--- boost/detail/atomic_count_gcc.hpp.orig	2007-11-23 17:03:14.000000000 +0000
+++ boost/detail/atomic_count_gcc.hpp	2009-04-27 15:34:33.657743851 +0000
@@ -17,7 +17,11 @@
 //  http://www.boost.org/LICENSE_1_0.txt)
 //
 
+#if defined(__GNUC__) && (__GNUC__ >= 4 && __GNUC_MINOR__ >= 2)
+#include <ext/atomicity.h>
+#else
 #include <bits/atomicity.h>
+#endif
 
 namespace boost
 {