#20157: make numpy and scipy use pkg-config to find blas/lapack
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Reporter: fbissey | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.1
Component: PLEASE CHANGE | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Old description:
> Since we want the choice of blas/lapack to be configurable by `.pc` files
> we need to have `numpy` and `scipy` obey to `pkg-config`.
>
> This is complicated by the fact that `numpy/scipy`'s build system will
> look for
> 1) mkl
> 2) openblas
> 3) threaded atlas 3.10.x (tatlas.so)
> 4) single thread atlas 3.10.x (satlas.so)
> 5) threaded atlas (any versions)
> 6) single thread atlas (any versions)
> 7) accelerate on OS X
> 8) blas/lapack configuration provided by the user
> 9) blas/lapack source provided by the user
>
> In that order from (1) to (9). Note that the user's wishes are ignored
> unless everything else fails. Getting `numpy/scipy` to obey `pkg-config`
> may therefore require patching.
New description:
Since we want the choice of blas/lapack to be configurable by `.pc` files
we need to have `numpy` and `scipy` obey to `pkg-config`.
This is complicated by the fact that `numpy/scipy`'s build system will
look for
1) mkl
2) openblas
3) threaded atlas 3.10.x (tatlas.so)
4) single thread atlas 3.10.x (satlas.so)
5) threaded atlas (any versions)
6) single thread atlas (any versions)
7) accelerate on OS X
8) blas/lapack configuration provided by the user
9) blas/lapack source provided by the user
In that order from (1) to (9). Note that the user's wishes are ignored
unless everything else fails. Getting `numpy/scipy` to obey the user wish
means whatever they are means using not well documented variables to
disable the auto-detections steps 1 to 6.
--
Comment (by fbissey):
Setting everything to None except for `BLAS` and `LAPACK` and then giving
those some values is not enough. I have got something quite ugly.
--
Ticket URL: <http://trac.sagemath.org/ticket/20157#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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