linux-kernel - Re: [PATCH] kbuild: Disallow GCC 4.1.0 / 4.1.1

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Message-ID: <20090102185148.GI28946@ZenIV.linux.org.uk>
Date:	Fri, 2 Jan 2009 18:51:48 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Sam Ravnborg <sam@...nborg.org>, Ingo Molnar <mingo@...e.hu>,
	David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>, rdreier@...co.com,
	ian.campbell@...rix.com, jeremy.fitzhardinge@...rix.com,
	deller@....de, rusty@...tcorp.com.au, linux-parisc@...r.kernel.org,
	linux-kernel@...r.kernel.org, kyle@...artin.ca, randolph@...sq.org,
	dave@...uly1.hia.nrc.ca
Subject: Re: [PATCH] kbuild: Disallow GCC 4.1.0 / 4.1.1

On Fri, Jan 02, 2009 at 10:04:27AM -0800, Linus Torvalds wrote:
> 
> 
> On Fri, 2 Jan 2009, Sam Ravnborg wrote:
> > 
> > Bugger....
> > Now I cannot do cross compile for: alpha, arm, m68k and sparc.
> > 
> > Not that I actually try to run these beasts but just being able
> > to do cross compile has served me well.
> 
> We _could_ make a "CONFIG_COMPILE_ONLY" check, but wouldn't it be even 
> nicer to make sure the cross-compiles are something that might actually be 
> expected to work?
> 
> I realize that cross-tools tend to lag a bit - the pressure to maintain 
> them tends to be much lower - but I was sure we had somebody who did a 
> reasonable cross-compiler toolchain. Is gcc-4.1 really the most modern 
> thing that is easily available?

FWIW, I'm using 4.3 on all targets at the moment.  See
git://git.kernel.org/pub/scm/linux/kernel/git/viro/toolchain.git/
for fedora-based variant of that sucker.  And yes, it does include
cross-to-sparc; all but sh/sh64, in fact (sh had serious compiler
breakage around 4.3.0 and backporting from -HEAD was far beyond
what I considered reasonable at that point).
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