Re: [PATCH] kbuild: Restore .version auto-increment behaviour for Debian packages

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On Wed, Nov 16, 2022 at 7:05 AM Marc Zyngier <maz@xxxxxxxxxx> wrote:
>
> Since 2df8220cc511 ("kbuild: build init/built-in.a just once"),
> generating Debian packages using 'make bindeb-pkg' results in
> packages that are stuck to the same .version, leading to unexpected
> behaviours (multiple packages with the same version).
>
> That's because the mkdebian script samples the build version
> before building the kernel, and forces the use of that version
> number for the actual build.
>
> Restore the previous behaviour by calling init/build-version
> instead of reading the .version file. This is likely to result
> in too many .version bumps, but this is what was happening before
> (although the bump was affecting builds made after the current one).


What do you mean by "too many .version bumps"?

Every "make bindeb-pkg" increments the version by one.

Is there any case where it increases more?





> Eventually, this script should be turned into something that
> is a bit less counter-intuitive (building the kernel first
> and only then generating the packaging artefacts).


How to achieve this?

The version is recorded in debian/chanegelog.
Without it, dpkg-buildpackage fails.

In my understanding, the version must be fixed before building the kernel.








>
> Fixes: 2df8220cc511 ("kbuild: build init/built-in.a just once")
> Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
> Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
> Cc: Michal Marek <michal.lkml@xxxxxxxxxxx>
> Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> ---
>
> Notes:
>     v2: Drop the RPM version which was wrong, and make the path
>         relative to $srctree.
>
>  scripts/package/mkdebian | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
> index 60a2a63a5e90..a3ac5a716e9f 100755
> --- a/scripts/package/mkdebian
> +++ b/scripts/package/mkdebian
> @@ -90,7 +90,7 @@ if [ -n "$KDEB_PKGVERSION" ]; then
>         packageversion=$KDEB_PKGVERSION
>         revision=${packageversion##*-}
>  else
> -       revision=$(cat .version 2>/dev/null||echo 1)
> +       revision=$($srctree/init/build-version)
>         packageversion=$version-$revision
>  fi
>  sourcename=$KDEB_SOURCENAME
> --
> 2.34.1
>


--
Best Regards
Masahiro Yamada



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