Ni! I had the problem below when compiling graph-tool on a 64 bit amd machine. It's seems a problem generating position independent code while linking the libraries. The linker asks me to compile with -fPIC, but doing that changes nothing (by adding "-fPIC" to CXXFLAGS in the Makefile, should I have done someting different?) One thing I notice is that the last call, to "g++ -shared", does not include -fPIC. All others do, so this might be expected (as in "it's just linking") I remember someone on the list successfully compiled on a 64 bit machine, did you have to do something special? []s ale ~~ /bin/bash ../../libtool --tag=CXX --mode=link g++ -Wall -I/usr/include/python2.4 -I/usr/include -ftemplate-depth-150 -fvisibility=hidden -fvisibility-inlines-hidden -O99 -fPIC -o libgraph_tool.la -rpath /usr/local/lib/python2.4/site-packages graph.lo graph_properties.lo graph_correlations.lo graph_correlations_combined.lo graph_correlations_neighbours.lo graph_assortativity.lo graph_clustering.lo graph_extended_clustering.lo graph_generation.lo graph_distance.lo graph_distance_sampled.lo graph_reciprocity.lo graph_minimum_spanning_tree.lo graph_community.lo graph_community_network.lo graph_line_graph.lo graph_io.lo graph_bind.lo graphml.lo read_graphviz_spirit.lo -L/usr/lib/python2.4 -lpython2.4 -L/usr/lib -lboost_python -lboost_iostreams -lexpat g++ -shared -nostdlib /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../lib64/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.1.2/crtbeginS.o .libs/graph.o .libs/graph_properties.o .libs/graph_correlations.o .libs/graph_correlations_combined.o .libs/graph_correlations_neighbours.o .libs/graph_assortativity.o .libs/graph_clustering.o .libs/graph_extended_clustering.o .libs/graph_generation.o .libs/graph_distance.o .libs/graph_distance_sampled.o .libs/graph_reciprocity.o .libs/graph_minimum_spanning_tree.o .libs/graph_community.o .libs/graph_community_network.o .libs/graph_line_graph.o .libs/graph_io.o .libs/graph_bind.o .libs/graphml.o .libs/read_graphviz_spirit.o -L/usr/lib/python2.4 -lpython2.4 -L/usr/lib -lboost_python -lboost_iostreams /usr/lib/libexpat.so -L/usr/lib/gcc/x86_64-linux-gnu/4.1.2 -L/usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -lstdc++ -lm -lc -lgcc_s /usr/lib/gcc/x86_64-linux-gnu/4.1.2/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../lib64/crtn.o -Wl,-soname -Wl,libgraph_tool.so.0 -o .libs/libgraph_tool.so.0.0.0 /usr/bin/ld: .libs/graph.o: relocation R_X86_64_PC32 against `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()@@GLIBCXX_3.4' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: Bad value collect2: ld returned 1 exit status make[3]: *** [libgraph_tool.la] Error 1 make[3]: Leaving directory `/scratch/abdo/svn/graph-tool/src/graph' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/scratch/abdo/svn/graph-tool/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/scratch/abdo/svn/graph-tool' make: *** [all] Error 2