On 2013-08-22 00:19, Burcin Erocal wrote:
Hi,
On Wed, 21 Aug 2013 20:02:02 +0800
P Purkayastha <[email protected]> wrote:
I need to have a personal installation of Sage to do development
work. However, I also want to reduce my upgrade times by installing a
system atlas.
To do so, I added the science overlay and emerged
sci-libs/atlas[lapack,fortran,threads]. Thereafter, I added the
environment variable
SAGE_ATLAS_LIB=/usr/lib
and proceeded to compile sage in my home directory. Atlas fails with
the error that it can not find liblapack. The exact error message is
given below:
Cannot find liblapack.* in /usr/lib
Unable to find one of liblapack, libcblas, libatlas or libf77blas
in the directory None
Set SAGE_ATLAS_LIB to the directory containing liblapack, libcblas,
libatlas and libf77blas (either .a, .so, .dylib extensions) if
you wish to use existing ATLAS libraries. For more details, see
http://sagemath.org/doc/installation/source.html#environment-variables
Unset SAGE_ATLAS_LIB to build ATLAS from source.
if you make Sage believe that the atlas package was installed properly,
the installation proceeds without trouble. So as a quick workaround,
just do
touch spkg/installed/atlas-<version_number>
I always do this on my system. It would be good to find out the proper
solution of course. :)
The main problem here is that Gentoo support the installation of
multiple BLAS/LAPACK at once.
For that reason there is no libraries on the system installed with the
names:
libcblas.*
libf77blas.*
liblapack.*
My recommendation for you is to create a folder in your home directory
and
link all the libraries you need with the appropriate name in a lib
subfolder
and pass the parent directory to SAGE_ATLAS_LIB.
Francois
