diff --git a/include/boost/config/stdlib/libstdcpp3.hpp b/include/boost/config/stdlib/libstdcpp3.hpp
index 5cf5ef77..7bbe604f 100644
--- a/include/boost/config/stdlib/libstdcpp3.hpp
+++ b/include/boost/config/stdlib/libstdcpp3.hpp
@@ -62,3 +62,12 @@
 // support is useless.
 #  undef BOOST_HAS_LONG_LONG
 #endif
+
+#if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
+#  define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
+#  define BOOST_HAS_SLIST
+#  define BOOST_HAS_HASH
+#  define BOOST_SLIST_HEADER <ext/slist>
+#  define BOOST_HASH_SET_HEADER <ext/hash_set>
+#  define BOOST_HASH_MAP_HEADER <ext/hash_map>
+#endif