linux-kernel - Re: kbuild now support arch/$ARCH/include

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Date:	Fri, 1 Aug 2008 18:46:46 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Paul Mundt <lethal@...ux-sh.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	David Howells <dhowells@...hat.com>,
	Greg Ungerer <gerg@...pgear.com>,
	linux arch <linux-arch@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux/m68k <linux-m68k@...r.kernel.org>,
	uClinux list <uclinux-dev@...inux.org>
Subject: Re: kbuild now support arch/$ARCH/include - time for ARCHs to convert

On Fri, Aug 01, 2008 at 09:35:04AM +0200, Arnd Bergmann wrote:
> On Thursday 31 July 2008, Sam Ravnborg wrote:
> > > #ifdef __KERNEL__
> > > #ifdef CONFIG_MMU
> > > #include "${BASE}_mmu.h"
> > > #else
> > > #include "${BASE}_nommu.h"
> > > #endif
> > > #else
> > > #include "${BASE}_mmu.h"
> > > #endif
> > > EOF
> > > }
> > 
> > This will leak a CONFIG_ symbol if the header file
> > is exported. Can we do it with a gcc defined symbol?
> > [See how I did it for sparc for instance]
> 
> Is there a compiler defined symbol for this? I thought the tool
> chain was identical.

> Do you think my #ifdef __KERNEL__ does
> not do what I wanted it to do?
Was too quick here - I overlooked the ifdef so it looks good.

	Sam
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