dolfin team mailing list archive

[Johan Jansson <johanjan@xxxxxxxxxxxxxxxx>]

On Fri, Sep 30, 2005 at 03:37:51PM +0200, Garth N. Wells wrote:
> With version 1.3.24 of SWIG, I can compile without fatal errors. Running
> test.sh, I'm getting a similar error to what Anders has been seeing,
> 
> Traceback (most recent call last):
>   File "swigtest.py", line 1, in ?
>     import dolfin
>   File
> "/usr/local/garth/fenics/dolfin/cvs/dolfin/src/demo/scripting/pydolfin/dolfin.py",
> line
>     import _dolfin
> ImportError:
> /usr/local/garth/fenics/dolfin/cvs/dolfin/src/demo/scripting/pydolfin/_dolfin.so:
>  ymbol: _ZN6dolfin12EdgeIteratorC1ERKNS_4NodeE
> 
> 
> Garth
> 

Ok, that's a much more reasonable error. I don't think we have sorted
linking very well in DOLFIN yet, and I guess it shows up here when
dealing with shared libraries. GCC wants libraries listed in order of
dependence, but the way we've solved this is just to repeat the
libraries several times until GCC is happy.

At one point I got a similar error to yours on AffineMap::cell(). The
way I solved it was to repeat the libraries once more:

$(CXX) -shared $< $(LFLAGS) -o $@ $(LFLAGS)

This is obviously not a robust solution, and we should try to do the
right thing instead. I'll try to find a better solution.

  Johan