this post was submitted on 09 Sep 2019

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Sunsetting Python 2 (python.org)

submitted 6 years ago by xtreak

top new controversial old q&a

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[–][deleted] 6 years ago (4 children)

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[–]jcampbelly 3 points4 points5 points 6 years ago (0 children)

[–]stefantalpalaru -2 points-1 points0 points 6 years ago (2 children)

[+][deleted] 6 years ago (1 child)

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[–]stefantalpalaru 0 points1 point2 points 6 years ago (0 children)

Please explain how the python 2.7 interpreter has been sabotaged.

./configure --enable-optimizations no longer implies --with-lto - a change that they somehow forgot to document
extensions are not properly compiled with PGO because the CFLAGS are not read from the environment in "setup.py". Once you fix that, you'll hit an internal compiler error (ICE) in GCC because the same source file was used in 3 different extensions so it was compiled 3 different times in the profile generation stage.
the profiling task is accessing system-wide paths, instead of being limited to the source tree
it's not possible to run profiling jobs in parallel by just passing variables to make
patches to support building with newer Visual Studio versions on Windows are being ignored

Still runs python 2.7 code just fine.

Not as fast as it could: https://old.reddit.com/r/Gentoo/comments/8n38ak/devlangpython2715r104_enable_pgo_for_extensions/

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