+dnl check for glut location
+AC_CHECK_HEADER(GL/glut.h)
+if test "x$ac_cv_header_GL_glut_h" = "xyes"; then
+ AC_DEFINE([GLUT_H], "GL/glut.h", [Define as glut.h include location])
+else
+ AC_CHECK_HEADER(GLUT/glut.h)
+ if test "x$ac_cv_header_GLUT_glut_h" = "xyes"; then
+ AC_DEFINE([GLUT_H], "GLUT/glut.h", [Define as glut.h include location])
+ else
+ echo "Neither GL/glut.h nor GLUT/glut.h found. Cannot continue"
+ exit
+ fi
+fi
+