linux-kernel - Re: [RFC PATCH] Kconfig: Enable Kconfig fragments to be used for defconfig

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Message-ID: <AANLkTinyFBTKYaryFANYheTuP-biJUws2x01NRNZPb4M@mail.gmail.com>
Date:	Fri, 16 Jul 2010 11:57:55 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	linuxppc-dev@...ts.ozlabs.org, Nicolas Pitre <nico@...xnic.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Russell King <rmk@....linux.org.uk>,
	Tony Lindgren <tony@...mide.com>,
	Daniel Walker <dwalker@...eaurora.org>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [RFC PATCH] Kconfig: Enable Kconfig fragments to be used for 
	defconfig

On Fri, Jul 16, 2010 at 10:03 AM, Catalin Marinas
<catalin.marinas@....com> wrote:
> On Wed, 2010-07-14 at 00:04 +0100, Grant Likely wrote:
>> - It still doesn't resolve dependencies.  A solver would help with this.
>>   For the time being I work around the problem by running the generated
>>   config through 'oldconfig' and looking for differences.  If the files
>>   differ (ignoring comments and generateconfig_* options) after oldconfig,
>>   then the <board>_defconfig target returns a failure.  (but leaves the
>>   new .config intact so the user can resolve it with menuconfig).  This
>>   way at least the user is told when a Kconfig fragment is invalid.
>
> It's not a solver but I'm pushing a patch to warn on selecting symbols
> with unmet dependencies so that you can select further symbols (manual
> solving). The patch is in linux-next but you also can grab it from:
>
> http://git.kernel.org/?p=linux/kernel/git/cmarinas/linux-2.6-cm.git;a=commitdiff_plain;h=5d87db2d2a332784bbf2b1ec3e141486f4d41d6f

sfr and I were talking about your patch the other day.  Just warning
on incomplete dependencies is enough to make it actually workable for
me (without my ugly post-processing step).  I was very happy to hear
that it is in linux-next.

Last missing piece is being able to do "select FOO = n", which Stephen
is currently working on.

g.
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