I did not go through a whole build process.

Changing:


    if _PYTHON_BUILD:
        vars['BLDSHARED'] = vars['LDSHARED']
to

    if _PYTHON_BUILD:
        vars['LDSHARED'] = vars['BLDSHARED']

is not going to help if both variables are wrong in _sysconfigdata*.py

Also,

The patch is not applied in any version - yet the values in _sysconfigdata*.py are different, i.e., version dependent (without the patch).

If I errored in my assumption that the file being patched is reading _sysconfigdata*.py then I will need to patch and build from scratch to see the effect on _sysconfigdata.py