--- a/mercurial/util.h	Fri Jun 13 15:59:18 2014 -0700
+++ b/mercurial/util.h	Thu Jul 03 19:05:04 2014 +0200
@@ -159,7 +159,7 @@
 	int mtime;
 } dirstateTupleObject;
 
-PyTypeObject dirstateTupleType;
+extern PyTypeObject dirstateTupleType;
 #define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)
 
 static inline uint32_t getbe32(const char *c)