--- /dev/null
+--- OpenGTL-0.9.18/Extensions/PngDC/PngDC.cpp.orig 2012-12-29 12:27:12.000000000 +0100
++++ OpenGTL-0.9.18/Extensions/PngDC/PngDC.cpp 2013-11-10 20:16:18.369476336 +0100
+@@ -19,6 +19,7 @@
+
+ #include "PngDC.h"
+
++#include <cstring>
+ #include <png.h>
+
+ #include <config-endian.h>