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Re: gsl, lapack and blas on cygwin
- From: "James R. Phillips" <antiskid56-cygwin at yahoo dot com>
- To: Teun Burgers <a dot rburgers at quicknet dot nl>, cygwin-apps at cygwin dot com
- Date: Wed, 13 Jul 2005 18:09:34 -0700 (PDT)
- Subject: Re: gsl, lapack and blas on cygwin
- Reply-to: antiskid56-cygwin at yahoo dot com
--- Teun Burgers wrote:
> Hello James,
>
> James R. Phillips wrote:
>
> > Please try installing these via "tar -C / -xjf lapack-3.0-2.tar.bz2", and
> then
> > see if you can build gsl with linker flag "-lblas" to pick up the cblas
> > routines.
>
> I did. The build succeeds. Unfortunately I get crashes in
> cblas tests for sdsdot from gsl. I have built a debug version of your
> lapack blas from the source version. It goes wrong in the call from
> cblas_sdsdot.c to sdsdotsub.f. The values in sdsdotsub are bogus.
> So that has been narrowed down quite a bit, but I still can't find
> the cause. It needs more work and I will keep you posted.
>
OK, the cause appears to be operator error, not compiler error. There were
some duplicate addresses in the lapack blas and cblas libraries, which was
easily solved by modifying the link.
Please try the downloading the package again, as I have updated it to fix this
problem.