diff --git a/hsjscore.h b/hsjscore.h
--- a/hsjscore.h
+++ b/hsjscore.h
@@ -28,6 +28,27 @@
 #undef __clang__
 #endif
 
+#ifndef __has_builtin
+#undef __has_builtin
+#endif
+#define __has_builtin(x) 0
+#ifndef __has_include
+#undef __has_include
+#endif
+#define __has_include(x) 0
+#ifndef __has_feature
+#undef __has_feature
+#endif
+#define __has_feature(x) 0
+#ifndef __has_attribute
+#undef __has_attribute
+#endif
+#define __has_attribute(x) 0
+#ifndef __has_extension
+#undef __has_extension
+#endif
+#define __has_extension(x) 0
+
 #ifndef JSC_API_AVAILABLE
 #define JSC_API_AVAILABLE(...)
 #endif
diff --git a/webkit2gtk3-javascriptcore.cabal b/webkit2gtk3-javascriptcore.cabal
--- a/webkit2gtk3-javascriptcore.cabal
+++ b/webkit2gtk3-javascriptcore.cabal
@@ -1,5 +1,5 @@
 Name:           webkit2gtk3-javascriptcore
-Version:        0.14.4.2
+Version:        0.14.4.3
 Synopsis:       JavaScriptCore FFI from webkitgtk
 Description:    FFI for JavaScriptCore module from webkitgtk
 License:        BSD3