--- src/trsp/src/GraphDefinition.cpp.orig	2016-05-15 23:38:54 UTC
+++ src/trsp/src/GraphDefinition.cpp
@@ -26,7 +26,7 @@ Foundation, Inc., 51 Franklin Street, Fi
 #include <windows.h>
 #endif
 
-
+#include <cstdlib>
 #include <sstream>
 #include "GraphDefinition.h"