$OpenBSD: patch-boost_archive_iterators_remove_whitespace_hpp,v 1.2 2011/11/02 11:54:15 jasper Exp $
--- boost/archive/iterators/remove_whitespace.hpp.orig	Sun Dec 20 14:40:29 2009
+++ boost/archive/iterators/remove_whitespace.hpp	Sun Dec 20 19:07:34 2009
@@ -16,6 +16,7 @@
 
 //  See http://www.boost.org for updates, documentation, and revision history.
 
+#include <cwctype>
 #include <cassert>
 
 #include <boost/config.hpp> // for BOOST_DEDUCED_TYPENAME
