linux-kernel - Re: [RFC] Get rid of SUBARCH

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Message-Id: <1377204069.2737.108@driftwood>
Date:	Thu, 22 Aug 2013 15:41:09 -0500
From:	Rob Landley <rob@...dley.net>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Sam Ravnborg <sam@...nborg.org>,
	Richard Weinberger <richard@....at>,
	Linux-Arch <linux-arch@...r.kernel.org>,
	Michal Marek <mmarek@...e.cz>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	Jeff Dike <jdike@...toit.com>,
	Guan Xuetao <gxt@...c.pku.edu.cn>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-m68k <linux-m68k@...ts.linux-m68k.org>,
	Linux MIPS Mailing List <linux-mips@...ux-mips.org>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>
Subject: Re: [RFC] Get rid of SUBARCH

On 08/22/2013 07:58:26 AM, Geert Uytterhoeven wrote:
> On Wed, Aug 21, 2013 at 9:51 PM, Sam Ravnborg <sam@...nborg.org>  
> wrote:
> >> > The series touches also m68k, sh, mips and unicore32.
> >> > These architectures magically select a cross compiler if ARCH !=  
> SUBARCH.
> >> > Do really need that behavior?
> >>
> >> This does remove functionality.
> >> It allows to build a kernel using e.g. "make ARCH=m68k".
> >>
> >> Perhaps this can be moved to generic code? Most (not all!)  
> cross-toolchains
> >> are called $ARCH-{unknown-,}linux{,-gnu}.
> >> Exceptions are e.g. am33_2.0-linux and bfin-uclinux.
> >
> > Today you can specify CROSS_COMPILE in Kconfig.
> > With this we should be able to remove these hacks.
> 
> The correct CROSS_COMPILE value depends on the host environment, not
> on the target configuration.

Actually it depends on _both_.

Rob--
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