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

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Message-ID: <AANLkTikqHnyFVJF0Pzwy2xtKeNSXYAPFdPkAkLiXK8Ls@mail.gmail.com>
Date:	Fri, 16 Jul 2010 11:46:17 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Nicolas Pitre <nico@...xnic.net>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Grant Likely <grant.likely@...retlab.ca>,
	Catalin Marinas <catalin.marinas@....com>,
	linuxppc-dev@...ts.ozlabs.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linux-kbuild@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org,
	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 11:40 AM, Nicolas Pitre <nico@...xnic.net> wrote:
>
> DOH.

Well, it's possible that the correct approach is a mixture.

Automatically do the trivial cases (recursive selects, dependencies
that are simple or of the form "x && y" etc), and warn about the cases
that aren't trivial (where "not trivial" may not necessarily be about
fundamentally ambiguous ones, but just "complex enough that I won't
even try").

Maybe a full "solver" is unnecessary, for example, but just a simple
"automatically enable the direct dependencies and scream when it's not
simple any more" would take care of 99% of the common cases, and then
warn when it needs some manual help.

So it's not a strict "one or the other" issue. The solution could be
"some of both".

                     Linus
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