From 1866d335387eb4657bb323e3b4b2c74f92d65be8 Mon Sep 17 00:00:00 2001
From: Martin Willi <martin@revosec.ch>
Date: Wed, 15 Apr 2015 14:20:52 +0200
Subject: [PATCH] utils: Support __has_feature() macro on non-LLVM compilers by
 returning 0

---
 src/libstrongswan/utils/utils.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/libstrongswan/utils/utils.h b/src/libstrongswan/utils/utils.h
index c7ccd3afa..120b15950 100644
--- a/src/libstrongswan/utils/utils.h
+++ b/src/libstrongswan/utils/utils.h
@@ -112,6 +112,13 @@ void utils_deinit();
 #define BUILD_ASSERT_ARRAY(a) \
 		BUILD_ASSERT(!__builtin_types_compatible_p(typeof(a), typeof(&(a)[0])))
 
+/**
+ * LLVM/Clang __has_feature support
+ */
+#ifndef __has_feature
+# define __has_feature(x) 0
+#endif
+
 /**
  * Debug macro to follow control flow
  */