diff -up devil-1.7.8/include/IL/il.h~ devil-1.7.8/include/IL/il.h
--- devil-1.7.8/include/IL/il.h~	2009-03-08 08:10:08.000000000 +0100
+++ devil-1.7.8/include/IL/il.h	2015-06-18 12:34:38.656310094 +0200
@@ -65,7 +65,7 @@ extern "C" {
 
 #ifdef RESTRICT_KEYWORD
 #define RESTRICT restrict
-#define CONST_RESTRICT const restrict
+#define CONST_RESTRICT const __restrict
 #else
 #define RESTRICT
 #define CONST_RESTRICT const