| From 5bbe8b009d6daa809f679fd1d25c270abba468b4 Mon Sep 17 00:00:00 2001 |
| From: Robbie Harwood <rharwood@redhat.com> |
| Date: Wed, 31 Jan 2018 17:52:39 +0100 |
| Subject: [PATCH] Verify flags prior to adding them to CFLAGS, not after |
| |
| --- |
| configure.ac | 5 ++++- |
| 1 file changed, 4 insertions(+), 1 deletion(-) |
| |
| diff --git a/configure.ac b/configure.ac |
| index b7b5908..4084965 100644 |
| --- a/configure.ac |
| +++ b/configure.ac |
| @@ -8,8 +8,11 @@ m4_ifdef([AC_USE_SYSTEM_EXTENSIONS], |
| [AC_GNU_SOURCE]) |
| |
| AC_PROG_CC_C99 |
| + |
| for flag in -Wall -Wextra; do |
| - AC_TRY_COMPILE([], [return 0;], [CFLAGS="$CFLAGS $flag"],) |
| + OLD_CFLAGS=$CFLAGS |
| + CFLAGS="$CFLAGS $flag" |
| + AC_TRY_COMPILE(, [return 0;], [], [CFLAGS=$OLD_CFLAGS]) |
| done |
| |
| AC_CANONICAL_SYSTEM |
