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-rw-r--r--examples/OpenGL3-glut-test.cxx1
1 files changed, 1 insertions, 0 deletions
diff --git a/examples/OpenGL3-glut-test.cxx b/examples/OpenGL3-glut-test.cxx
index f455eaf56..8fb0d06e9 100644
--- a/examples/OpenGL3-glut-test.cxx
+++ b/examples/OpenGL3-glut-test.cxx
@@ -1,5 +1,6 @@
#include <stdio.h>
#if defined(__APPLE__)
+# define GL_DO_NOT_WARN_IF_MULTI_GL_VERSION_HEADERS_INCLUDED 1
# include <OpenGL/gl3.h> // defines OpenGL 3.0+ functions
#else
# if defined(WIN32)