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

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Message-ID: <20090102182915.GA6143@uranus.ravnborg.org>
Date:	Fri, 2 Jan 2009 19:29:15 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	David Miller <davem@...emloft.net>, 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 07:22:48PM +0100, Ingo Molnar wrote:
> 
> * Sam Ravnborg <sam@...nborg.org> wrote:
> 
> > > And it all looks more logical too, imho.
> > 
> > Bugger....
> > Now I cannot do cross compile for: alpha, arm, m68k and sparc.
> 
> hm, i just did a successful cross-build from x86 to alpha:
> 
>   KSYM    .tmp_kallsyms2.S
>   AS      .tmp_kallsyms2.o
>   LD      vmlinux
>   SYSMAP  System.map
>   SYSMAP  .tmp_System.map
> 
>   phoenix:~/linux/linux> head -6 /dev/shm/tip/build/.config 
>   #
>   # Automatically generated make config: don't edit
>   # Linux kernel version: 2.6.28
>   # Fri Jan  2 19:28:14 2009
>   #
>   CONFIG_ALPHA=y
> 
> with these commits present:
> 
>   f9d1425: Disallow gcc versions 4.1.{0,1}
>   f153b82: Sanitize gcc version header includes
> 
> what type of cross-build breakage do they cause?

The default gcc made by demo-alpha with crosstool is version 4.1.0:

 /opt/crosstool/gcc-4.1.0-glibc-2.3.6/alpha-unknown-linux-gnu/bin/alpha-unknown-linux-gnu-gcc --version
alpha-unknown-linux-gnu-gcc (GCC) 4.1.0
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

	Sam
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