Re: [cgkit-user] Problem linking cgkit with boost 1.41 and above

[Matthias B. <mat...@gm...>]

Hi Ben,

On 15.06.11 06:09, Ben Hall wrote:
> I have tried statically linking and dynamically linking to boost 1.41 
> through to boost 1.46.1 with python 2.6.4 on 64bit linux (ubuntu lucid). 
> It compiles fine but I always receive this error on trying to import 
> cgkit.cgtypes:
> 
>  >>> import cgkit.cgtypes as cgtypes
> Traceback (most recent call last):
>    File "<stdin>", line 1, in <module>
>    File 
> "/vol/apps/python-2.6.4_64/lib/python2.6/site-packages/cgkit/cgtypes.py", line 
> 59, in <module>
>      import _core
> ImportError: 
> /vol/apps/python-2.6.4_64/lib/python2.6/site-packages/cgkit/_core.so: 
> undefined symbol: 
> _ZN5boost6python7objects9enum_baseC2EPKcPFP7_objectPKvEPFPvS6_EPFvS6_PNS0_9converter30rvalue_from_python_stage1_dataEENS0_9type_infoE
> 
> I can import without any issues if I link against boost 1.33 and 1.34. 
> Any suggestions on how to get this working would be much appreciated.

Well, I don't think it's an issue with Boost.Python itself. I can
compile against 1.46.1 on 64bit Linux just fine without getting any
errors at import time (this is on Fedora though, not Ubuntu).

Make sure you are not accidentally mixing two versions of Boost. The
include path and lib path must point to the same version. Also check the
Boost.Python library name. Depending on how Boost was build, the name
may just be "libboost_python" or it may include compiler information.
Also double check that Boost.Python was really built against the version
of Python you are using cgkit with.

You can check with ldd what Boost.Python lib _core.so will pick up.
Maybe LD_LIBRARY_PATH is pointing to a directory that contains a
different version of Boost?

Cheers,

- Matthias -