linux-kernel - Re: [PATCH 1/2] ld-version: use /usr/bin/env awk for shebank

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Message-ID: <20201209182207.GA143260@roeck-us.net>
Date:   Wed, 9 Dec 2020 10:22:07 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Dominique Martinet <asmadeus@...ewreck.org>
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] ld-version: use /usr/bin/env awk for shebank

On Tue, Dec 01, 2020 at 02:17:29PM +0100, Dominique Martinet wrote:
> /usr/bin/awk is not garanteed to exist (and doesn't on e.g. nixos),
> using /usr/bin/env to have it look in PATH is more robust
> 
> Signed-off-by: Dominique Martinet <asmadeus@...ewreck.org>
> Signed-off-by: Dominique Martinet <asmadeus@...ewreck.org>
> ---
> I've been carrying these two patchs for local kernel development on
> nixos for a while, I don't think it'd break anything for anyone so
> might as well submit these -- please consider it :)
> 
>  scripts/ld-version.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/ld-version.sh b/scripts/ld-version.sh
> index f2be0ff9a738..05476b8f8925 100755
> --- a/scripts/ld-version.sh
> +++ b/scripts/ld-version.sh
> @@ -1,4 +1,4 @@
> -#!/usr/bin/awk -f
> +#!/usr/bin/env -S awk -f

This patch results in:

/usr/bin/env: invalid option -- 'S'
Try '/usr/bin/env --help' for more information.
init/Kconfig:39: syntax error
init/Kconfig:38: invalid statement
scripts/kconfig/Makefile:80: recipe for target 'defconfig' failed

when using:

env (GNU coreutils) 8.28

or any other version of "env" which doesn't support "-S".

Guenter