linux-kernel - Re: [2.6 patch] re-add -ffreestanding

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Message-ID: <20060821222412.GS11651@stusta.de>
Date:	Tue, 22 Aug 2006 00:24:12 +0200
From:	Adrian Bunk <bunk@...sta.de>
To:	Andi Kleen <ak@...e.de>
Cc:	linux-kernel@...r.kernel.org, Roman Zippel <zippel@...ux-m68k.org>
Subject: Re: [2.6 patch] re-add -ffreestanding

On Tue, Aug 22, 2006 at 12:09:03AM +0200, Andi Kleen wrote:
> On Mon, 21 Aug 2006 23:46:36 +0200
> Adrian Bunk <bunk@...sta.de> wrote:
> 
> > On Mon, Aug 21, 2006 at 11:24:44PM +0200, Andi Kleen wrote:
> > > On Mon, 21 Aug 2006 23:21:54 +0200
> > > Adrian Bunk <bunk@...sta.de> wrote:
> > > 
> > > > I got the following compile error with gcc 4.1.1 when trying to compile 
> > > > kernel 2.6.18-rc4-mm2 for m68k:
> > > 
> > > I object to this change. -ffreestanding shouldn't be forced on everybody
> > 
> > Why?
> 
> Because -ffreestanding does the the wrong thing(tm) for the x86-64 
> string implementation (which I plan to extend at some point to i386
> too BTW). Don't argue with it -- what counts is not the name,
> but the semantics.

It disables the automatic usage of builtins which is OK.

Which other semantics does it have that is causing problems?

> -Andi

cu
Adrian

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