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[Xen-devel] Implementaiton of cc-option in Config.mk



Hi all

The implementation of cc-option (grepping the option being tested in
output) in Config.mk now makes it not possible to detect if -Og is
supported because "-Og" doesn't appear in the output if it is not
supported. I suspect there will be other options that cc-option can't work
with.

It is implemented like that because we try to detect -Wno-* option. But
why is that important? Can't we just ignore -Wno-* if they aren't
supported? Does anyone has an idea how to make cc-option work for -Og
(and other options)?

Thanks,
Wei.

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