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python-wheel-build / fromager

Build your own wheels
https://fromager.readthedocs.io/en/latest/
Apache License 2.0
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Improve parallel job configuration #403

Closed tiran closed 1 month ago

tiran commented 1 month ago

Use DIST_EXTRA_CONFIG env var to configure setuptools to use parallel builds in build_ext. This speeds up compilation of packages such as Cython. The feature is disabled by default, because it breaks some packages like Numba 0.60.0.

Apply package env variables last. Package configuration can now override variables like MAX_JOBS.

tiran commented 1 month ago

On my test system, the change speeds up Cython-3.0.11-0-cp311-cp311-linux_x86_64.whl build from 2:42 to 0:57.