[New-bugs-announce] [issue40424] AIX: parallel build and ld WARNINGS

[Michael Felt]

New submission from Michael Felt <aixtools at felt.demon.nl>:

Currently, on AIX, whenever the -j option is passed to make there are many WARNINGS from the loader (ld) re: duplicate symbols.

While it is not possible to eliminate these warnings completely - as some are not related to the Python build, but external (3rd party) packaging - MOST of these warnings can be eliminated by ensuring that the export file creation completes before additional steps try to use it.

By adding a small test to see if the export file is in the process of being made - and waiting for that to finish - the messages "go away".

The PR that is being proposed only affects AIX (a script named makeaix_exp). The script has not been modified in 22 years - so I guess the -j option is something that showed up after 1998 :)

I know it is not perfect - but removes a tremendous amount of noise - most of the time.

Michael

p.s. requesting backport to 3.8 so all buildbots benefit.

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components: Build
messages: 367541
nosy: Michael.Felt
priority: normal
severity: normal
status: open
title: AIX: parallel build and ld WARNINGS
type: behavior
versions: Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40424>
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