Comment # 43 on bug 1177260 from Egbert Eich

(In reply to Stefan Br���ns from comment #41)
> 
> 1. Build numpy as part of Backports, which already *has* cblas.
> 2. Bring an updated lapack (>= 3.6.0) to SLE. But as far as I understand,
> this *also* goes into backports only, so we also need to build numpy in
> backports.

We're actually pursuing option 2. lapack has been fighting us all the way, on
SLE/Leap we suddenly saw errors in the tests due to precision issues. I'm in
the process of fixing this by setting -mfpmath=sse there. On Factory, we cannot
do this so we leave -ffloat-store for the tests. With a future compiler this
may well break as precision using the 80bit long-double extended precision in
the fpu may always cause this.