Commit 990c91f2 authored by Michael Natterer's avatar Michael Natterer

m4macros: make detectcflags.m4 more reliable

GIMP_DETECT_CFLAGS: pass -Werror to the compiler when checking for
flags, so the macro fails if passing a flag only warns but doesn't
cause the compiler to fail. Before, the compiler would warn about the
flag for each file compiled.
parent 3f2efc57
......@@ -7,7 +7,7 @@ AC_DEFUN([GIMP_DETECT_CFLAGS],
for flag in $2; do
if test -z "[$]$1"; then
$1_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $flag"
CFLAGS="$CFLAGS -Werror $flag"
AC_MSG_CHECKING([whether [$]CC understands [$]flag])
AC_TRY_COMPILE([], [], [$1_works=yes], [$1_works=no])
AC_MSG_RESULT([$]$1_works)
......
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