From 3460e4fcaff06c6d158e272c9728dd1f460300b5 Mon Sep 17 00:00:00 2001
From: "Charles J. Cliffe" <cj@cubicproductions.com>
Date: Tue, 15 Mar 2016 21:19:29 -0400
Subject: [PATCH] Fix linux build

---
 src/util/GLFont.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/util/GLFont.h b/src/util/GLFont.h
index 86fc1c4..4024a00 100644
--- a/src/util/GLFont.h
+++ b/src/util/GLFont.h
@@ -3,6 +3,7 @@
 #include <map>
 #include <string>
 #include <sstream>
+#include <mutex>
 #include "lodepng.h"
 #include "wx/glcanvas.h"
 #include "wx/filename.h"