October 2005 - Boost-users - lists.preview.boost.org

newbie question: Boost graph library and GraphViz
by John Pye 03 Oct '05

03 Oct '05

Hi there, I've been working on using Boost Graph Library for the last few days and I've got to the point where I can't go further without some help. What I've got is an algorithm that I've implemented that works fine except for the part that involves 'remove_vertex'. Using this function wrecks my graph, for reasons that I understand (Iterator and Descriptor Stability/Invalidation, at http://www.boost.org/libs/graph/doc/adjacency_list.html) So, following the advice there, I switched from a vecS graph to a listS graph, with the following typedef: * *typedef boost::adjacency_list<boost::listS, boost::listS, boost::bidirectionalS, VertexData, EdgeData> Graph; When I do that, my algorithm seems to work OK but I can no longer view the results using the write_graphviz function -- I get a string of errors about some problem with the operator<< inside graphviz.hpp header. I'll paste in the errors at the end. The only thing I can see being the problem is that I'm using an AdjacencyGraph, and that doesn't include the VertexListGraph concept, which presumably is required for write_graphviz. How can I make write_graphviz run again with this new type of Graph? Happy to give some more info/code if that helps. Any suggestions would be very much appreciated! Cheers JP Here are the error messages: > g++ -O3 -Wall -ggdb -I../nnes -c -o westerberg.o westerberg.cpp > /usr/include/boost/graph/graphviz.hpp: In function `void > boost::write_graphviz(std::ostream&, const Graph&, > VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter) > [with Graph = boost::adjacency_list<boost::listS, boost::listS, > boost::bidirectionalS, Westerberg::VertexData, Westerberg::EdgeData, > boost::no_property, boost::listS>, VertexPropertiesWriter = > WesterbergPropertiesWriter, EdgePropertiesWriter = > WesterbergPropertiesWriter, GraphPropertiesWriter = > WesterbergPropertiesWriter]': westerberg.cpp:118: instantiated from > here /usr/include/boost/graph/graphviz.hpp:263: error: no match for > 'operator<<' in 'out << boost::get [with PropertyMap = > boost::adj_list_vertex_property_map<boost::adjacency_list<boost::listS, > boost::listS, boost::bidirectionalS, Westerberg::VertexData, > Westerberg::EdgeData, boost::no_property, boost::listS>, > boost::detail::error_property_not_found, const > boost::detail::error_property_not_found&, boost::vertex_index_t>, > Reference = const boost::detail::error_property_not_found&, K = > void*](((const boost::put_get_helper<const > boost::detail::error_property_not_found&, > boost::adj_list_vertex_property_map<boost::adjacency_list<boost::listS, > boost::listS, boost::bidirectionalS, Westerberg::VertexData, > Westerberg::EdgeData, boost::no_property, boost::listS>, > boost::detail::error_property_not_found, const > boost::detail::error_property_not_found&, boost::vertex_index_t> > >&)((const boost::put_get_helper<const > boost::detail::error_property_not_found&, > boost::adj_list_vertex_property_map<boost::adjacency_list<boost::listS, > boost::listS, boost::bidirectionalS, Westerberg::VertexData, > Westerberg::EdgeData, boost::no_property, boost::listS>, > boost::detail::error_property_not_found, const > boost::detail::error_property_not_found&, boost::vertex_index_t> > >*)((boost::put_get_helper<const > boost::detail::error_property_not_found&, > boost::adj_list_vertex_property_map<boost::adjacency_list<boost::listS, > boost::listS, boost::bidirectionalS, Westerberg::VertexData, > Westerberg::EdgeData, boost::no_property, boost::listS>, > boost::detail::error_property_not_found, const > boost::detail::error_property_not_found&, boost::vertex_index_t> > >*)(&vertex_index)))), ((void* const&)((void* > const*)(+(&i)->std::_List_iterator<_Tp>::operator* [with _Tp = > void*]()))))' > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:63: > note: candidates are: std::basic_ostream<_CharT, _Traits>& > std::basic_ostream<_CharT, > _Traits>::operator<<(std::basic_ostream<_CharT, > _Traits>&(*)(std::basic_ostream<_CharT, _Traits>&)) [with _CharT = > char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:74: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(std::basic_ios<_CharT, > _Traits>&(*)(std::basic_ios<_CharT, _Traits>&)) [with _CharT = char, > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:86: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(std::ios_base&(*)(std::ios_base&)) [with _CharT = > char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:121: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:155: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long unsigned int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:98: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(bool) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:178: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(short int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:189: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(short unsigned int) [with _CharT = char, _Traits > = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:193: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:204: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(unsigned int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:179: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long long int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:214: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long long unsigned int) [with _CharT = char, > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:238: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(double) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:219: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(float) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:261: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long double) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:284: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(const void*) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:307: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(std::basic_streambuf<_CharT, _Traits>*) [with > _CharT = char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:449: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, char) [with > _CharT = char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:505: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, char) [with > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:460: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, signed char) [with > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:465: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char) > [with _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:567: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*) > [with _CharT = char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:612: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, const char*) [with > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:499: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, const signed > char*) [with _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:504: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned > char*) [with _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:82: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, > std::_Resetiosflags) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:116: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, > std::_Setiosflags) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:154: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setbase) > [with _CharT = char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:227: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, > std::_Setprecision) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:261: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setw) > [with _CharT = char, _Traits = std::char_traits<char>] > westerberg.cpp:118: instantiated from here > /usr/include/boost/graph/graphviz.hpp:269: error: no match for > 'operator<<' in 'out << boost::get [with PropertyMap = > boost::adj_list_vertex_property_map<boost::adjacency_list<boost::listS, > boost::listS, boost::bidirectionalS, Westerberg::VertexData, > Westerberg::EdgeData, boost::no_property, boost::listS>, > boost::detail::error_property_not_found, const > boost::detail::error_property_not_found&, boost::vertex_index_t>, > Reference = const boost::detail::error_property_not_found&, K = > void*](((const boost::put_get_helper<const > boost::detail::error_property_not_found&, > boost::adj_list_vertex_property_map<boost::adjacency_list<boost::listS, > boost::listS, boost::bidirectionalS, Westerberg::VertexData, > Westerberg::EdgeData, boost::no_property, boost::listS>, > boost::detail::error_property_not_found, const > boost::detail::error_property_not_found&, boost::vertex_index_t> > >&)((const boost::put_get_helper<const > boost::detail::error_property_not_found&, > boost::adj_list_vertex_property_map<boost::adjacency_list<boost::listS, > boost::listS, boost::bidirectionalS, Westerberg::VertexData, > Westerberg::EdgeData, boost::no_property, boost::listS>, > boost::detail::error_property_not_found, const > boost::detail::error_property_not_found&, boost::vertex_index_t> > >*)((boost::put_get_helper<const > boost::detail::error_property_not_found&, > boost::adj_list_vertex_property_map<boost::adjacency_list<boost::listS, > boost::listS, boost::bidirectionalS, Westerberg::VertexData, > Westerberg::EdgeData, boost::no_property, boost::listS>, > boost::detail::error_property_not_found, const > boost::detail::error_property_not_found&, boost::vertex_index_t> > >*)(&vertex_index)))), ((void* const&)((void* const*)(&boost::source > [with Directed = boost::bidirectional_tag, Vertex = void*, > OutEdgeListS = boost::listS, VertexListS = boost::listS, DirectedS = > boost::bidirectionalS, VertexProperty = Westerberg::VertexData, > EdgeProperty = Westerberg::EdgeData, GraphProperty = > boost::no_property, EdgeListS = boost::listS](((const > boost::detail::edge_base<boost::bidirectional_tag, void*>&)((const > boost::detail::edge_base<boost::bidirectional_tag, > void*>*)((boost::detail::edge_base<boost::bidirectional_tag, > void*>*)(&((boost::iterator_facade<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<void*, > boost::property<boost::edge_bundle_t, Westerberg::EdgeData, > boost::no_property> > >, > boost::detail::edge_desc_impl<boost::bidirectional_tag, void*>, > ptrdiff_t>, boost::detail::edge_desc_impl<boost::bidirectional_tag, > void*>, boost::bidirectional_traversal_tag, > boost::detail::edge_desc_impl<boost::bidirectional_tag, void*>, > ptrdiff_t>*)(&ei))->boost::iterator_facade<I, V, TC, R, D>::operator* > [with Derived = > boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<void*, > boost::property<boost::edge_bundle_t, Westerberg::EdgeData, > boost::no_property> > >, > boost::detail::edge_desc_impl<boost::bidirectional_tag, void*>, > ptrdiff_t>, Value = > boost::detail::edge_desc_impl<boost::bidirectional_tag, void*>, > CategoryOrTraversal = boost::bidirectional_traversal_tag, Reference = > boost::detail::edge_desc_impl<boost::bidirectional_tag, void*>, > Difference = ptrdiff_t]())))), ((const > boost::adjacency_list<boost::listS, boost::listS, > boost::bidirectionalS, Westerberg::VertexData, Westerberg::EdgeData, > boost::no_property, boost::listS>&)(+g)))))))' > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:63: > note: candidates are: std::basic_ostream<_CharT, _Traits>& > std::basic_ostream<_CharT, > _Traits>::operator<<(std::basic_ostream<_CharT, > _Traits>&(*)(std::basic_ostream<_CharT, _Traits>&)) [with _CharT = > char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:74: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(std::basic_ios<_CharT, > _Traits>&(*)(std::basic_ios<_CharT, _Traits>&)) [with _CharT = char, > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:86: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(std::ios_base&(*)(std::ios_base&)) [with _CharT = > char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:121: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:155: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long unsigned int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:98: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(bool) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:178: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(short int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:189: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(short unsigned int) [with _CharT = char, _Traits > = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:193: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:204: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(unsigned int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:179: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long long int) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:214: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long long unsigned int) [with _CharT = char, > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:238: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(double) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:219: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(float) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:261: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(long double) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:284: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(const void*) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:307: > note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, > _Traits>::operator<<(std::basic_streambuf<_CharT, _Traits>*) [with > _CharT = char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:449: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, char) [with > _CharT = char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:505: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, char) [with > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:460: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, signed char) [with > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:465: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char) > [with _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:567: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*) > [with _CharT = char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/bits/ostream.tcc:612: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, const char*) [with > _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:499: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, const signed > char*) [with _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/ostream:504: > note: std::basic_ostream<char, _Traits>& > std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned > char*) [with _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:82: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, > std::_Resetiosflags) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:116: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, > std::_Setiosflags) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:154: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setbase) > [with _CharT = char, _Traits = std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:227: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, > std::_Setprecision) [with _CharT = char, _Traits = > std::char_traits<char>] > /usr/lib/gcc/i386-redhat-linux/3.4.4/../../../../include/c++/3.4.4/iomanip:261: > note: std::basic_ostream<_CharT, _Traits>& > std::operator<<(std::basic_ostream<_CharT, _Traits>&, std::_Setw) > [with _CharT = char, _Traits = std::char_traits<char>] make: *** > [westerberg.o] Error 1 -- John Pye School of Mechanical and Manufacturing Engineering The University of New South Wales Sydney NSW 2052 Australia t +61 2 9385 5127 f +61 2 9663 1222 mailto:john.pye_AT_student_DOT_unsw.edu.au http://pye.dyndns.org/

