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From: Stefan Behnel <stefan_ml@behnel.de>
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Subject: Re: I'd like to add -march=native to my pip builds
Date: Fri, 8 Apr 2016 15:38:09 +0200
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Xref: csiph.com comp.lang.python:106678

Neal Becker schrieb am 08.04.2016 um 15:27:
> I'd like to add -march=native to my pip builds.  How can I do this?

First of all, make sure you don't install binary packages and wheels.
Changing the C compiler flags will require source builds.

Then, it should be enough to set the CFLAGS environment variable, e.g.

  CFLAGS="-O3 -march=native"  pip install  --no-use-wheel  numpy

Stefan