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authorMike Gilbert <floppym@gentoo.org>2024-11-04 14:13:22 -0500
committerMike Gilbert <floppym@gentoo.org>2024-11-04 14:13:22 -0500
commitda56efba489456c5b9374c76b5f74b60f8eb9891 (patch)
treee5e63bc2f0f8552174b2b4a22cc67285e900c9a5
parentFix behavior of utimensat(..., AT_EMPTY_PATH) (diff)
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Update ax_check_compile_flag.m4
Signed-off-by: Mike Gilbert <floppym@gentoo.org>
-rw-r--r--m4/ax_check_compile_flag.m416
1 files changed, 13 insertions, 3 deletions
diff --git a/m4/ax_check_compile_flag.m4 b/m4/ax_check_compile_flag.m4
index bd753b3..54191c5 100644
--- a/m4/ax_check_compile_flag.m4
+++ b/m4/ax_check_compile_flag.m4
@@ -34,14 +34,24 @@
# and this notice are preserved. This file is offered as-is, without any
# warranty.
-#serial 6
+#serial 11
AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
-AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
+AC_CACHE_CHECK([whether the _AC_LANG compiler accepts $1], CACHEVAR, [
ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
- _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
+ if test x"m4_case(_AC_LANG,
+ [C], [$GCC],
+ [C++], [$GXX],
+ [Fortran], [$GFC],
+ [Fortran 77], [$G77],
+ [Objective C], [$GOBJC],
+ [Objective C++], [$GOBJCXX],
+ [no])" = xyes ; then
+ add_gnu_werror="-Werror"
+ fi
+ _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1 $add_gnu_werror"
AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
[AS_VAR_SET(CACHEVAR,[yes])],
[AS_VAR_SET(CACHEVAR,[no])])