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Message-ID: <CAKwvOd=Zwkm33_8MTFKoVfs8XEEUKgzQFqJN3nar_ryKnbJTPw@mail.gmail.com>
Date: Wed, 28 Aug 2019 11:26:08 -0700
From: Nick Desaulniers <ndesaulniers@...gle.com>
To: Sedat Dilek <sedat.dilek@...il.com>
Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>,
Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
Nathan Chancellor <natechancellor@...il.com>,
Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
Arnd Bergmann <arnd@...db.de>,
Michal Marek <michal.lkml@...kovi.net>,
Clang-Built-Linux ML <clang-built-linux@...glegroups.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] kbuild: refactor scripts/Makefile.extrawarn
On Wed, Aug 28, 2019 at 12:20 AM Sedat Dilek <sedat.dilek@...il.com> wrote:
>
> On Wed, Aug 28, 2019 at 7:55 AM Masahiro Yamada
> <yamada.masahiro@...ionext.com> wrote:
> >
> > Instead of the warning-[123] magic, let's accumulate compiler options
> > to KBUILD_CFLAGS directly as the top Makefile does. I think this makes
> > easier to understand what is going on in this file.
> >
> > This commit slightly changes the behavior, I think all of which are OK.
> >
> > [1] Currently, cc-option calls are needlessly evaluated. For example,
> > warning-3 += $(call cc-option, -Wpacked-bitfield-compat)
> > needs evaluating only when W=3, but it is actually evaluated for
> > W=1, W=2 as well. With this commit, only relevant cc-option calls
> > will be evaluated. This is a slight optimization.
> >
> > [2] Currently, unsupported level like W=4 is checked by:
> > $(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown)
> > This will no longer be checked, but I do not think it is a big
> > deal.
> >
>
> Hi Masahiro Yamada,
>
> thanks for your patch series.
>
> If KBUILD_ENABLE_EXTRA_GCC_CHECKS does extra(-warning)-checks for GCC and Clang,
> please rename the Kconfig into...
>
> KBUILD_ENABLE_EXTRA_CC_CHECKS
>
> ...or something similiar (and maybe with some notes in its Kconfig help-text?).
I too would like to see that changed.
--
Thanks,
~Nick Desaulniers
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