linux-kernel - Re: [PATCH] kbuild: source include/config/auto.conf instead of ${KCONFIG

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Date:   Thu, 14 Mar 2019 02:42:01 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Cc:     Nicholas Piggin <npiggin@...il.com>,
        Michael Forney <forney@...gle.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Palmer Dabbelt <palmer@...ive.com>,
        Nicolas Pitre <nicolas.pitre@...aro.org>
Subject: Re: [PATCH] kbuild: source include/config/auto.conf instead of ${KCONFIG_CONFIG}

On Fri, Mar 8, 2019 at 2:50 PM Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:
>
> As commit 423a8155facf ("kbuild: Fix reading of .config in
> link-vmlinux.sh") addressed, some shells fail to perform '.' if
> ${KCONFIG_CONFIG} does not contain a slash at all.
>
> Instead, we can source include/config/auto.conf, which obviously
> contain slashes, and we do not expect its file path overridden by
> a user. Perhaps, the performance might be slightly better since
> unset CONFIG options are stripped from include/config/auto.conf.
>
> scripts/setlocalversion already works this way.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---

Applied to linux-kbuild.


>  scripts/adjust_autoksyms.sh | 9 +--------
>  scripts/link-vmlinux.sh     | 9 +--------
>  2 files changed, 2 insertions(+), 16 deletions(-)
>
> diff --git a/scripts/adjust_autoksyms.sh b/scripts/adjust_autoksyms.sh
> index 6e6d639..84bf6b5 100755
> --- a/scripts/adjust_autoksyms.sh
> +++ b/scripts/adjust_autoksyms.sh
> @@ -39,14 +39,7 @@ case "$KBUILD_VERBOSE" in
>  esac
>
>  # We need access to CONFIG_ symbols
> -case "${KCONFIG_CONFIG}" in
> -*/*)
> -       . "${KCONFIG_CONFIG}"
> -       ;;
> -*)
> -       # Force using a file from the current directory
> -       . "./${KCONFIG_CONFIG}"
> -esac
> +. include/config/auto.conf
>
>  # Generate a new ksym list file with symbols needed by the current
>  # set of modules.
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index bc7f1fc..dc0e8c5 100755
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -171,14 +171,7 @@ if [ "$1" = "clean" ]; then
>  fi
>
>  # We need access to CONFIG_ symbols
> -case "${KCONFIG_CONFIG}" in
> -*/*)
> -       . "${KCONFIG_CONFIG}"
> -       ;;
> -*)
> -       # Force using a file from the current directory
> -       . "./${KCONFIG_CONFIG}"
> -esac
> +. include/config/auto.conf
>
>  # Update version
>  info GEN .version
> --
> 2.7.4
>


-- 
Best Regards
Masahiro Yamada