From 6eb62b1e3056c84ca17290c7b160d9a4684b0bd6 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 24 Jan 2003 09:34:33 +0000
Subject: [PATCH] Added an #ifdef check around the glutSpecialUpFunc to help
 compile unde old version of GLUT.

---
 src/osgGLUT/Window.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/osgGLUT/Window.cpp b/src/osgGLUT/Window.cpp
index bd1f8c739..328b3a830 100644
--- a/src/osgGLUT/Window.cpp
+++ b/src/osgGLUT/Window.cpp
@@ -79,7 +79,9 @@ bool Window::open()
     glutPassiveMotionFunc( mousePassiveMotionCB );
 
     glutSpecialFunc( specialCB );
+#if (GLUT_API_VERSION >= 4 || GLUT_XLIB_IMPLEMENTATION >= 13)
     glutSpecialUpFunc( specialUpCB );
+#endif
     glutSpaceballMotionFunc( spaceballMotionCB );
     glutSpaceballRotateFunc( spaceballRotateCB );
     glutSpaceballButtonFunc( spaceballButtonCB );