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-rw-r--r--examples/demo_utils.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/examples/demo_utils.h b/examples/demo_utils.h
index 94be68e..9a1cb7a 100644
--- a/examples/demo_utils.h
+++ b/examples/demo_utils.h
@@ -14,6 +14,9 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#ifndef PUGL_DEMO_UTILS_H
+#define PUGL_DEMO_UTILS_H
+
#include "pugl/pugl.h"
#include <math.h>
@@ -168,3 +171,5 @@ puglPrintFps(const PuglWorld* world,
*framesDrawn = 0;
}
}
+
+#endif // PUGL_DEMO_UTILS_H