database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-28 23:42:10 +03:00
Code Activity

Require C99 (and thus MSCV 2013 upwards).

Browse Source 
In 86d78ef50e I enabled configure to check for C99 support, with the
goal of checking which platforms support C99.  While there are a few
machines without C99 support among our buildfarm animals,
de-supporting them for v12 was deemed acceptable.

While not tested in aforementioned commit, the biggest increase in
minimum compiler version comes from MSVC, which gained C99 support
fairly late. The subset in MSVC 2013 is sufficient for our needs, at
this point. While that is a significant increase in minimum version,
the existing windows binaries are already built with a new enough
version.

Make configure error out if C99 support could not be detected. For
MSVC builds, increase the minimum version to 2013.

The increase to MSVC 2013 allows us to get rid of VCBuildProject.pm,
as that was only required for MSVC 2005/2008.

Author: Andres Freund
Discussion: https://postgr.es/m/97d4b165-192d-3605-749c-f614a0c4e783@2ndquadrant.com
This commit is contained in:
Andres Freund
2018-08-23 18:33:40 -07:00
parent a569eea699
commit d9dd406fe2
11 changed files with 112 additions and 558 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
configure vendored
View File

@ -4602,6 +4602,13 @@ if test "x$ac_cv_prog_cc_c99" != xno; then :
fi
# Error out if the compiler does not support C99, as the codebase
# relies on that.
if test "$ac_cv_prog_cc_c99" = no; then
as_fn_error $? "C compiler \"$CC\" does not support C99" "$LINENO" 5
fi
ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@ -5361,6 +5368,48 @@ fi
# -Wdeclaration-after-statement isn't applicable for C++
# Really don't want VLAs to be used in our dialect of C
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} supports -Werror=vla, for CFLAGS" >&5
$as_echo_n "checking whether ${CC} supports -Werror=vla, for CFLAGS... " >&6; }
if ${pgac_cv_prog_CC_cflags__Werror_vla+:} false; then :
$as_echo_n "(cached) " >&6
else
pgac_save_CFLAGS=$CFLAGS
pgac_save_CC=$CC
CC=${CC}
CFLAGS="${CFLAGS} -Werror=vla"
ac_save_c_werror_flag=$ac_c_werror_flag
ac_c_werror_flag=yes
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
int
main ()
{
;
return 0;
}
_ACEOF
if ac_fn_c_try_compile "$LINENO"; then :
pgac_cv_prog_CC_cflags__Werror_vla=yes
else
pgac_cv_prog_CC_cflags__Werror_vla=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
ac_c_werror_flag=$ac_save_c_werror_flag
CFLAGS="$pgac_save_CFLAGS"
CC="$pgac_save_CC"
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_prog_CC_cflags__Werror_vla" >&5
$as_echo "$pgac_cv_prog_CC_cflags__Werror_vla" >&6; }
if test x"$pgac_cv_prog_CC_cflags__Werror_vla" = x"yes"; then
CFLAGS="${CFLAGS} -Werror=vla"
fi
# -Wvla is not applicable for C++
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${CC} supports -Wendif-labels, for CFLAGS" >&5
$as_echo_n "checking whether ${CC} supports -Wendif-labels, for CFLAGS... " >&6; }