Re: [f2py] mixed f77/f90 code

2010/11/24 Pearu Peterson <[email protected]>

>
>
> On 11/24/2010 10:41 AM, Jasper Werhahn wrote:
> > dear pearu,
> >
> > thanks a lot. i just don't understand one thing - i do of course only
> > call fit_gm from python. but fit_gm itself continues to call the
> > lmder-subroutines that actually do the fitting. how do i get this passed
> > on then? greetings,
>
> As I read the code, fit_gm uses gMorse as a callable argument to lmder
> subroutines. Since Morse_mod.f90 is linked to the generated extension
> module then all bits are there for fit_gm. May be I should clarify that
> f2py builds wrappers to fortran subroutines, f2py does not convert
> fortran codes to python. A wrapper is a lightweight C function that
> converts Python objects to C objects that can be passed on to Fortran
> subroutines.
>
> Regards,
> Pearu
>

yes, you read the code right. this seems to make perfect sense. can i find
details of how to link the wrapped fit_gm subroutine to the actual fitting
then? if i build the wrapper from only fit_gm and morse_mod according to
your instructions, making sure that only these functions and subroutines are
included in the pyf file, it builds the .so-file. when i import that in
python via from fit_gm import *, python gives me the error message:

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: dlopen(./fit_gm.so, 2): Symbol not found: _lmder1_
Referenced from: /Users/umbra/Desktop/test/fit_gm.so
Expected in: dynamic lookup

no reference to lmder1 is made in my pyf-file (i grepped it to make sure).


Dipl.-Phys. Jasper Werhahn
TU Muenchen, Physikdepartment E11
James-Franck-Strasse
85748 Garching
Germany

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