--- include/boost/polygon/polygon.hpp.orig	2011-07-12 19:16:41.000000000 +0200
+++ include/boost/polygon/polygon.hpp	2012-01-25 19:34:06.000000000 +0100
@@ -24,6 +24,8 @@
 #include "transform.hpp"
 #include "detail/transform_detail.hpp"
 
+#include "detail/polygon_sort_adaptor.hpp"
+
 //interval
 #include "interval_data.hpp"
 #include "interval_traits.hpp"