linux-kernel - Re: [PATCH 2/8] um: Do not use SUBARCH

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Message-ID: <CALkWK0=6ThJtdu_tqqQFisJSFGE=bfsXAzEo+Yys7wjQS_eYCw@mail.gmail.com>
Date:	Thu, 26 Sep 2013 19:27:27 +0530
From:	Ramkumar Ramachandra <artagnon@...il.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	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>,
	LKML <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: [PATCH 2/8] um: Do not use SUBARCH

Geert Uytterhoeven wrote:
> Sorry for chiming in, but... what about cross compiling?
> SUBARCH=x86 should give you a 32-bit ia32 kernel, right?

User-Mode Linux only supports two host architectures (called $SUBARCH)
at the moment: i386 and x86_64. If you leave out the $SUBARCH on
either an i386 or x86_64 machine, my patch will automatically pick the
$(uname -m) architecture to build with. To cross-compile, specify the
$SUBARCH explicitly.
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