diff --git a/Demos/OpenGL/DebugCastResult.h b/Demos/OpenGL/DebugCastResult.h
index 17bc19f13..a21d2bb24 100644
--- a/Demos/OpenGL/DebugCastResult.h
+++ b/Demos/OpenGL/DebugCastResult.h
@@ -22,7 +22,13 @@ subject to the following restrictions:
 #ifdef WIN32
 #include <windows.h>
 #endif
+//think different
+#if defined(__APPLE__) && !defined (VMDMESA)
+#include <OpenGL/gl.h>
+#include <OpenGL/glu.h>
+#else
 #include <GL/gl.h>
+#endif
 struct DebugCastResult : public ConvexCast::CastResult
 {
 
diff --git a/Extras/LibXML/config.h b/Extras/LibXML/config.h
index 2febfcde3..fb5761d31 100644
--- a/Extras/LibXML/config.h
+++ b/Extras/LibXML/config.h
@@ -18,7 +18,7 @@
 #define HAVE_GETADDRINFO 
 
 /* Define to 1 if you have the <ansidecl.h> header file. */
-#define HAVE_ANSIDECL_H 1
+//#define HAVE_ANSIDECL_H 1
 
 /* Define to 1 if you have the <arpa/inet.h> header file. */
 #define HAVE_ARPA_INET_H 1