[Python-modules-team] Bug#464784: python-numpy: After transition to gfortran _dotblas.so is lost

Ondrej Certik ondrej at certik.cz
Fri Feb 22 16:58:07 UTC 2008

On Fri, Feb 22, 2008 at 4:09 PM,  <otizonaizit at yahoo.com> wrote:
> Package: python-numpy
>  Version: 1:1.0.4-6
>  Followup-For: Bug #464784
>  After transition to gfortran it appears that the matrix
>  multiplication function (numpy.dot) is now linked to the slow
>  version in numpy/core/multiarray.so instead of being linked to the
>  faster ATLAS version (in previous package version available under
>  numpy/core/_dotblas.so). Another side effect of the transition is
>  that ATLAS libraries are not found by
>  /usr/lib/python2.4/site-packages/numpy/distutils/system_info.py
>  which makes it impossible to compile extension modules linking to
>  ATLAS and LAPACK with f2py. ld seems to be configured correctly,
>  here is my /etc/ld.so.conf:
>  include /etc/ld.so.conf.d/*.conf
>  and my /etc/ld.so.conf.d/atlas.conf:
>  /usr/lib/sse2/atlas
>  /usr/lib/sse2
>  /usr/lib/atlas
>  let me know if you need further information to help in debugging!
>  keep up with the excellent work,


thanks very much for the bug report. Could you please give me a simple
(python?) example that worked before and doesn't work now?
I'll look at this over the weekend. Of course, if you know, how to fix
it, feel free to fix it in our svn in Debian Python Modules Team.


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