[issue33990] CPPFLAGS during ./configure are not passed-through in sysconfig.customize_compiler

[Eric N. Vander Weele]

Change by Eric N. Vander Weele <ericvw at gmail.com>:


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keywords: +patch
pull_requests: +7606
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33990>
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