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