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SubjectRe: [PATCH] kbuild: Add extra gcc checks

* Borislav Petkov <bp@alien8.de> wrote:

> Add a 'W=1' Makefile switch which adds additional checking per build
> object.
>
> The idea behind this option is targeted at developers who, in the
> process of writing their code, want to do the occasional
>
> make W=1 [target.o]
>
> and let gcc do more extensive code checking for them. Then, they
> could eyeball the output for valid gcc warnings about various
> bugs/discrepancies which are not reported during the normal build
> process.
>
> For more background information and a use case, read through this
> thread: http://marc.info/?i=20110218091716.GA4384@bicker
>
> Cc: Ingo Molnar <mingo@elte.hu>
> Cc: Michal Marek <mmarek@suse.cz>
> Cc: linux-kbuild@vger.kernel.org
> Signed-off-by: Borislav Petkov <bp@alien8.de>

Nice.

Acked-by: Ingo Molnar <mingo@elte.hu>

We enable a lot of GCC warnings in tools/perf/ as well, and while there are false
positives occasionally, the general effect on code quality is positive. We combine
it with -Werror to make sure warnings do not accumulate.

Thanks,

Ingo


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