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-rw-r--r--src/glut/glx/glutint.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/glut/glx/glutint.h b/src/glut/glx/glutint.h
index 7849a01acd..71dceeceee 100644
--- a/src/glut/glx/glutint.h
+++ b/src/glut/glx/glutint.h
@@ -30,7 +30,9 @@
#ifndef _WIN32
/* added by BrianP: */
+#ifndef APIENTRY
#define APIENTRY GLAPIENTRY
+#endif
#define __cdecl GLAPIENTRY
#define CDECL GLAPIENTRY
#endif