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Date:   Sun, 20 Dec 2020 01:10:08 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Jonathan Corbet <corbet@....net>,
        Arnd Bergmann <arnd@...db.de>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/2] Documentation/kbuild: Document COMPILE_TEST dependencies

On Wed, Dec 9, 2020 at 12:29 AM Geert Uytterhoeven
<geert+renesas@...der.be> wrote:
>
> Document best practises for using COMPILE_TEST dependencies.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
>  Documentation/kbuild/kconfig-language.rst | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/Documentation/kbuild/kconfig-language.rst b/Documentation/kbuild/kconfig-language.rst
> index 1cf1aebdd6cdf8fa..2b746332d8aa6bce 100644
> --- a/Documentation/kbuild/kconfig-language.rst
> +++ b/Documentation/kbuild/kconfig-language.rst
> @@ -553,6 +553,17 @@ with "depends on m".  E.g.::


Both applied to linux-kbuild. Thanks.

I replaced the two-spaces between sentences
because the majority in this file adopts
one-space between sentences.
(I still see some inconsistencies, though.)






>
>  limits FOO to module (=m) or disabled (=n).
>
> +Compile-testing
> +~~~~~~~~~~~~~~~
> +If a config symbol has a dependency, but the code controlled by the config
> +symbol can still be compiled if the dependency is not met, it is encouraged to
> +increase build coverage by adding an "|| COMPILE_TEST" clause to the
> +dependency.  This is especially useful for drivers for more exotic hardware, as
> +it allows continuous-integration systems to compile-test the code on a more
> +common system, and detect bugs that way.
> +Note that compile-tested code should avoid crashing when run on a system where
> +the dependency is not met.
> +
>  Kconfig recursive dependency limitations
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> --
> 2.25.1
>


-- 
Best Regards
Masahiro Yamada

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