[issue34689] Lib/sysconfig.py expands non-variables

Change by Terry J. Reedy : -- nosy: +berker.peksag, serhiy.storchaka versions: +Python 3.10 -Python 2.7, Python 3.5, Python 3.6, Python 3.7, Python 3.8 ___ Python tracker ___

[issue34689] Lib/sysconfig.py expands non-variables

Change by Erwan Le Pape : -- pull_requests: +19696 pull_request: https://github.com/python/cpython/pull/20439 ___ Python tracker ___

[issue34689] Lib/sysconfig.py expands non-variables

Change by Erwan Le Pape : -- keywords: +patch pull_requests: +8786 stage: -> patch review ___ Python tracker ___ ___

[issue34689] Lib/sysconfig.py expands non-variables

New submission from Erwan Le Pape : Lib/sysconfig.py _parse_makefile needs to expand Makefile-style variables which includes `$()` `${}` variables with a litteral `$` being `$$`. That last particular point is properly accounted for in the first half of the function when determining values