linux-kernel - Re: [PATCH 1/1] kbuild: deb-pkg: Allow parallel build

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Message-ID: <CAK7LNARd8rQdwauAvgSo-+wxv=rU-4tTCtrzRJ2uhgWRrt6Xxw@mail.gmail.com>
Date:   Tue, 14 Mar 2023 02:59:33 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Bastian Germann <bage@...utronix.de>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] kbuild: deb-pkg: Allow parallel build

On Tue, Mar 14, 2023 at 2:10 AM Bastian Germann <bage@...utronix.de> wrote:
>
> Currently, the only way to build the deb-pkg generated package parallely
> is adding -jN to the MAKEFLAGS environment variable. The package ignores
> the usual parallel build option that is described in Debian Policy §4.9.1.



"dpkg-buildpackage -b -j16" worked for me.







> Derive make's -j parameter from the DEB_BUILD_OPTIONS environment variable
> that ends up being set by Debian's build tools.
>
> Link: https://www.debian.org/doc/debian-policy/ch-source.html
> Signed-off-by: Bastian Germann <bage@...utronix.de>
> ---
>  scripts/package/deb-build-option | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/scripts/package/deb-build-option b/scripts/package/deb-build-option
> index b079b0d121d4..dd170e2b3018 100755
> --- a/scripts/package/deb-build-option
> +++ b/scripts/package/deb-build-option
> @@ -7,6 +7,12 @@ if [ -z "${CROSS_COMPILE}${cross_compiling}" -a "${DEB_HOST_ARCH}" != "${DEB_BUI
>         echo CROSS_COMPILE=${DEB_HOST_GNU_TYPE}-
>  fi
>
> +for build_opt in $DEB_BUILD_OPTIONS; do
> +       if [ "${build_opt#parallel=}" != "$build_opt" ]; then
> +               echo -j${build_opt#parallel=}
> +       fi
> +done
> +
>  version=$(dpkg-parsechangelog -S Version)
>  version_upstream="${version%-*}"
>  debian_revision="${version#${version_upstream}}"
> --
> 2.39.2
>


-- 
Best Regards
Masahiro Yamada