I wrote: > The existing ATLAS setup (before the change) just worked! Actually, I just noticed the ATLAS packages we ship in F18 are also broken: libblas.so.3 is missing, so if something links only -lblas, or links -lblas before -llapack etc., it will get the unoptimized reference BLAS functions! The packaging needs to be fixed to symlink %{_libdir}/atlas*/libblas.so.3 → libatlas.so.3. Kevin Kofler -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct