Add FORTIFY_SOURCE support

Adds a check for the minimum mainline GCC version for FORTIFY_SOURCE
support and enables -D_FORTIFY_SOURCE=2 by default when building with
--enable-debug.

Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index b4570f58..76e36c8b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -316,6 +316,7 @@ if test "x$debug" = "xyes" ; then
 	# Check for -fstack-protector availability
 	GCC_STACK_PROTECT_LIB
 	GCC_STACK_PROTECT_CC
+	GCC_FORTIFY_SOURCE_CC
 	CFLAGS="$CFLAGS -g -Wall -Werror"
 else
 	AC_MSG_RESULT(no)