linux-kernel - Re: [PATCH 4/4] Makefile: add headers

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Message-ID: <CAK7LNASe3zQv82pQsTdWtia9nQQm8XGgs_mrUMvbLRkxa0T48Q@mail.gmail.com>
Date:   Tue, 12 Jul 2022 10:35:30 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Guillaume Tucker <guillaume.tucker@...labora.com>
Cc:     Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Shuah Khan <shuah@...nel.org>,
        Kees Cook <keescook@...omium.org>, kernel@...labora.com,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH 4/4] Makefile: add headers_install to kselftest targets

On Sat, Jul 9, 2022 at 1:23 AM Guillaume Tucker
<guillaume.tucker@...labora.com> wrote:
>
> Add headers_install as a dependency to kselftest targets so that they
> can be run directly from the top of the tree.  The kselftest Makefile
> used to try to call headers_install "backwards" but failed due to the
> relative path not being consistent.
>
> Now we can either run this directly:
>
>   $ make O=build kselftest-all
>
> or this:
>
>   $ make O=build headers_install
>   $ make O=build -C tools/testing/selftest all
>
> The same commands work as well when building directly in the source
> tree (no O=) or any arbitrary path (relative or absolute).
>
> Signed-off-by: Guillaume Tucker <guillaume.tucker@...labora.com>
> ---
>  Makefile | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index 1a6678d817bd..afc9d739ba44 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1347,10 +1347,10 @@ tools/%: FORCE
>  # Kernel selftest
>
>  PHONY += kselftest
> -kselftest:
> +kselftest: headers_install
>         $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests

Nit.
Please use 'headers' for in-kernel use of exportedI headers.

kselftest: headers


>
> -kselftest-%: FORCE
> +kselftest-%: headers_install FORCE
>         $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $*

Ditto.

kselftest-%: headers FORCE


>
>  PHONY += kselftest-merge
> --
> 2.30.2
>


-- 
Best Regards
Masahiro Yamada