS tests to work correctly with clang.
The test case that Autoconf uses to discover whether a function has
been declared doesn't work reliably with clang, because clang reports
a warning not an error if the name is a known built-in function.
On some platforms, this results in a lot of compile-time warnings about
strlcpy and related functions not having been declared.
There is a fix for this (by Noah Misch) in the upstream Autoconf sources,
but since they've not made a release in years and show no indication of
doing so anytime soon, let's just absorb their fix directly. We can
revert this when and if we update to a newer Autoconf release.
Back-patch to all supported branches.
Discussion: https://postgr.es/m/26819.1542515567@sss.pgh.pa.us
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index a517e949f1..bfd34ecec8 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -4,6 +4,7 @@ m4_include([config/ax_prog_perl_modules.m4]) m4_include([config/ax_pthread.m4]) m4_include([config/c-compiler.m4]) m4_include([config/c-library.m4]) +m4_include([config/check_decls.m4]) m4_include([config/docbook.m4]) m4_include([config/general.m4]) m4_include([config/libtool.m4]) |