python-config code should be in sysconfig

@warsaw

BPO	11602
Nosy	@warsaw, @rhettinger, @pitrou, @ned-deily, @merwok, @cjrh, @nanjekyejoannah, @FFY00

^{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 = 'https://github.com/nanjekyejoannah'
closed_at = None
created_at = <Date 2011-03-18.19:11:17.938>
labels = ['type-bug', 'build', '3.11']
title = 'python-config code should be in sysconfig'
updated_at = <Date 2021-10-23.18:47:55.894>
user = 'https://github.com/pitrou'

bugs.python.org fields:

activity = <Date 2021-10-23.18:47:55.894>
actor = 'FFY00'
assignee = 'nanjekyejoannah'
closed = False
closed_date = None
closer = None
components = ['Build']
creation = <Date 2011-03-18.19:11:17.938>
creator = 'pitrou'
dependencies = []
files = []
hgrepos = []
issue_num = 11602
keywords = []
message_count = 6.0
messages = ['131357', '131358', '138610', '404884', '404902', '404903']
nosy_count = 8.0
nosy_names = ['barry', 'rhettinger', 'pitrou', 'ned.deily', 'eric.araujo', 'cjrh', 'nanjekyejoannah', 'FFY00']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'needs patch'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue11602'
versions = ['Python 3.11']

python-config has the following non-trivial code for discovery of cflags/ldflags, which should be callable as a sysconfig API instead:

elif opt in ('--includes', '--cflags'):
    flags = ['-I' + sysconfig.get_path('include'),
             '-I' + sysconfig.get_path('platinclude')]
    if opt == '--cflags':
        flags.extend(getvar('CFLAGS').split())
    print(' '.join(flags))

elif opt in ('--libs', '--ldflags'):
    libs = getvar('LIBS').split() + getvar('SYSLIBS').split()
    libs.append('-lpython' + pyver + sys.abiflags)
    # add the prefix/lib/pythonX.Y/config dir, but only if there is no
    # shared library in prefix/lib/.
    if opt == '--ldflags':
        if not getvar('Py_ENABLE_SHARED'):
            libs.insert(0, '-L' + getvar('LIBPL'))
        libs.extend(getvar('LINKFORSHARED').split())
    print(' '.join(libs))

Also, it begs the question why distutils doesn't use the same code in its compiler class, or even in customize_compiler()...

+1

+1 on the request. I don’t think it can go in 3.2, though. I’ll propose a patch, this will let me learn more about the flags.

Also, it begs the question why distutils doesn't use the same code in
its compiler class, or even in customize_compiler()...

Certainly because distutils pre-dates python-config. In packaging, we should certainly use sysconfig functions.

@eric.araujo curious if you still have the interest to work on this. If not, I can help open a PR.

I don’t have specific expertise in this, so please take it!

I can help out, but would like to wait until we get a resolution in python/issues-test-cpython#25718 as it will likely conflict.

Closing as duplicate of more recent issue, which has more up to date discussion.

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python-config code should be in sysconfig #55811

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python-config code should be in sysconfig #55811

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pitrou commented on Mar 18, 2011

rhettinger commented on Mar 18, 2011

merwok commented on Jun 18, 2011

nanjekyejoannah commented on Oct 23, 2021

merwok commented on Oct 23, 2021

FFY00 commented on Oct 23, 2021

StanFromIreland commented on Aug 17, 2025

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