[Numpy-discussion] Calling routines from a Fortran library using python

Nils Wagner nwagner@iam.uni-stuttgart...
Thu Feb 18 07:22:38 CST 2010


On Thu, 18 Feb 2010 11:55:07 +0100
  Matthieu Brucher <matthieu.brucher@gmail.com> wrote:
>> Ok I have extracted the *.o files from the static 
>>library.
>>
>> Applying the file command to the object files yields
>>
>> ELF 64-bit LSB relocatable, AMD x86-64, version 1 
>>(SYSV),
>> not stripped
>>
>> What's that supposed to mean ?
> 
> It means that each object file is an object file 
>compiled with -fPIC,
> so you just have to make a shared library (gfortran 
>-shared *.o -o
> libmysharedlibrary.so)
> 
> Then, you can try to open the library with ctypes. If 
>something is
> lacking, you may have to add -lsome_library to the 
>gfortran line.
> 
> Matthieu
> -- 
> Information System Engineer, Ph.D.
> Blog: http://matt.eifelle.com
> LinkedIn: http://www.linkedin.com/in/matthieubrucher
  
O.k. I tried

gfortran -shared *.o -o libmysharedlibrary.so

/usr/bin/ld: dxop.o: relocation R_X86_64_32 against `a 
local symbol' can not be used when making a shared object; 
recompile with -fPIC
dscpde.o: could not read symbols: Bad value

Any idea ?

Nils


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