linux-kernel - Re: [PATCH] [Repost without wordwrapping] Merge m68k and m68knommu

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Date:	Wed, 18 Nov 2009 22:32:25 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Steven King <sfking00@...oo.com>
Cc:	linux-kernel@...r.kernel.org, linux-m68k@...r.kernel.org,
	uclinux-dev@...inux.org, Greg Ungerer <gerg@...pgear.com>,
	Roman Zippel <zippel@...ux-m68k.org>
Subject: Re: [PATCH] [Repost without wordwrapping] Merge m68k and m68knommu

On Mon, Oct 19, 2009 at 00:55, Steven King <sfking00@...oo.com> wrote:
> This is a script and patch to merge the m68knommu arch into m68k.

Thanks, nice!

> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif
>
> The patch modifies the toplevel Makefile so that ARCH=m68knommu still works
> (by setting SRCARCH=m68k) and adds the m68knommu Kconfig and Makefile
> to the m68k Kconfig and Makefile, using the definition of ARCH to select
> which values to use.

(still dreaming of my pet Amiga-nommu project) I prefer to use
CONFIG_MMU as the selector...

> Thus when building for either a m68k or an m68knommu target, one still
> specifies either ARCH=m68k or ARCH=m68knommu and everything should
> build EXACTLY as it did pre-merge.  (I think).

... using CONFIG_MMU would change this?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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