linux-kernel - Re: [PATCH] [1/3] KBUILD: Add script to manipulate .config files on the command line

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Date:	Sat, 3 Jan 2009 11:54:44 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kbuild@...r.kernel.org, sam@...nborg.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [1/3] KBUILD: Add script to manipulate .config files on the command line

On Saturday 03 January 2009, Andi Kleen wrote:
> 
> I often change single options in .config files. Instead of using
> an editor or one of the frontends it's convenient to do this from
> the command line. It's also useful to do from automated build scripts
> when building different variants from a base config file.
> 
> I extracted most of the CONFIG manipulation code from one of my
> build scripts into a new shell script scripts/config

This looks very useful, thanks for sharing.

> The script is not integrated with the normal Kconfig machinery
> and doesn't do any checking against Kconfig files, but just manipulates
> that text format. This is always done at make time anyways.

Why? I would imagine it to be useful to get immediate feedback
whether changing the option was successful. It should be easy to
run scripts/kconfig/conf -o on the config file afterwards.

My normal workflow when changing single options is to remove the
line from .config and call make oldconfig again. What I would
like to see most here is something like

./scripts/config --reconfigure smp
Remove SMP from .config, and do oldconfig to ask again.

	Arnd <><
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