python / python/cpython

sysconfig --generate-posix-vars creates wrong file when cross compiling

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3.11 build type-bug
Dominant language
Python
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Forks
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PR merge metrics
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Description

BPO 45909
Nosy @tiran, @moreati, @ethanhs

Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-11-27.12:05:59.850>
labels = ['type-bug', 'build', '3.11']
title = 'sysconfig --generate-posix-vars creates wrong file when cross compiling'
updated_at = <Date 2021-11-27.19:03:41.450>
user = 'https://github.com/tiran'

bugs.python.org fields:

activity = <Date 2021-11-27.19:03:41.450>
actor = 'christian.heimes'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Build', 'Cross-Build']
creation = <Date 2021-11-27.12:05:59.850>
creator = 'christian.heimes'
dependencies = []
files = []
hgrepos = []
issue_num = 45909
keywords = []
message_count = 2.0
messages = ['407141', '407163']
nosy_count = 3.0
nosy_names = ['christian.heimes', 'Alex.Willmer', 'ethan smith']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue45909'
versions = ['Python 3.11']

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the sysconfig --generate-posix-vars command in a cross-compiling setup and inspect which generated file is produced. Trace the sysconfig build entry point and compare the generated file with the expected cross-compilation output. Done means the command consistently creates the correct file without breaking native builds.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
build-system
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
42/100

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