Hi Tiego,

Thank you so much for helping us out! You were right, CGAL were not properly configured on the server. 

Instead of building everything from source on CentOS7, I built graph-tool-2.8 instead of the latest release, following the step-by-step directions here: https://gist.github.com/sbonner0/2138f2e3e2b249df51c765e1656f9d48. I hope this link will help others in similar situations. 

Much obliged,
Yu

On Wed, Jun 29, 2016 at 3:00 AM, <graph-tool-request@skewed.de> wrote:
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Today's Topics:

   1. Re: Installation error: graph_triangulation.Io
      (Tiago de Paula Peixoto)
   2. Re: Installation error: graph_triangulation.Io
      (Tiago de Paula Peixoto)


----------------------------------------------------------------------

Message: 1
Date: Tue, 28 Jun 2016 18:43:00 +0200
From: Tiago de Paula Peixoto <tiago@skewed.de>
To: Main discussion list for the graph-tool project
        <graph-tool@skewed.de>
Subject: Re: [graph-tool] Installation error: graph_triangulation.Io
Message-ID: <a116a57c-3de4-32bc-f666-7ff9b4e3933f@skewed.de>
Content-Type: text/plain; charset="utf-8"

On 28.06.2016 18:38, Yu Zheng wrote:
> CGAL version: 4.9

This might be some incompatibility with version 4.9. I will investigate.

In the mean time, you may downgrade to version 4.8, which should solve
the problem.

Best,
Tiago

--
Tiago de Paula Peixoto <tiago@skewed.de>

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Message: 2
Date: Tue, 28 Jun 2016 22:45:22 +0200
From: Tiago de Paula Peixoto <tiago@skewed.de>
To: Main discussion list for the graph-tool project
        <graph-tool@skewed.de>
Subject: Re: [graph-tool] Installation error: graph_triangulation.Io
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On 28.06.2016 18:38, Yu Zheng wrote:
> CGAL version: 4.9

I verified, and such a CGAL version simply does not exist. The latest
version is 4.8.1, which works fine with graph-tool. You can verify here:

       https://github.com/CGAL/cgal/releases

Please check the _actual_ version of CGAL you have installed.

Best,
Tiago

--
Tiago de Paula Peixoto <tiago@skewed.de>

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