Moreover, SageMath does work on archlinux perfectly well when
installed from the package manager. Antonio, do you have some
tweaks to deal with the blas/lapack settings when compiling
for archlinux?
Le 22/01/2020 à 16:31, Vincent Delecroix a écrit :
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 <[email protected]> wrote:
El sábado, 11 de enero de 2020, 11:23:32 (UTC+1), Dima Pasechnik
escribió:
On Sat, 11 Jan 2020, 10:19 arojas, <[email protected]> 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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