1 files changed, 3 insertions, 0 deletions
diff --git a/src/lib/rect.h b/src/lib/rect.h
index 4851ad007..07fb22dc9 100644
--- a/src/lib/rect.h
+++ b/src/lib/rect.h
@@ -24,6 +24,7 @@
 #include "position.h"
 #include <boost/optional.hpp>
 #include <algorithm>
+#include <cmath>
 
 /* Put this inside a namespace as Apple put a Rect in the global namespace */
 
@@ -114,6 +115,8 @@ public:
 	}
 };
 
+extern bool operator== (Rect<double> const & a, Rect<double> const & b);
+
 }
 
 #endif