*/
/* required include files */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
#include <GL/gl.h>
#include <GL/glut.h>
+#ifdef HAVE_GLE3
+#include <GL/gle.h>
+#else
#include <GL/tube.h>
+#endif
/* most recent mouse postion */
extern float lastx;