On Fri, Jun 14, 2019 at 2:43 AM Jani Nikula <jani.nik...@linux.intel.com> wrote:
> No opinion on the said variables above, but, FWIW, personally I think
> it's fine to add the cflags to supress warnings locally where needed in
> order to be able to achieve the greater goal of removing the cflags
> globally.

I think there's on the order of ~10 of these:
https://github.com/ClangBuiltLinux/linux/issues?q=is%3Aissue+is%3Aopen+label%3A-Wunused-const-variable
Nathan's got a pretty good handle on just fixing them.

> In drivers/gpu/drm/i915/Makefile we actually go for much stricter
> warnings than the kernel defaults, and disable a more limited and
> tailored set of warnings.

I like this.

>
> You can do this both on a subdir and file level with subdir-ccflags-y
> and CFLAGS_filename.o, respectively.

That said, I have used this trick before, but I feel like the fewer
people that know about this trick, the less it can be [ab]used.
-- 
Thanks,
~Nick Desaulniers
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