From e84e941746e1baec13b4bcde981caebccb64e3f6 Mon Sep 17 00:00:00 2001
From: netblue30 <netblue30@yahoo.com>
Date: Fri, 30 Mar 2018 08:34:49 -0400
Subject: spectre clang support

---
 configure.ac | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 1f573d50f..d3405a135 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,13 +14,17 @@ AS_IF([test "$CC" = "gcc"], [
 	HAVE_SPECTRE="yes"
 	$CC -mindirect-branch=thunk -c dummy.c || HAVE_SPECTRE="no"
 	rm -f dummy.o
-	EXTRA_CFLAGS+=" -mindirect-branch=thunk "
+	AS_IF([test "$HAVE_SPECTRE" = "yes"], [
+		EXTRA_CFLAGS+=" -mindirect-branch=thunk "
+	])
 ])
 AS_IF([test "$CC" = "clang"], [
 	HAVE_SPECTRE="yes"
 	$CC -mretpoline -c dummy.c || HAVE_SPECTRE="no"
 	rm -f dummy.o
-	EXTRA_CFLAGS+=" -mretpoline "
+	AS_IF([test "$HAVE_SPECTRE" = "yes"], [
+		EXTRA_CFLAGS+=" -mretpoline "
+	])
 ])
 AS_IF([test "$HAVE_SPECTRE" = "yes"], [
 	AC_MSG_RESULT(yes)
-- 
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