On Mon, 2017-10-30 at 17:29 +0000, Chris Wilson wrote:
> To quote kbuild/makefiles.txt:
>
> cc-disable-warning checks if gcc supports a given warning and returns
> the commandline switch to disable it. This special function is needed,
> because gcc 4.4 and later accept any unknown -Wno-* option and only
> warn about it if there is another warning in the source file.
>
> This is exactly what we were trying to achieve with cc-option -Wno-foo and
> failed miserably.
>
> Reported-by: kbuild-all@xxxxxx
> Fixes: 39bf4de89ff7 ("drm/i915: Add -Wall -Wextra to our build, set warnings to full")
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Poor person who greps for "-Wno-", should we add comment
"# -Wno-whatever" at the end of each line?
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Regards, Joonas
--
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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