linux-kernel - Re: [PATCH] init/Kconfig: make CC_OPTIMIZE_FOR

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Date:   Sat, 10 Nov 2018 00:03:13 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Changbin Du <changbin.du@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH] init/Kconfig: make CC_OPTIMIZE_FOR_DEBUGGING visible only
 for GCC

On Tue, Nov 6, 2018 at 12:18 AM Changbin Du <changbin.du@...il.com> wrote:
>
> Currently CC_OPTIMIZE_FOR_DEBUGGING is only able to build with GCC.
> For clang, -Og optimization level could break kernel build. So make
> CC_OPTIMIZE_FOR_DEBUGGING visible only for GCC.
>
> Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
> Signed-off-by: Changbin Du <changbin.du@...il.com>
> ---

I squashed this into the previous patch in the kbuild tree.

Thanks!


>  init/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/init/Kconfig b/init/Kconfig
> index 0fb9c0b5f1a1..d5fb0ee1400a 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -1107,6 +1107,7 @@ config CC_OPTIMIZE_FOR_SIZE
>
>  config CC_OPTIMIZE_FOR_DEBUGGING
>         bool "Optimize for better debugging experience (-Og)"
> +       depends on CC_IS_GCC
>         depends on $(cc-option,-Og)
>         select NO_AUTO_INLINE
>         help
> --
> 2.17.1
>


-- 
Best Regards
Masahiro Yamada