linux-kernel - Re: [PATCH] kbuild: deb-pkg: Explicitly define optional user-defined variables

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Date: Sun, 16 Jun 2024 20:46:25 +0200
From: Nicolas Schier <nicolas@...sle.eu>
To: Masahiro Yamada <masahiroy@...nel.org>,
 Nathan Chancellor <nathan@...nel.org>
Cc: linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: deb-pkg: Explicitly define optional user-defined
 variables

On Sun, Jun 16, 2024 at 06:37:16PM +0200 Nicolas Schier wrote:
> mkdebian supports some optional environment variables for controlling
> the Debian package generation.  Declare those variables explicitly to
> allow enabling of 'set -u' (error on unset variables).
> 
> Use of ': "${VAR:=}"' for variable assignment is POSIX compatible [1].
> 
> [1]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#colon
> 
> Signed-off-by: Nicolas Schier <nicolas@...sle.eu>
> ---
>  scripts/package/mkdebian | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
> index 070149c985fe..81e81906ad07 100755
> --- a/scripts/package/mkdebian
> +++ b/scripts/package/mkdebian
> @@ -6,6 +6,18 @@
>  
>  set -e
>  
> +# Optional user-specified environment variables
> +
> +# Set target Debian architecture (skip auto-detection)
> +: "${KBUILD_DEBARCH:=}"
> +
> +# Set target Debian distribution (skipping auto-detection)
> +: "${KDEB_CHANGELOG_DIST:=}"
> +
> +# Overwrite the automatically determined package version.
> +: "${KDEB_PKGVERSION:=}"
> +
> +
>  is_enabled() {
>  	grep -q "^$1=y" include/config/auto.conf
>  }
> -- 
> 2.39.2


Please ignore, cp. https://lore.kernel.org/linux-kbuild/CAK7LNARPP_OsaOhUHT+5-vi5XJ36hDs0bNsiM7pwuAmj4S+MNg@mail.gmail.com/

Sorry for the noise.

Kind regards,
Nicolas