Hello, I tried building my Ledger project today with Boost 1.51 and clang --std=c++11, and received the following error: --8<---------------cut here---------------start------------->8--- /usr/local/include/boost-1_51/boost/mpl/eval_if.hpp:38:26: error: no type named 'type' in 'boost::no_property' typedef typename f_::type type; ~~~~~~~~~~~~~^~~~ [...] /Users/johnw/Projects/ledger/src/history.cc:455:3: note: in instantiation of function template specialization 'boost::dijkstra_shortest_paths<boost::filtered_graph<boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, boost::property<boost::vertex_name_t, const ledger::commodity_t *, boost::property<boost::vertex_index_t, unsigned long, boost::no_property> >, boost::property<boost::edge_weight_t, long, boost::property<boost::edge_price_ratio_t, std::__1::map<boost::posix_time::ptime, ledger::amount_t, std::__1::less<boost::posix_time::ptime>, std::__1::allocator<std::__1::pair<const boost::posix_time::ptime, ledger::amount_t> > >, boost::property<boost::edge_price_point_t, ledger::price_point_t, boost::no_property> > >, boost::property<boost::graph_name_t, std::__1::basic_string<char>, boost::no_property>, boost::listS>, ledger::recent_edge_weight<boost::adj_list_edge_property_map<boost::undirected_tag, long, long &, unsigned long, boost::property<boost::edge_weight_t, long, boost::property<boost::edge_price_ratio_t, std::__1::map<boost::posix_time::ptime, ledger::amount_t, std::__1::less<boost::posix_time::ptime>, std::__1::allocator<std::__1::pair<const boost::posix_time::ptime, ledger::amount_t> > >, boost::property<boost::edge_price_point_t, ledger::price_point_t, boost::no_property> > >, boost::edge_weight_t>, boost::adj_list_edge_property_map<boost::undirected_tag, ledger::price_point_t, ledger::price_point_t &, unsigned long, boost::property<boost::edge_weight_t, long, boost::property<boost::edge_price_ratio_t, std::__1::map<boost::posix_time::ptime, ledger::amount_t, std::__1::less<boost::posix_time::ptime>, std::__1::allocator<std::__1::pair<const boost::posix_time::ptime, ledger::amount_t> > >, boost::property<boost::edge_price_point_t, ledger::price_point_t, boost::no_property> > >, boost::edge_price_point_t>, boost::adj_list_edge_property_map<boost::undirected_tag, std::__1::map<boost::posix_time::ptime, ledger::amount_t, std::__1::less<boost::posix_time::ptime>, std::__1::allocator<std::__1::pair<const boost::posix_time::ptime, ledger::amount_t> > >, std::__1::map<boost::posix_time::ptime, ledger::amount_t, std::__1::less<boost::posix_time::ptime>, std::__1::allocator<std::__1::pair<const boost::posix_time::ptime, ledger::amount_t> > > &, unsigned long, boost::property<boost::edge_weight_t, long, boost::property<boost::edge_price_ratio_t, std::__1::map<boost::posix_time::ptime, ledger::amount_t, std::__1::less<boost::posix_time::ptime>, std::__1::allocator<std::__1::pair<const boost::posix_time::ptime, ledger::amount_t> > >, boost::property<boost::edge_price_point_t, ledger::price_point_t, boost::no_property> > >, boost::edge_price_ratio_t> >, boost::keep_all>, f_max<long>, boost::distance_combine_t, boost::bgl_named_params<boost::iterator_property_map<long *, boost::vec_adj_list_vertex_id_map<boost::property<boost::vertex_name_t, const ledger::commodity_t *, boost::property<boost::vertex_index_t, unsigned long, boost::no_property> >, unsigned long>, long, long &>, boost::vertex_distance_t, boost::bgl_named_params<boost::iterator_property_map<unsigned long *, boost::vec_adj_list_vertex_id_map<boost::property<boost::vertex_name_t, const ledger::commodity_t *, boost::property<boost::vertex_index_t, unsigned long, boost::no_property> >, unsigned long>, unsigned long, unsigned long &>, boost::vertex_predecessor_t, boost::no_property> > >' requested here dijkstra_shortest_paths(fg, /* start= */ vs, ^ --8<---------------cut here---------------end--------------->8--- My graph type is: typedef adjacency_list <vecS, // Store all edges in a vector vecS, // Store all vertices in a vector undirectedS, // Relations are both ways // All vertices are commodities property<vertex_name_t, const commodity_t *, property<vertex_index_t, std::size_t> >, // All edges are weights computed as the absolute difference between // the reference time of a search and a known price point. A // filtered_graph is used to select the recent price point to the // reference time before performing the search. property<edge_weight_t, long, property<edge_price_ratio_t, price_map_t, property<edge_price_point_t, price_point_t> > >, // Graph itself has a std::string name property<graph_name_t, std::string> > Graph; The full source is located here: https://github.com/jwiegley/ledger/blob/next/src/history.cc What has changed in Boost.Graph since 1.50? The same code builds fine with all the same compiler options using that version. Thanks, -- John Wiegley BoostPro Computing Software Development Training http://www.boostpro.com Clang/LLVM/EDG Compilers C++ Boost