Distutils runtime_library_dirs broken on Windows

[janssen]

BPO	2437
Nosy	@loewis, @tarekziade, @merwok, @zooba

^{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/tarekziade'
closed_at = <Date 2021-02-03.18:29:00.139>
created_at = <Date 2008-03-20.20:23:14.616>
labels = ['type-bug', 'library']
title = 'Distutils runtime_library_dirs broken on Windows'
updated_at = <Date 2021-02-03.18:29:00.138>
user = 'https://bugs.python.org/janssen'

bugs.python.org fields:

activity = <Date 2021-02-03.18:29:00.138>
actor = 'steve.dower'
assignee = 'tarek'
closed = True
closed_date = <Date 2021-02-03.18:29:00.139>
closer = 'steve.dower'
components = ['Distutils']
creation = <Date 2008-03-20.20:23:14.616>
creator = 'janssen'
dependencies = []
files = []
hgrepos = []
issue_num = 2437
keywords = []
message_count = 6.0
messages = ['64200', '67039', '81838', '82981', '82982', '386399']
nosy_count = 7.0
nosy_names = ['loewis', 'janssen', 'tarek', 'lgautier', 'eric.araujo', 'rpetrov', 'steve.dower']
pr_nums = []
priority = 'high'
resolution = 'out of date'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue2437'
versions = ['Python 2.7', 'Python 3.4', 'Python 3.5']

[janssen]

The distutils.unixcompiler.runtime_library_dirs() function, used when
compiling with MinGW or Cygwin on Windows, fails catastrophically
because the return result of sysconfig.get_config_var("CC") returns
None. It should probably be prepared for that eventuality.

[lgautier]

The bug is still here with Python 2.5.2.

I anyone want to have it work urgently, there is a quick but very ugly
fix: add
g['CC'] = 'gcc'
into the function _init_nt() in the file Lib\distutils\sysconfig.py
of the Python install.

[tarekziade]

Bill, do you have a example to reproduce the problem so I can write the
test ?

Laurent, right. but we need to figure out how to get the CC name in
MinGW/Cygwin environment.

I am not familiar with them. Does CC gets set in the environment ? if so
we could use a similar mechanism that we have in customize_compiler()

[janssen]

No, Tarek, I don't have a MinGW machine right now. But it should be
easy to reproduce; just invoke that call I originally reported. The
distutils code is just making assumptions that it shouldn't be making.

[janssen]

Tarek writes:

Laurent, right. but we need to figure out how to get the CC name in
MinGW/Cygwin environment.

I am not familiar with them.

Since this bug is specifically about that environment, shouldn't it be
handled by someone who is familiar with them? Not objecting, here, but
it seems unlikely to result in a rapid fix. And MinGW and Cygwin are
pretty different, IMHO; don't mix them together here.

[zooba]

Distutils is now deprecated (see PEP-632) and all tagged issues are being closed. From now until removal, only release blocking issues will be considered for distutils.

If this issue does not relate to distutils, please remove the component and reopen it. If you believe it still requires a fix, most likely the issue should be re-reported at https://github.com/pypa/setuptools