linux-kernel - Re: [PATCH 0/11 v3] enable "make ARCH=x86"

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Date:	Sat, 10 Nov 2007 17:44:47 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Sam Ravnborg <sam@...nborg.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 0/11 v3] enable "make ARCH=x86"

On Sat, Nov 10, 2007 at 03:24:53AM -0500, Jeff Garzik wrote:
> Paul Mundt wrote:
> >This is one of the things I've been wondering about with an sh/sh64
> >unification, as we have no option but having completely different
> >toolchains, and CONFIG_64BIT=y won't work there when they are both
> >using a 32-bit ABI.
> 
> 
> IMO it seems like you ought to be able to do
> 
> 	make ARCH=sh
> 		or
> 	make ARCH=sh64
> 
> and have it do the right thing.  Ditto for ppc/ppc64, etc.
> 
> Sane, straightforward, simple, consistent with existing practice...
> 
Indeed, that's what I was intending on keeping around as a convention,
and simply overloading SRCARCH for the sh64 case. i386/x86_64 potentially
has the same issue though, and if the intent is to have a single ARCH for
both of them, I don't see how that would possibly work without
sacrificing randconfig.. unless the intended x86 convention is that one
compiler will happily handle both i386 and x86_64 without any difficulty?

The idea of a single SRCARCH and differing ARCHs for adjusting the build
semantics as we have now is quite straightforward and seems clean enough
without pushing for ARCH unification.
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