diff -dur orig/boost/config/platform/bsd.hpp patched/boost/config/platform/bsd.hpp
--- orig/boost/config/platform/bsd.hpp	2009-01-10 12:18:42.000000000 +0100
+++ patched/boost/config/platform/bsd.hpp	2010-08-04 21:47:39.953125000 +0200
@@ -56,7 +56,7 @@
 #endif
 
 #if !((defined(__FreeBSD__) && (__FreeBSD__ >= 5)) \
-      || (__NetBSD_GCC__ >= 2095003) || defined(__DragonFly__))
+      || (defined(__NetBSD_GCC__) && __NetBSD_GCC__ >= 2095003) || defined(__DragonFly__))
 #  define BOOST_NO_CWCHAR
 #endif
 //