Ni! Hi Zahra,

This last error seems to be a consequence of boost being compiled with
a different compiler version than graph_tool.

I encourage you to follow Tiago's request and open a bug with the
homebrew issue tracker. Only this will properly fix things for you and
others in the long run.

Now, _assuming you don't need the triangulation function_, I have a
patch applied to one of my systems which lets me disable CGAL:


https://git.skewed.de/solstag/graph-tool/commit/7737cafb3a9a4a3667aadc9b9806ef7c1fd9a4ef

This patch should let you configure with '--disable-cgal' and compile
with your regular compiler without facing your original issue.

Cheers,

ale
.~´

Le jeudi 08 novembre 2018 à 07:17 -0500, Zahra Sheikhbahaee a écrit :
> Hi Tiage,
> 
> I was compiling graph-tool with gcc8.2 and I was getting this error
> then I used gcc7 with this command line:
> ./configure CPPFLAGS="-I/Users/anaconda2/pkgs/pycairo-1.18.0-
> py27h4d1f301_0/include -I/usr/local/include" -with-
> cgal=/Users/anaconda2/pkgs/cgal-4.12-py27h8634a1c_1 --
> prefix=/Users/anaconda2 LDFLAGS="-L/usr/local/lib" CC=gcc-7 CXX=g++-7
> 
> It got compiled but again when I import graph-tool in python, I
> receive this error message:
> 
> >>> from graph_tool.all import *
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/Users/anaconda2/lib/python2.7/site-
> packages/graph_tool/__init__.py", line 111, in <module>
>     dl_import("from . import libgraph_tool_core as libcore")
>   File "/Users/anaconda2/lib/python2.7/site-
> packages/graph_tool/dl_import.py", line 61, in dl_import
>     exec(import_expr, local_dict, global_dict)
>   File "<string>", line 1, in <module>
> ImportError: dlopen(/Users/anaconda2/lib/python2.7/site-
> packages/graph_tool/libgraph_tool_core.so, 8): Symbol not found:
> __ZN5boost6system6detail25generic_category_instanceE
>   Referenced from: /Users/anaconda2/lib/python2.7/site-
> packages/graph_tool/libgraph_tool_core.so
>   Expected in: flat namespace
>  in /Users/anaconda2/lib/python2.7/site-
> packages/graph_tool/libgraph_tool_core.so
> >
> 
> What can be the problem now?
> Thanks again.
> 
> Best,
> Z.
> 
> On Thu, Nov 8, 2018 at 1:33 AM Tiago de Paula Peixoto <
> [email protected]> wrote:
> > Am 07.11.18 um 10:05 schrieb Zahra Sheikhbahaee:
> > > any suggestion?
> > > 
> > 
> > The homebrew recipe must be patched against the new version of
> > CGAL. Could
> > you please open an issue at the homebrew issue tracker, so that
> > this can be
> > handled there? Thanks!
> > 
> > Best,
> > Tiago
> > 
> > _______________________________________________
> > graph-tool mailing list
> > [email protected]
> > https://lists.skewed.de/mailman/listinfo/graph-tool

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