diff -up VirtualGL-2.3.1/util/glreadtest.cpp.glx VirtualGL-2.3.1/util/glreadtest.cpp --- VirtualGL-2.3.1/util/glreadtest.cpp.glx 2011-12-22 11:27:13.000000000 -0700 +++ VirtualGL-2.3.1/util/glreadtest.cpp 2012-07-10 11:19:56.904891622 -0600 @@ -23,7 +23,7 @@ #include "rrerror.h" #include <errno.h> #define GL_GLEXT_PROTOTYPES -#include "../common/glx.h" +#include <GL/glx.h> #ifdef MESAGLU #include <mesa/glu.h> #else