-// The mac puts this in a weird location (GLUT/glut.h), so the
-// configure script detects the location and defines it as a macro.
#ifndef _MSC_VER // MSVC really needs a definition for wchar_t
#define _WCHAR_T_DEFINED 1 // Glut needs this, or else it tries to
// redefine it
#endif
+
#ifdef HAVE_CONFIG_H
# include <config.h>
-# include FG_GLUT_H
-#else
-# include <GL/glut.h>
#endif
+#include <simgear/compiler.h>
+
+#include SG_GLUT_H
+
#include <plib/pu.h>
#include "fg_props.hxx"