From 3ecd1a41be7c880976987d13e88342c98f37e064 Mon Sep 17 00:00:00 2001 From: NIIBE Yutaka Date: Mon, 20 Nov 2017 12:01:31 +0900 Subject: [PATCH] build: Check -Wlogical-op flag availability with -Werror. * configure.ac: Use -Werror. -- Using clang, -Wlogical-op doesn't fail but generates warning. Signed-off-by: NIIBE Yutaka --- configure.ac | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/configure.ac b/configure.ac index 42c069863..3d3a136b4 100644 --- a/configure.ac +++ b/configure.ac @@ -1612,12 +1612,20 @@ if test "$GCC" = yes; then mycflags="$mycflags -Wdeclaration-after-statement" fi - AC_MSG_CHECKING([if gcc supports -Wlogical-op and -Wvla]) - CFLAGS="-Wlogical-op -Wvla" + AC_MSG_CHECKING([if gcc supports -Wlogical-op]) + CFLAGS="-Wlogical-op -Werror" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],_gcc_wopt=yes,_gcc_wopt=no) AC_MSG_RESULT($_gcc_wopt) if test x"$_gcc_wopt" = xyes ; then - mycflags="$mycflags -Wlogical-op -Wvla" + mycflags="$mycflags -Wlogical-op -Werror" + fi + + AC_MSG_CHECKING([if gcc supports -Wvla]) + CFLAGS="-Wvla" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],_gcc_wopt=yes,_gcc_wopt=no) + AC_MSG_RESULT($_gcc_wopt) + if test x"$_gcc_wopt" = xyes ; then + mycflags="$mycflags -Wvla" fi else