That resolved the numpy issue. Now I get another error message though: configure: creating ./config.status config.status: creating Makefile gawk: symbol lookup error: /home/pmj27/anaconda2/lib/libreadline.so.6: undefined symbol: PC config.status: error: could not create Makefile I have attached the config.log <http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/file/n4027068/config.log> again. Doing some googling this is an issue others have observed too with anaconda (https://github.com/ContinuumIO/anaconda-issues/issues/152 ). Is this something addressable within graph-tool or by providing configure flags or is this something that needs to be solved within anaconda? Best, Philipp -- 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.