linux-kernel - Re: huge gcc 4.1.{0,1} _

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Message-Id: <20080501153349.f4537ec7.akpm@linux-foundation.org>
Date:	Thu, 1 May 2008 15:33:49 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	bunk@...nel.org, venkatesh.pallipadi@...el.com,
	davem@...emloft.net, trini@...nel.crashing.org, mingo@...e.hu,
	tglx@...utronix.de, hpa@...or.com, linux-kernel@...r.kernel.org,
	suresh.b.siddha@...el.com, Vegard Nossum <vegard.nossum@...il.com>
Subject: Re: huge gcc 4.1.{0,1} __weak problem

On Thu, 1 May 2008 15:27:26 -0700 (PDT)
Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> 
> 
> On Thu, 1 May 2008, Andrew Morton wrote:
> > > 
> > > I see only the following choices:
> > > - remove __weak and replace all current usages
> > > - move all __weak functions into own files, and ensure that also happens
> > >   for future usages
> > > - #error for gcc 4.1.{0,1}
> > 
> > Can we detect the {0,1}?  __GNUC_EVEN_MORE_MINOR__?
> 
> It's __GNUC_PATCHLEVEL__, I believe.
> 
> So yes, we can distinguish 4.1.2 (good, and very common) from 4.1.{0,1} 
> (bad, and rather uncommon).
> 
> And yes, considering that 4.1.1 (and even more so 4.1.0) should be rare to 
> begin with, I think it's better to just not support it.
> 

Drat.  There go my alpha, i386, m68k, s390, sparc and powerpc
cross-compilers.  Vagard, save me!

Meanwhile I guess I can locally unpatch that patch.


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