--- a/configure.in	Fri Jun 15 11:43:14 2007 +0000
+++ b/configure.in	Fri Jun 15 12:26:29 2007 +0000
@@ -1550,6 +1550,7 @@
         AC_TRY_COMPILE([
          #include <GL/gl.h>
          #include <GL/glx.h>
+         #include <GL/glu.h>
         ],[
         ],[
         video_opengl=yes