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Date: Tue, 31 Oct 2000 00:45:00 +0100
From: Christoph Hellwig <hch@ns.caldera.de>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Jeff Garzik <jgarzik@mandrakesoft.com>, linux-kernel@vger.kernel.org,
        Keith Owens <kaos@ocs.com.au>
Subject: Re: test10-pre7
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In-Reply-To: <Pine.LNX.4.10.10010301536340.3595-100000@penguin.transmeta.com>; from torvalds@transmeta.com on Mon, Oct 30, 2000 at 03:40:24PM -0800
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On Mon, Oct 30, 2000 at 03:40:24PM -0800, Linus Torvalds wrote:
> 
> 
> On Tue, 31 Oct 2000, Christoph Hellwig wrote:
> > 
> > It is simple - but a change in _every_ makefile is required.
> > And it is not really needed for old-style makefiles.
> 
> Actually, you don't have to change every makefile, because you CAN do this
> all with a simple backwards-compatibility layer, something like:
> 
> 	OXONLY = $(filter-out $(O_OBJS), $(OX_OBJS))
> 	ALL_O = $(OXONLY) $(O_OBJS)
> 
> which is a no-op for a "proper" makefile that follows the new rules
> (OXONLY will be empty, because all OX_OBJS files will be part of O_OBJS),
> but it will make old-style stuff act the same..

Ok, that should do the job - but it is horribly ugly ...

> I'd actually prefer to just change every Makefile, but hey, I think
> something like the above (untested) would make them work unmodified too.

But when we are changing makefiles everywhere - why not do the proper think
and let the new-style makefiles share their code?

(I have a patch ready - it just needs some forward-porting and testing)

	Christoph

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