diff -r f025ab5e57ac -r 147497785496 src/basics.h
--- a/src/basics.h	Wed Nov 05 23:41:58 2014 +0200
+++ b/src/basics.h	Mon Dec 01 05:10:22 2014 +0200
@@ -23,6 +23,7 @@
 #include <QMetaType>
 #include <QVector3D>
 #include <QSharedPointer>
+#include <functional>
 #include "macros.h"
 
 class LDObject;