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	Tue, 5 Aug 2008 16:44:13 -0400
Date: Tue, 5 Aug 2008 22:44:26 +0200
From: Sam Ravnborg <sam@ravnborg.org>
Subject: Re: How to separate obj and src for external module build?
Message-ID: <20080805204426.GC5464@uranus.ravnborg.org>
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To: Qian_Riny@emc.com
Cc: linux-kbuild@vger.kernel.org

On Tue, Aug 05, 2008 at 04:47:44AM -0400, Qian_Riny@emc.com wrote:
> Hi,
> 
> I want to put all obj files (*.o, *.ko etc) into a different directory
> (e.g. obj/) 
> rather than the same src (*.c, Makefile) directory while building an
> external module:
> $(MAKE) -C $(KERNELDIR) M=$(SRC) modules
> How to do it?
> 
> I tried to use O (KBUILD_OUTPUT), but still no luck. It seems that
> O (KBUILD_OUTPUT) is just used for kernel build output.
> 
> $(MAKE) -C $(KERNELDIR) M=$(SRC) O=$(OBJ) modules
> It doesn't work.

This is not yet supported by kbuild and I have no plans to look
into it at the moment.

	Sam