linux-kernel - Re: [PATCH 1/2] kbuild: asm-generic support

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Date:	Sun, 9 Jan 2011 22:24:34 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	linux arch <linux-arch@...r.kernel.org>,
	Guan Xuetao <guanxuetao@...c.pku.edu.cn>,
	Michal Marek <mmarek@...e.cz>
Subject: Re: [PATCH 1/2] kbuild: asm-generic support

On Sun, Jan 09, 2011 at 09:31:27PM +0100, Arnd Bergmann wrote:
> > There is an increasing amount of header files
> > shared between individual architectures in asm-generic.
> > To avoid a lot of dummy wrapper files that just
> > include the corresponding file in asm-generic provide
> > some basic support in kbuild for this.
> 
> Looks almost perfect to me now.
> 
> I was about to reply with Reviewed-by, but then it occurred to me
> that scripts/asm-generic.sh is really much more complicated
> than doing the same in Makefile syntax.
> 
> You already create the wrapper files during headers-install, so why
> not also create them from make, where we already have access to the
> file lists in a convenient format.
> 
> Or is there a problem getting at stuff defined in the Kbuild files
> from the prepare stage?

My main issue it that I wanted to offload functionality
from the top-level Makefile.
It contains too much weird stuff already.

I considered writing asm-generic.sh as a small
Makefile but decided for a shell script because there
are more people confident in shell scripts than in Makefile syntax.

	Sam
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