From 582ef0444a7687b9d8b08b484d8584f5b35618e5 Mon Sep 17 00:00:00 2001
From: Eugene Crosser <crosser@average.org>
Date: Mon, 26 Dec 2022 22:59:12 +0100
Subject: [PATCH] autoconf: add hardening for clang

---
 configure.ac | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 987690c..5e02971 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,8 +10,10 @@ AC_PROG_CC
 
 if test "X$CC" = "Xgcc"; then
   CFLAGS="$CFLAGS -Wall -fstack-protector-all -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3"
-fi
 dnl make CFLAGS="-fsanitize=address -fno-omit-frame-pointer -g" LDFLAGS="-static-libasan"
+else if test "X$CC" = "Xclang"; then
+  CFLAGS="$CFLAGS -Wall -Wformat -Wformat-security -Werror=format-security -fstack-protector-all -fsanitize=safe-stack -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2"
+fi; fi
 
 AC_PROG_MAKE_SET
 AC_SUBST(PROGS)dnl
-- 
2.39.2