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-rw-r--r--src/redbook/cubemap.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/redbook/cubemap.c b/src/redbook/cubemap.c
index 92026c70..e82cec64 100644
--- a/src/redbook/cubemap.c
+++ b/src/redbook/cubemap.c
@@ -50,6 +50,7 @@
* forward and backward.
*/
+#include <GL/glew.h>
#include <GL/glut.h>
#include <stdlib.h>
#include <stdio.h>