ovs-atomic: Add native Clang implementation.

[sliver-openvswitch.git] / lib / compiler.h

diff --git a/lib/compiler.h b/lib/compiler.h
index fb4d46c..ccc949b 100644 (file)
--- a/lib/compiler.h
+++ b/lib/compiler.h
@@ -20,6 +20,9 @@
 #ifndef __has_feature
   #define __has_feature(x) 0
 #endif
+#ifndef __has_extension
+  #define __has_extension(x) 0
+#endif
 
 #if __GNUC__ && !__CHECKER__
 #define NO_RETURN __attribute__((__noreturn__))