linux-kernel - Re: [PATCH] kconfig: store default ARCH in .config

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Message-ID: <CAMuHMdWUpqz0W_znrrm2Qp+QjKExQ5Gcv0OsuA4gJa1Wvjv06A@mail.gmail.com>
Date:	Sun, 6 Jul 2014 11:08:27 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Paul Bolle <pebolle@...cali.nl>
Cc:	Konstantin Khlebnikov <koct9i@...il.com>,
	Michal Marek <mmarek@...e.cz>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] kconfig: store default ARCH in .config

On Sun, Jul 6, 2014 at 11:05 AM, Paul Bolle <pebolle@...cali.nl> wrote:
> On Sun, 2014-07-06 at 12:02 +0400, Konstantin Khlebnikov wrote:
>> This patch makes cross-compilation configuration fully statefull.
>> Default ARCH is stored in .config as CONFIG_DEFAULT_ARCH.
>> After initial configuration specifying ARCH= is no longer required.
>>
>> To avoid recursion it is read directly from .config using scritps/config
>> because include/config/auto.conf is not yet included at this point.
>>
>> Signed-off-by: Konstantin Khlebnikov <koct9i@...il.com>
>> ---
>
> It this needed because the Kconfig symbol ARCH is set only if ARCH is
> set in the environment?
>
> Could the same result be had by saving CONFIG_ARCH in .config (I suppose
> it actually already is) and then use its value on builds with

No, currently it's not saved in .config, so I guess that's why this convoluted
approach is needed.

> that .config unless ARCH is specified in the environment again? Ie,
> change the "option env=[...]" semantics a bit, perhaps by special casing
> CONFIG_ARCH.

Indeed.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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