[issue6731] Add option of non-zero exit status of setup.py when building of extensions has failed

[Arfrever Frehtes Taifersar Arahesis]

Arfrever Frehtes Taifersar Arahesis <Arfrever.FTA at GMail.Com> added the comment:

When building of an extension has failed due to external reasons (e.g.
headers from too old version of a Python dependency), user might prefer
to be forced to fix these reasons, than to have Python built without an
extension. If `make` doesn't fail, user might not notice the problem
during building of Python, but some time later during trying to import
some modules. Such behavior is also especially desired in distributions
(like Gentoo) in which packages are automatically built on users'
systems.

Maybe the option could be named --enable-strict-building-of-extensions?

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<http://bugs.python.org/issue6731>
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