I need to adjust the default configuration used by “distutils” for compilation.
In my default build of branch release-pypy3.5-5.x, the toplevel
“distutils.sysconfig” dispatches as follows:
if '__pypy__' in sys.builtin_module_names:
from distutils.sysconfig_pypy import *
from distutils.sysconfig_pypy import _config_vars # needed by setuptools
and sysconfig_pypy.py unconditionally sets some configuration variables such as
“CC” and “LDSHARED”.
CPython reads from a configuration file which can be change with an environment
variable and it is this technique we use. This does not yet seem supported in
PyPy’s alternate implementation “distutils.sysconfig_cpython.py”
Two questions:
Generally, why are there are two implementations of sysconfig and what
motivates the default choice?
What changes are recommended to allow a configuration file here?
Thanks
david
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