linux-kernel - Re: [PATCH] kbuild: show warning for 'make headers

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Message-ID: <CAK7LNARcrGJnoBuzC8mSJqAXPQjdTt-bC8EZEwNBTCTb=o3yQA@mail.gmail.com>
Date:   Wed, 10 Mar 2021 00:29:57 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Michal Marek <michal.lkml@...kovi.net>
Subject: Re: [PATCH] kbuild: show warning for 'make headers_check'

On Tue, Mar 2, 2021 at 11:26 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> Since commit 7ecaf069da52 ("kbuild: move headers_check rule to
> usr/include/Makefile"), the headers_check target is no-op.
>
> This stub target is remaining here in case some scripts still invoke
> 'make headers_check'. In order to prompt people to remove stale code,
> show a noisy warning message if used. The stub will be really removed
> after the Linux 5.15 release.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---

Applied to linux-kbuild.



>
>  Makefile | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index f9b54da2fca0..a3336d9b4a22 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1339,7 +1339,11 @@ headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts
>  # Deprecated. It is no-op now.
>  PHONY += headers_check
>  headers_check:
> -       @:
> +       @echo >&2 "=================== WARNING ==================="
> +       @echo >&2 "Since Linux 5.5, 'make headers_check' is no-op,"
> +       @echo >&2 "and will be removed after Linux 5.15 release."
> +       @echo >&2 "Please remove headers_check from your scripts."
> +       @echo >&2 "==============================================="
>
>  ifdef CONFIG_HEADERS_INSTALL
>  prepare: headers
> --
> 2.27.0
>


-- 
Best Regards
Masahiro Yamada