Is there any example using an adjacency_list with hash_setS for EdgeList ? I think there is a mistake in adjacency_list.hpp:21: // ====================== #if !defined BOOST_NO_HASH #include // instead of ? #endif // ====================== I'm using gcc 4.0.2 with boost 1.33.0 and I can't compile a simple example using adjacency_list with hash_setS: // ====================== # if defined __cplusplus # if defined __GNUC__ && __GNUC__ >= 3 # include # include # if __GNUC__ >= 4 || __GNUC_MINOR__ >= 2 namespace std { using ::__gnu_cxx::hash; using ::__gnu_cxx::hash_set; using ::__gnu_cxx::hash_map; } # endif # else # include # include # endif /* defined __GNUC__ and __GNUC__ == 3 */ # endif /* defined __cplusplus */ #define BOOST_HAS_HASH 1 // for boost::hash_setS #include #include using namespace boost; int main() { typedef adjacency_list Graph; Graph g; } // ========================== -- Johan