linux-kernel - Re: Kbuild problem

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Message-ID: <Pine.LNX.4.44.0702180017170.1150-100000@localhost.localdomain>
Date:	Sun, 18 Feb 2007 00:22:10 -0500 (EST)
From:	Kai Germaschewski <kai.germaschewski@....edu>
To:	Tilman Schmidt <tilman@...p.cc>
cc:	Adrian Bunk <bunk@...sta.de>, Hansjoerg Lipp <hjlipp@....de>,
	gigaset307x-common@...ts.sourceforge.net, kkeil@...e.de,
	kai.germaschewski@....de, isdn4linux@...tserv.isdn4linux.de,
	linux-kernel@...r.kernel.org
Subject: Re: Kbuild problem

On Sat, 17 Feb 2007, Tilman Schmidt wrote:

> Alright, then so be it. But that raises another question:
> asyncdata.o is only needed for M105 and M101, not for the base
> driver. How do I express in Kbuild that asyncdata.o is to be added
> to gigaset-y only if CONFIG_GIGASET_M105 and CONFIG_GIGASET_M101
> are not both 'n'?

The way this is typically done is via Kconfig. Add a config option 
ASYNCDATA (actually something more descriptive/specific would be better), 
add a "select ASYNCDATA" to the config options for m101 and m105, and then 
you can use CONFIG_ASYNCDATA to decide whether to add asyncdata.o in the 
Makefile.

--Kai


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