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

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Message-Id: <200808041635.11854.arnd@arndb.de>
Date:	Mon, 4 Aug 2008 16:35:11 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Greg Ungerer <gerg@...pgear.com>, Sam Ravnborg <sam@...nborg.org>,
	linux arch <linux-arch@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux/m68k <linux-m68k@...r.kernel.org>
Subject: Re: kbuild now support arch/$ARCH/include - time for ARCHs to convert

On Sunday 03 August 2008, Geert Uytterhoeven wrote:
> There seem to be 3 classes of m68knommu header files:
>   1. Plain files (some of them may be (nearly) identical copies of the
>      m68k variants,

For reference, I found the files auxvec.h, device.h, emergency-restart.h,
futex.h, ioctl.h, irq_regs.h, kdebug.h, mutex.h and topology.h to be
entirely identical, so you may remove the m68knommu variants with your
approach.

>   2. Files that just include the m68k variant,
>   3. Files that include the m68k variant and do something more (pci.h and
>      setup.h).
>
> Since I don't think we want to do the m68k/m68knommu merge right now
> (Sorry Arnd, I'll keep your script in mind anyway!), the simplest way is to:
>  - Remove all files from class 2, and add to the Makefile:

Does this work with the exported headers? I guess it should if you
always use the m68k exports for m68knommu as well, but if that's
possible is is a question you haven't answered yet.

Right now, you would remove the following exported headers from m68knommu:
auxvec.h, errno.h, fcntl.h, ioctl.h, ioctls.h, ipcbuf.h, mman.h, msgbuf.h,
poll.h, posix_types.h, resource.h, sembuf.h, shmbuf.h, socket.h, stat.h,
statfs.h, termbits.h.

If you don't want to use the m68k exports on m68knomu, you'd also have
to duplicate all these.

	Arnd <><
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