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How to recompile openblas
-------------------------
Some notes about how to recompile packages from unstable:
`<http://wiki.debian.org/DebianUnstable>`_
Openblas with Sandybridge target support is available in the experimental
repository in debian. I recompiled it as follows:
TARGET=SANDYBRIDGE USE_OPENMP=1 apt-get -b source openblas
By default, it uses pthreads, instead of openmp, which was interfering
with other use of openmp in my code. If we dont' specify the target, it
builds a lot of different architectures, and the right one gets selected
at runtime. Unfortunately it doesn't include Sandybridge yet.
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