Re: [boost] [C++-sig] Python Binding woes for BGL with Intel Compiler

From: Sandeep Gupta (gupta.sandeep_at_[hidden])
Date: 2008-08-25 18:25:02

Works fine with g++.  I don't think bgl_python comes with test_suite.

I followed your direction and added explicit destructor for basic_graph.
The old error is now gone but python now complains about:
boost::graph::python::basic_graph<boost::undirectedS>::remove_edge(boost::graph::python::basic_descriptor<boost::detail::edge_desc_impl<boost::undirected_tag,
void*>, boost::undirectedS>)
(thanks for the cool c++filt tip).

I hope this helps to narrow down the problem. Should I go ahead and
explicitly define all the missing routines?

(* On slightly unrelated note: compiler complains when I add
~basic_graph<undirectedS>::~basic_graph() with error
"function "boost::graph::python::basic_graph<DirectedS>::~basic_graph" has
already been defined".
However  I find strange that  Graph::~basic_graph() where
Graph is typedefed as basic_graph<undirectedS> as acceptable.)

On Mon, Aug 25, 2008 at 1:46 PM, David Abrahams <dave_at_[hidden]> wrote:

>
> on Mon Aug 25 2008, "Sandeep Gupta" <gupta.sandeep-AT-gmail.com> wrote:
>
> > Hi David,
> >   I hope its not a compatability issue. Here are the steps I followed
> >
> > 1. Downloaded python source and compiled with intel compiler.
> >
> > 2. Downloaded boost 1.36 and checkout bgl_python from svn repository of
> > osl.iu.edu.
> >
> > 3. Followed the instructions for building/installing boost, boost.python,
> > and bgl_python.
> >
> > 4. The tests under  examples under libs/python/example/ pass.
>
> What about the bgl_python tests?
>
> > 5. Firedup python and issued command "import boost.graph as bgl". This
> line
> > fails  with error:
> >
> > Traceback (most recent call last):
> >   File "<stdin>", line 1, in <module>
> >   File "...../bgl-python/lib/python/boost/graph/__init__.py", line 16, in
> > <module>
> >     from boost.graph._graph import *
> > ImportError: "...../bgl-python/lib/python/boost/graph/_graph.so:
> undefined
> > symbol: _ZN5boost5graph6python11basic_graphINS_11undirectedSEED1Ev"
>
>   $ echo '_ZN5boost5graph6python11basic_graphINS_11undirectedSEED1Ev' |
> c++filt
>  boost::graph::python::basic_graph<boost::undirectedS>::~basic_graph()
>
> >From what I can tell, it looks like Intel is failing to instantiate that
> destructor for some reason.  You might try adding an explicit
> instantiation.  In any case, it looks like a compiler bug to me.
>
> > 5. Tried several permutation/combination of LD_LIBRARY_PATH and
> > sys.path.append('.. ')  but with no success.
> >
> > I also tried with bgl_python in the sandbox and the same issue shows
> > up.
>
> Hmm, I dunno.  Another thing worth doing: try it with g++ and see if it
> works.
>
> --
> Dave Abrahams
> BoostPro Computing
> http://www.boostpro.com
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