1 0

Linking with boost/mingw
by Foster Gareth 03 Oct '05

03 Oct '05

Hello all, I am trying to build an autotooled project that will use boost wave and filesystem. I can see the following files that were built when I compiled boost that I could link to. " libboost_wave-mgw-1_33.lib libboost_wave-mgw-mt-sd-1_33.lib libboost_wave-mgw-d-1_33.lib libboost_wave-mgw-mt-sd.lib libboost_wave-mgw-d.lib libboost_wave-mgw-mt.lib libboost_wave-mgw-mt-1_33.lib libboost_wave-mgw-s-1_33.lib libboost_wave-mgw-mt-d-1_33.lib libboost_wave-mgw-s.lib libboost_wave-mgw-mt-d.lib libboost_wave-mgw-sd-1_33.lib libboost_wave-mgw-mt-s-1_33.lib libboost_wave-mgw-sd.lib libboost_wave-mgw-mt-s.lib libboost_wave-mgw.lib " Which of those should I be linking to? I have added the following to my configure.ac " # Ask user for path to boost stuff:. AC_ARG_WITH(boost, [ --with-boost=<path> prefix of Boost 1.33 installation. e.g. /usr/local or /usr], [BOOST_PREFIX=$with_boost], AC_MSG_ERROR([You must call configure with the --with-boost option. This tells configure where to find the Boost C++ librarys and headers. e.g. --with-boost=/usr/local or --with-boost=/usr]) ) AC_SUBST(BOOST_PREFIX) # Individual boost libs BOOST_WAVE_LIBS="-L${BOOST_PREFIX}/lib/libboost_wave-mgw-1_33.lib" BOOST_FILESYSTEM_LIBS="-L${BOOST_PREFIX}/lib/libboost_filesystem-mgw-1_33.li b" BOOST_CFLAGS="-I${BOOST_PREFIX}/include/boost-1_33" AC_SUBST(BOOST_WAVE_LIBS) AC_SUBST(BOOST_FILESYSTEM_LIBS) AC_SUBST(BOOST_CFLAGS) " I get link errors when I try to make this project however. So the include path is working, I suppose I just need to get the right library. As an aside, it would be _really_ nice if the boost jam build procedure installed package config .pc files, I know Boost doesn't use autotools, but lots of people do, and it would make their lives easier :) <wish> PKG_CHECK_MODULES(DEPS, boost >= 1.33) </wish> Cheers all, Gaz

2 1

Class assignment and referencing
by Wyatt Greenway 02 Oct '05

02 Oct '05

Hello! I want to do the following with Boost::Python: class A { public: std::string Value; }; class B { public: A Str; int Val; }; /* Boost::Code */ class_<A>("A") .def("Value", &A::Value) ; class_<B>("B") .def("Str", &B::Str) .def("Val", &B::Val) ; /*---------*/ I then wish to do this in Python: ############### MyB = B() B.Str = "Some string" print "String: %s"%B.Str # The output should be as follows: > String: Some string How do I acomplish this?

