On Tue, Sep 03, 2013 at 02:39:04PM -0400, Skipper Seabold wrote:
> from numpy.distutils.system_info import get_info
> blas_info = get_info('blas_opt', 0)
> blas_info.get('define_macros')

I don't know.

> My numpy is linked against openblas, and I don't have a
> 'define_macros' key, so I don't know.

Currently, scikit-learn doesn't build with openblas. However, it is
important to keep in mind that openblas has some quirks (like the fact
that can cannot use it after forking).

> Is it always the case then that scikit-learn links against the
> included reference BLAS if the above fails. Is there some other way to
> specify the source of local optimized BLAS headers and libraries?

I believe that editing the standard site.cfg file, as in the scipy build
system should do it.

HTH,

Gaƫl

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