Index: include/RangeMap.h
--- include/RangeMap.h.orig	1999-11-04 09:36:06.000000000 +0100
+++ include/RangeMap.h	2004-05-19 09:51:34.000000000 +0200
@@ -4,6 +4,7 @@
 #ifndef RangeMap_INCLUDED
 #define RangeMap_INCLUDED 1
 
+#include "constant.h"
 #include "Vector.h"
 #include "Boolean.h"
 #include "ISet.h"