1 0

[iostreams] problem with bzip2_decompressor and incomplete files
by Tiago de Paula Peixoto 02 Oct '05

02 Oct '05

Hello. I've been experiencing a problem with the bzip2_decompressor filter when reading from a stream attached to an incomplete file. Instead of throwing an exception or reaching EOF, the program just hangs. Consider the following example code (hello.cc) taken from the documentation: ----------------------------------------------------------- #include <fstream> #include <iostream> #include <boost/iostreams/filtering_streambuf.hpp> #include <boost/iostreams/copy.hpp> #include <boost/iostreams/filter/bzip2.hpp> int main() { using namespace std; using namespace boost; using namespace boost::iostreams; ifstream file("hello.bz2", ios_base::in | ios_base::binary); filtering_streambuf<input> in; in.push(bzip2_decompressor()); in.push(file); boost::iostreams::copy(in, cout); } ----------------------------------------------------------- Suppose this is compiled as "hello". The following command will generate a simple bzip2-compressed file: $ echo -e "Hello world\n" | bzip2 > hello-complete.bz2 The next line will copy everything but the last byte from "hello-complete.bz2" to "hello.bz2": $ dd if=hello-complete.bz2 of=hello.bz2 bs=1 count=53 So now if the program is run: $ ./hello It just hangs in an infinite loop, instead of throwing an exception or reaching EOF. In the same situation, gzip_decompressor throws an exception... Is there a reason for this not happening in this case, or is this just a bug? I'm using boost 1.33.0 with GCC 4.0.1 on an i686 with GNU/Linux. Thanks for any help. -- Tiago de Paula Peixoto <tiago(a)forked.de>

2 1

Managing builds
by Aaron Griffin 02 Oct '05

02 Oct '05

I have a question, and it's something that has been bothering me for some time when dealing with boost. There are certain boost libs which require link libraries (static/dynamic). That's normal. However, if I wanted to statically link against, say, multithreaded Boost.Filesystem (gcc), I would need to add -Bstatic -lboost_filesystem-gcc-mt (or something to that effect). A majority of projects provide some sort of pkg-config files, or even their own app (gtk-config ?). Is there any functionality like this out there? Is there any way I can make this re-buildable on multiple target machines with multiple install locations in an easy manner? Ideally, something like: boost-config --static-libs filesystem would fit the standard scheme and allow for different machine to have different boost installation roots, and things of that nature. Without something like that, I am forced to either add configure flags, or force a user to modify a "config.mk" style file.

3 4

scoped_ptr help.
by John Sun 01 Oct '05

01 Oct '05

New to this topic,and need some help here. I have a class which use the scoped_ptr as a member variable. Class CTest { public: CTest(); Initialize(); ~CTest(); private: scoped_ptr<CTest2> m_spTest2; } For some reason, that I cannot initialize m_spTest2 in the member initialization list of the constructor, so I have to initialize in some other functions like in Initialize. CTest::Initialize() { int aa, bb; m_spTest2=new CTest2(aa, bb); } The compiler will complain about that, so what's the right way to do it. Thanks, Jianwei

6 8

Dynamic-only installation
by George Sakkis 01 Oct '05

01 Oct '05

Hi all, I'd like to create a single version for each boost library instead of eight, so I run: bjam -sTOOLS=gcc -sBUILD="release <runtime-link>dynamic <threading>multi" install Although it doesn't build the debug single-threaded versions, it still creates both the dynamic and the static ones. Does the static version have to be built always ? TIA, George

1 0

[asio] init acceptor to reuse_address?
by BRIDGES Dick 01 Oct '05

01 Oct '05

I created a server something like this: handle_accept(){ do_the_right_thing(); } Class Foo { socket_acceptor acceptor_; Public: Foo(demuxer& d) : acceptor_( d, ipv4::tcp::endpoint(2525)){} Example(demuxer& d) { stream_socket* p = new stream_socket(d); acceptor_.async_accept(p, handle_accept); } } Everything works fine except when I (1) connect a client; (2) ^C the server; (3) try to restart the server - which, as expected, yields "Address already in use". Mumbling something about defaulting modern socket libraries to SO_REUSEADDR, I started trying to figure out where to call set_option(stream_socket::reuse_address(true)) - and can't work it out. I've set_option() on sockets and the acceptor but can't make the acceptor reuse the address as long as the connection that was established is still in TIME_WAIT. Do you have an example that shows how this can be done? Regards, Dick Bridges

1 0