[Python-Dev] backporting the _sysconfigdata.py module to 2.7 (original) (raw)

Benjamin Peterson benjamin at python.org
Thu Mar 21 22:48:50 CET 2013

2013/3/21 Matthias Klose <doko at ubuntu.com>:

I'd like to backport issue13150, the sysconfigdata.py module to 2.7. My motivation is not the improved startup time, but the ability to cross-build extension modules using distutils/setuptools. The basic idea is to use the python interpreter of the build machine (the machine you build on), and the sysconfigdata.py for the host machine (the machine you build for). This kind of setup works fine as long as the setup.py for a third party package gets all build related information from the sysconfig.py module, and not directly from os or sys (e.g. sys.platform).

The patch for issue13150 doesn't change any API's, but only moves the computation of the config vars from runtime to build time. I'd like to avoid backporting this to 3.2 as well, because the cross-build support is currently only found in 2.7, 3.3 and the trunk.

This is a fairly small non-userfacing change, so okay.

-- Regards, Benjamin

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