I had the same annoying trouble... Is it really a bug in arch? I don't
find anywhere where libopenblas is supposed to provide the LAPACK
interface. To me it is just true for SageMath and false for Archlinux.
Le 13/01/2020 à 11:44, Dima Pasechnik a écrit :
On Sat, Jan 11, 2020 at 11:35 AM arojas <nqn1...@gmail.com> wrote:
El sábado, 11 de enero de 2020, 11:23:32 (UTC+1), Dima Pasechnik escribió:
On Sat, 11 Jan 2020, 10:19 arojas, <nqn...@gmail.com> wrote:
I suspect this may be due to our openblas package only providing libblas.so
(not libcblas.so or liblapack.so, which in our case come from the netlib blas).
Are you saying that your libopenblas.so does not provide everything that is in
openblas by default?
This is largely defeating its purpose.
Sage's openblas does provide the cblas and lapack capabilities.
In that case, openblas' spkg-configure should check whether cblas symbols are
provided by the system openblas, and if not it should compile sage's one. It
shouldn't unconditionally assume that that's always the case.
I maintain that it's a bug in Arch, that libopenblas cannot be used as
a replacement of cblas and lapack, for it defeats its purpose.
Most uses of BLAS routines are either via LAPACK, or from C/C++, via cblas.
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