diff options
| -rw-r--r-- | m4/compiler_warnings.m4 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/m4/compiler_warnings.m4 b/m4/compiler_warnings.m4 index c05a26d098..412acb9750 100644 --- a/m4/compiler_warnings.m4 +++ b/m4/compiler_warnings.m4 @@ -30,7 +30,8 @@ if test "$GCC" = "yes" -a "$set_more_warnings" != "no"; then -Wundef -Wimplicit-function-declaration \ -Wpointer-arith -Winit-self \ -Wmissing-include-dirs; do - CFLAGS="$CFLAGS_MORE_WARNINGS $CFLAGS_EXTRA $option $CFLAGS_SAVED" + dnl GCC 4.4 does not warn when checking for -Wno-* flags (https://gcc.gnu.org/wiki/FAQ#wnowarning) + CFLAGS="$CFLAGS_MORE_WARNINGS $CFLAGS_EXTRA $(printf '%s' "$option" | sed 's/^-Wno-/-W/') $CFLAGS_SAVED" AC_MSG_CHECKING([whether gcc understands $option]) AC_TRY_COMPILE([], [], has_option=yes, |