hi I solved the problem of python version, but i have another problem. when o run sudo ./configure --prefix=/opt/local --with-boost=/opt/local --disable-visibility PYTHON_VERSION=2.7 LDFLAGS=-L/opt/local/lib/ i have this: config.status: creating src/graph/flow/Makefile config.status: creating src/graph/layout/Makefile config.status: creating src/graph/search/Makefile config.status: creating src/graph_tool/Makefile config.status: creating config.h config.status: config.h is unchanged config.status: executing depfiles commands config.status: executing libtool commands configure: Modifying libtool to correctly link libstdc++ before anything else... well i search for problems like this in maining list but i don´t find a solution for this. note: i install the python, CGAL, boost, expat, scipy and numpy from macports. -- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.