linux-kernel - Re: [PATCH] kbuild: deb-pkg: Fix build error caused by lack of positionnal argument

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Message-ID: <86sew93an9.wl-maz@kernel.org>
Date: Tue, 16 Jul 2024 11:15:54 +0100
From: Marc Zyngier <maz@...nel.org>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: linux-kernel@...r.kernel.org,
	Nicolas Schier <nicolas@...sle.eu>
Subject: Re: [PATCH] kbuild: deb-pkg: Fix build error caused by lack of positionnal argument

On Tue, 16 Jul 2024 08:06:06 +0100,
Masahiro Yamada <masahiroy@...nel.org> wrote:
> 
> On Thu, Jul 11, 2024 at 2:27 AM Marc Zyngier <maz@...nel.org> wrote:
> >
> > Since 8ef052389f7f ("kbuild: package: add -e and -u options to some
> > shell scripts"), building a debian package on my arm64 box fails:
> >
> > $ make -j20 bindeb-pkg
> >   UPD     include/config/kernel.release
> >   GEN     debian
> > ./scripts/package/mkdebian: 138: 1: parameter not set
> > make[2]: *** [scripts/Makefile.package:98: debian] Error 2
> > make[1]: *** [/home/maz/hot-poop/arm-platforms/Makefile:1538: bindeb-pkg] Error 2
> > make: *** [Makefile:224: __sub-make] Error 2
> >
> > Applying the same pattern for substitution of undefined variables
> > seems to paper over the issue and brings the script back to life.
> >
> > Fixes: 8ef052389f7f ("kbuild: package: add -e and -u options to some shell scripts")
> > Signed-off-by: Marc Zyngier <maz@...nel.org>
> > Cc: Masahiro Yamada <masahiroy@...nel.org>
> > Cc: Nicolas Schier <nicolas@...sle.eu>
> > ---
> >  scripts/package/mkdebian | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
> > index 196b14e8ad47..de8b460a46b4 100755
> > --- a/scripts/package/mkdebian
> > +++ b/scripts/package/mkdebian
> > @@ -135,7 +135,7 @@ else
> >  fi
> >  maintainer="${name} <${email}>"
> >
> > -if [ "$1" = --need-source ]; then
> > +if [ "${1:+set}" = --need-source ]; then
> >         gen_source
> >  fi
> >
> 
> 
> This is wrong.
> 
> It will break 'make srcdeb-pkg' because
> "set" = "--need-source" is always false.
> 
> 
> 
> I will squash the following.
> 
> 
> while [ $# -gt 0 ]; do
>     case "$1" in
>     --need-source)
>         gen_source
>         shift
>         ;;
>     *)
>         break
>         ;;
>     esac
> done
> 
> 
> Thanks for the report.

This seems to work for me.

	M.

-- 
Without deviation from the norm, progress is not possible.