[SciPy-user] SciPy finds wrong lapack

Robert Kern robert.kern at gmail.com
Tue Jan 2 11:18:18 CST 2007

J Oishi wrote:
> Thanks for the tip. I tried setting the search_static_first=true, but  
> the problem remains.
>> What is your site.cfg and where (and what) are the relevant  
>> libraries on your
>> system?
> my site.cfg (for both scipy and numpy) reads
> search_static_first=true
> [atlas]
> atlas_libs = lapack,cblas, atlas, f77blas
> My atlas libs are in /usr/local/lib/atlas, but the /usr/lib/ 
> liblapack.so.3 versions are the ones being linked into calc_lwork.so.  
> I think this might be related to the fact that
>           liblapack.so.3 => /usr/lib/liblapack.so.3 (0x0045a000)
>           libblas.so.3 => /usr/lib/libblas.so.3 (0x00111000)
> are from my (possibly tainted) RedHat libraries, rather than from my  
> good ATLAS versions
> /usr/local/lib/atlas/liblapack.a
> /usr/local/lib/atlas/libcblas.a

Ah. Then you need to include that information in your site.cfg:

atlas_libs = lapack, f77blas, cblas, atlas
library_dirs = /usr/local/lib/atlas

Also, note the correction to the order of the libraries.

Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
 that is made terrible by our own mad attempt to interpret it as though it had
 an underlying truth."
  -- Umberto Eco

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