Messages in this thread | | | Date | Fri, 5 Apr 2019 18:05:50 +0200 | From | Luis Ressel <> | Subject | Re: [PATCH] objtool: Don't use -Werror |
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On Fri, Apr 05, 2019 at 09:39:26AM -0500, Josh Poimboeuf wrote:
> Hm, I would actually argue the reverse. Warnings are generally bad and > -Werror is useful for ensuring that we don't have any. For warnings > that don't provide value, we just disable those individual warnings.
Sure, during development it's an excellent idea to investigate compiler warnings, and -Werror can be useful for that. But the Linux kernel is built by countless users in wildly varying environments, and it's almost a given that someone will use a compiler that'll complain about a valid part of your code whose style it considers bad.
As an example, the warning that's breaking the build for me is -Wundef complaining about several "#if UNDEFINED_IDENTIFIER" constructs in the libelf headers. (I agree with gcc in considering this bad style, but it's perfectly valid C, and there probably wasn't a warning about it back when this header was written.)
Regards, Luis
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