[Trilinos-Users] How to link libblas.so

[Martin Vymazal]

Hello Jim,


  Thank you for your reply. I compiled atlas with blas and lapack. My  
~/local/atlas/lib contains:
   libatlas.a
   libblas.a -> libf77blas.a
   libcblas.a
   libf77blas.a
   liblapack.a
   libptcblas.a
   libptf77blas.a
   libsatlas.so
   libtatlas.so

The symbolic link libblas.a was created by me. I tried to set
   -D BLAS_LIBRARIES=$HOME/local/lapack/lib/libf77blas.a
and also
   -D BLAS_LIBRARIES=$HOME/local/lapack/lib/libblas.a

The error is still the same:
-- Processing enabled TPL: BLAS
--   Searching for library 'blas' ...
--   Searching for library 'blas_win32' ...
-- Warning: Could not find a library in the set "blas blas_win32" for  
the TPL BLAS!  Please manually set BLAS_LIBRARY_DIRS and/or  
BLAS_LIBRARY_NAMES or just TPL_BLAS_LIBRARIES to point to the BLAS  
libraries!

Do you have an idea what am I doing wrong? Can trilinos be linked to  
'atlas' blas?

  Best regards,

    Martin


Quoting "Willenbring, James M" <jmwille at sandia.gov>:

> Martin,
>
> This is something I have seen before.  You need to either create a  
> soft link from libblas.so pointing to libblas.so.3, or you can just  
> specify the entire path and library as your blas:  
> -DBLAS_LIBRARIES=/usr/lib64/libblas.so.3
>
> Jim
>
> -----Original Message-----
> From: trilinos-users-bounces at software.sandia.gov  
> [mailto:trilinos-users-bounces at software.sandia.gov] On Behalf Of  
> Martin Vymazal
> Sent: Tuesday, July 26, 2011 1:14 PM
> To: trilinos-users at software.sandia.gov
> Subject: [Trilinos-Users] How to link libblas.so
>
> Dear Trilinos users & developers,
>
>   I have trouble configuring trilinos (10.6.1) to detect blas. The
> folder /usr/lib64 contains:
>
> /usr/lib64//libblas.so.3 -> libblas.so.3.2.1
> /usr/lib64//libblas.so.3.2 -> libblas.so.3.2.1
> /usr/lib64//libblas.so.3.2.1
>
> and I run cmake with the following options:
>    ...
>    -D TPL_ENABLE_BLAS:BOOL=ON \
>    -D BLAS_LIBRARY_DIRS:PATH=/usr/lib64 \
>    -D BLAS_LIBRARY_NAMES:STRING="blas" \
>    ...
>
> And I always end up with the following:
>
> Getting information for all enabled TPLs ...
>
> -- Processing enabled TPL: MPI
> -- Processing enabled TPL: BLAS
> --   BLAS_LIBRARY_DIRS='/usr/lib64'
> --   Searching for library 'blas' ...
> -- Warning: Could not find a library in the set "blas" for the TPL
> BLAS!  Please manually set BLAS_LIBRARY_DIRS and/or BLAS_LIBRARY_NAMES
> or just TPL_BLAS_LIBRARIES to point to the BLAS libraries!
> CMake Error at cmake/package_arch/TPLDeclareLibraries.cmake:196 (MESSAGE):
>    Error, could not find the BLAS Library! Please manually set
>    BLAS_LIBRARY_DIRS and/or BLAS_LIBRARY_NAMES or just TPL_BLAS_LIBRARIES to
>    point to the BLAS libraries!
>
> I don't have this problem when configuring with static blas library
> (libblas.a) in a different machine.
>
> Could you please tell me how to configure Trilinos properly? Thank you
> very much.
>
> Best regards,
>
>     Martin Vymazal
>
>
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