linux-kernel - Re: [PATCH v2 1/4] kbuild: Add cc-option-raw macro

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Message-ID: <CAK7LNAQ5zNgKLEfij_Ch1KyuFnK=6XudqDekJkXF=3uRZkEZuA@mail.gmail.com>
Date:   Wed, 14 Jun 2017 10:27:48 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        "H . J . Lu" <hjl.tools@...il.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Michal Marek <mmarek@...e.com>, X86 ML <x86@...nel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Michael Davidson <md@...gle.com>,
        Greg Hackmann <ghackmann@...gle.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Stephen Hines <srhines@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Arnd Bergmann <arnd@...db.de>,
        Bernhard Rosenkränzer 
        <Bernhard.Rosenkranzer@...aro.org>,
        Peter Foley <pefoley2@...oley.com>,
        Behan Webster <behanw@...verseincode.com>,
        Douglas Anderson <dianders@...omium.org>
Subject: Re: [PATCH v2 1/4] kbuild: Add cc-option-raw macro

2017-06-14 8:08 GMT+09:00 Matthias Kaehlcke <mka@...omium.org>:
> cc-option uses KBUILD_CFLAGS and KBUILD_CPPFLAGS when it determines
> whether an option is supported or not. This is fine for options used to
> build the kernel itself, however some components like the x86 boot code
> use a different set of flags.
>
> Add the new macro cc-option-raw which serves the same purpose as
> cc-option but has additional parameters. One parameter is the compiler
> with which the check should be performed, the other the compiler options
> to be used instead KBUILD_C*FLAGS. The compiler parameter allows other
> macros like hostcc-option to be implemented on top of cc-option-raw.
>
> Also rework cc-option to make use of cc-option-raw.
>
> Suggested-by: Arnd Bergmann <arnd@...db.de>
> Suggested-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
> ---
> Changes in v2:
> - Changed macro name from Add cc-option-no-kbuild to cc-option-raw
> - Added compiler as parameter to the macro
> - Reworked cc-option to make use of cc-option-raw
> - Updated commit message
>
>  scripts/Kbuild.include | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>

Acked-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
(if nothing better pops up)

-- 
Best Regards
Masahiro Yamada