Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758866Ab0GPSa4 (ORCPT ); Fri, 16 Jul 2010 14:30:56 -0400 Received: from caramon.arm.linux.org.uk ([78.32.30.218]:52927 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758857Ab0GPSax (ORCPT ); Fri, 16 Jul 2010 14:30:53 -0400 Date: Fri, 16 Jul 2010 19:30:28 +0100 From: Russell King - ARM Linux To: Nicolas Pitre Cc: Grant Likely , Catalin Marinas , linuxppc-dev@lists.ozlabs.org, Benjamin Herrenschmidt , linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Linus Torvalds , Tony Lindgren , Daniel Walker , Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= , Stephen Rothwell Subject: Re: [RFC PATCH] Kconfig: Enable Kconfig fragments to be used for defconfig Message-ID: <20100716183028.GB26854@n2100.arm.linux.org.uk> References: <20100713230352.6781.18644.stgit@angua> <1279296221.17878.66.camel@e102109-lin.cambridge.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1022 Lines: 25 On Fri, Jul 16, 2010 at 02:19:31PM -0400, Nicolas Pitre wrote: > For example, if I want CONFIG_MTD_CMDLINE_PARTS=y, the system may be > smart enough to notice and automatically enable CONFIG_MTD and > CONFIG_MTD_PARTITIONS without having to carry those in the defconfig. How do you sort out something like this: config FOO bool "Foo" depends on (A && B) || C Do you enable A and B, A, B and C or just C? Bear in mind that A could be 'X86', 'M68K' or any other arch specific symbol. I prefer the warning method because it prompts you to investigate what's changed and sort out the problem by ensuring that the appropriate symbols are also selected. The automatic selection of dependencies method carries the risk that it'll do the wrong thing with the above scenario. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/