Index: java3d-1.5.2/j3d-core/src/native/ogl/gldefs.h
===================================================================
--- java3d-1.5.2.orig/j3d-core/src/native/ogl/gldefs.h
+++ java3d-1.5.2/j3d-core/src/native/ogl/gldefs.h
@@ -66,11 +66,16 @@
 #include <X11/Xutil.h>
 
 #include <GL/gl.h>
+#ifndef GL_VERSION_1_5
+#define GL_VERSION_1_5
+typedef ptrdiff_t GLsizeiptr;
+typedef ptrdiff_t GLintptr;
+#endif
 #include <GL/glx.h>
 #ifdef Java3D_undef__glext_h_
 #undef __glext_h_
 #endif
-#include "glext.h"
+#include <GL/glext.h>
 #endif
 
 #ifdef WIN32