linux-kernel - Re: diet-kconfig: a script to trim unneeded kconfigs

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Message-ID: <70318cbf0809231240i19b2fa1fq7336cad1caac88ab@mail.gmail.com>
Date:	Tue, 23 Sep 2008 12:40:40 -0700
From:	"Chris Li" <lkml@...isli.org>
To:	"Takashi Iwai" <tiwai@...e.de>
Cc:	"Giacomo A. Catenazzi" <cate@...eee.net>,
	"Mauro Carvalho Chehab" <mchehab@...radead.org>,
	"Steven Rostedt" <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org
Subject: Re: diet-kconfig: a script to trim unneeded kconfigs

On Tue, Sep 23, 2008 at 11:50 AM, Takashi Iwai <tiwai@...e.de> wrote:
> Well, it is not so easy, too.
> The good-working reverse selection with dependency checks is a
> feature we've long for in Kconfig, but it hasn't been implemented
> because it could easily introduce a messy dependency loop, or some
> cases are not easily resolvable.

What I describe is a simpler version of that. The key difference is that,
I only work out the dependency base on a distro config file. So there
is only one set of config value to generate a module instead of many
combo in the more general case. I think that will cover 80 percent of
what user want. If you have a known all config file, the reverse selection
is easy resolvable.

>
> Anyway, the development of reverse-selection should involve with Sam
> and other Kbuild maintainer/developers.

Care to CC them? I think most likely you need to touch the current
kconf for "make diet" any way.

Thanks

Chris
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