[issue23545] Turn on extra warnings on GCC

[Martin Panter]

Martin Panter added the comment:

-Wall is already added (unconditionally) to $OPT above. What’s the point of also adding it to $CFLAGS_NODIST as well? Does it have to be added to both?

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nosy: +martin.panter

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23545>
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