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Hi all, |
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|
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I need to have a personal installation of Sage to do development work. |
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However, I also want to reduce my upgrade times by installing a system |
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atlas. |
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|
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To do so, I added the science overlay and emerged |
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sci-libs/atlas[lapack,fortran,threads]. Thereafter, I added the environment |
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variable |
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|
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SAGE_ATLAS_LIB=/usr/lib |
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|
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and proceeded to compile sage in my home directory. Atlas fails with the |
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error that it can not find liblapack. The exact error message is given |
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below: |
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|
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Cannot find liblapack.* in /usr/lib |
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Unable to find one of liblapack, libcblas, libatlas or libf77blas |
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in the directory None |
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Set SAGE_ATLAS_LIB to the directory containing liblapack, libcblas, |
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libatlas and libf77blas (either .a, .so, .dylib extensions) if |
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you wish to use existing ATLAS libraries. For more details, see |
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http://sagemath.org/doc/installation/source.html#environment-variables |
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Unset SAGE_ATLAS_LIB to build ATLAS from source. |
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|
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I looked at the dependencies of sci-mathematics/sage in the sage-on-gentoo |
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overlay, and I see that virtual/cblas and virtual/lapack is pulled in by |
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sci-libs/fflas-ffpack. This ebuild is pulled in by sci-libs/linbox, and |
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finally linbox is pulled in by sage. |
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|
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However, the following command only pulls in the virtual packages, which |
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means that I already have lapack installed, but probably under a different |
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library name. |
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|
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~/tmp/sage-on-gentoo» emerge -pvq virtual/cblas virtual/lapack |
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[ebuild N ] virtual/cblas-2.0 |
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[ebuild N ] virtual/lapack-3.4 USE="-doc" |
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|
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Can anyone tell me which library name corresponds to liblapack.so? I can |
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then make a symlink and proceed with building my personal copy of sage. |
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Here is an output of equery files: |
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|
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~/tmp/sage-on-gentoo» equery files atlas | grep '/usr/lib.*lapack' |
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/etc/env.d/alternatives/lapack/atlas-threads/usr/lib64/pkgconfig/lapack.pc |
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/etc/env.d/alternatives/lapack/atlas/usr/lib64/pkgconfig/lapack.pc |
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/usr/lib64/libatlclapack.so |
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/usr/lib64/libatlclapack.so.3 |
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/usr/lib64/libatllapack.so |
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/usr/lib64/libatllapack.so.3 |
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/usr/lib64/libptclapack.so |
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/usr/lib64/libptclapack.so.3 |
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/usr/lib64/libptlapack.so |
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/usr/lib64/libptlapack.so.3 |
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/usr/lib64/pkgconfig/atlas-clapack-threads.pc |
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/usr/lib64/pkgconfig/atlas-clapack.pc |
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/usr/lib64/pkgconfig/atlas-lapack-threads.pc |
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/usr/lib64/pkgconfig/atlas-lapack.pc |
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|
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Thanks and regards, |
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basu. |
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