[petsc-users] specifying -framework Accelerate for blas/lapack on Mac

[Satish Balay]

-llapack -lblas on Mac are links to the libraries in accelerate
framework - and configure by default will find and use these libraries
by default. For this - don't sepcify any blas/lapack options.

But if you really need the -framework flag - you can try the configure
option:

LIBS="-framework Accelerate"

Satish

On Mon, 30 Jul 2012, Geoffrey Irving wrote:

> Hello,
> 
> What's the right way to tell PETSc configure to use "-framework
> Accelerate" to get blas/lapack on Mac?  I tried
> 
>     ./configure --prefix=/usr/local --with-shared-libraries=1
> --PETSC_DIR=/Users/irving/otherlab/download/petsc-3.3-p2
> --download-ml=yes --with-mpi-dir=/usr/local
> --with-blas-lapack-lib="-framework Accelerate"
> 
> which failed with
> 
> ===============================================================================
>              Configuring PETSc to compile on your system
> ===============================================================================
> TESTING: checkLib from
> config.packages.BlasLapack(config/BuildSystem/config/packages/BlasLapack.py:112)
> 
> 
> 
> *******************************************************************************
>          UNABLE to CONFIGURE with GIVEN OPTIONS    (see configure.log
> for details):
> -------------------------------------------------------------------------------
> You set a value for --with-blas-lapack-lib=<lib>, but ['-framework',
> 'Accelerate'] cannot be used
> *******************************************************************************
> 
> --with-blas-lapack-lib=Accelerate fails similarly.
> 
> Thanks,
> Geoffrey
>