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Message-ID: <472FB9A8.6050007@zytor.com>
Date: Mon, 05 Nov 2007 16:47:36 -0800
From: "H. Peter Anvin" <hpa@...or.com>
To: Guillaume Chazarain <guichaz@...oo.fr>
CC: Sam Ravnborg <sam@...nborg.org>, Roland Dreier <rdreier@...co.com>,
Christoph Hellwig <hch@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
LKML <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] replace "make ARCH=i386/x86_64 with make ARCH=x86"
Guillaume Chazarain wrote:
> On 11/6/07, H. Peter Anvin <hpa@...or.com> wrote:
>> The issue with "make allyesconfig" concerns me, although the same
>> situation already exists with any multiple-choice configuration. What I
>> guess we really want is to be able to specify a few specific choices.
>
> I don't know enough about Kbuild to know if it's possible or not, but I
> would find it great if the *config targets could take CONFIG_ variables
> on the command line, like:
>
> make oldconfig CONFIG_SMP=y
>
> If it's not possible, why not inherit the CONFIG_ options from environment
> variables, like we already do for $CFLAGS, but only at make *config
> time in this case?
>
It probably can only be done at *config time (and probably *should* only
be done at *config time); but it seems like it would be a
straightforward addition to Kconfig to look in the environment for
variables named CONFIG_* just like it'd look in an old config file.
That would definitely resolve a lot of issues.
-hpa
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