Created attachment 454566 [details] build.log Attached is a build log. I attempted seeing if the unstable graph-tool-2.16 might work but it requires C++14 support not available in stable gcc and there's also #596950. The only other solution there might be is to update to the latest graph-tool (2.19) and see if it fixes the issue.
Running: append-cxxflags -std=c++14 (from flag-o-matic.eclass) could help to get it fixed with older gcc versions :/ Did you try?
also try with 2.19
Just for the record. 2.19 fails to configure. checking whether x86_64-pc-linux-gnu-g++ supports C++14 features by default... no checking whether x86_64-pc-linux-gnu-g++ supports C++14 features with -std=gnu++14... no checking whether x86_64-pc-linux-gnu-g++ supports C++14 features with -std=gnu++0x... no configure: error: *** A compiler with support for C++14 language features is required. my gcc-config: x86_64-pc-linux-gnu-4.9.3-vanilla *
graph-tool-2.19 needs GCC 5 at least. Until GCC 5 is not stabilised, we can't fix this.
I'm experiencing this also. Why did Gentoo drop the older boost ebuilds, they worked fine and now I've got 5 bugs that I can't fix or work around?
2.19 is stabilised now. commit d848f64957066a30a8429ced59354f00f15b5620 Author: David Seifert <soap@gentoo.org> Date: Wed May 17 20:05:50 2017 +0200 dev-python/graph-tool: Remove old Bug: https://bugs.gentoo.org/show_bug.cgi?id=601036
