I get this error when I try to follow the installation instructions here: https://git.skewed.de/count0/graph-tool/wikis/installation-instructions I know this is not related to graph-tool, but this problem brakes one of the easy installation option that graph-tool had for Mac. Please let me know if anyone has an easy fix. -- Sent from: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/