CFLAGS: Add -D_FORTIFY_SOURCE=2 and -U_FORTIFY_SOURCE.
Signed-off-by: Philip Tricca <philip.b.tricca@intel.com>
diff --git a/configure.ac b/configure.ac
index 3d7fd28..c5a6d74 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,6 +34,20 @@
)]
)]
)
+dnl add_preproc_flag
+dnl
+dnl $1: Preprocessor flag to add to EXTRA_CFLAGS.
+dnl $2: Set to "required" t ocause configure failure if preprocesor flag
+dnl is not supported.
+AC_DEFUN([add_preproc_flag],[
+ AX_CHECK_PREPROC_FLAG([$1],[
+ EXTRA_CFLAGS="$EXTRA_CFLAGS $1"],[
+ AS_IF([test x$2 != xrequired],[
+ AC_MSG_WARN([Optional preprocessor flag "$1" not supported by your compiler, continuing.])],[
+ AC_MSG_ERROR([Required preprocessor flag "$1" not supported by your compiler, aborting.])]
+ )]
+ )]
+)
dnl add_ldlag:
dnl A macro to add a LDLAG to the EXTRA_LDFLAGS variable. This macro will
dnl check to be sure the linker supprts the flag. Flags can be made
@@ -57,6 +71,8 @@
add_cflag([-fstack-protector-all])
add_cflag([-fpic])
add_cflag([-fPIC])
+add_preproc_flag([-D_FORTIFY_SOURCE=2])
+add_preproc_flag([-U_FORTIFY_SOURCE])
add_ldflag([-Wl,--no-undefined])
add_ldflag([-Wl,-z,noexecstack])
add_ldflag([-Wl,-z,now])