On Mon, 9 Jun 2003, Christoph Hellwig wrote:
> On Mon, Jun 09, 2003 at 01:56:59PM +0200, Jaroslav Kysela wrote:
> > one object file for more targets. Example:
> >
> > ------
> > snd-ice1712-objs := ice1712.o delta.o hoontech.o ews.o ak4xxx.o
> > snd-ice1724-objs := ice1724.o amp.o revo.o aureon.o ak4xxx.o
> >
> > # Toplevel Module Dependency
> > obj-$(CONFIG_SND_ICE1712) += snd-ice1712.o
> > obj-$(CONFIG_SND_ICE1724) += snd-ice1724.o
> > ------
> >
> > The ak4xxx.o module is shared and has defined a few public functions.
> > Unfortunately, the default build-in.o rule fails when targets are
> > requested to be included into the solid kernel because the public
> > functions are duplicated in snd-ice1712.o and snd-ice17124.o.
> >
> > I can instruct the ld compiler to ignore the multiple definitions using
> > '-z muldefs':
> >
> > EXTRA_LDFLAGS = -z muldefs
> >
> > But it seems like a hack for me.
> > Does anybody have another idea to solve my problem?
>
> Move ak4xxx.o out of the multi-obj rules. Just declare a new helper-
> config option CONFIG_SND_AK4XXX that gets defined by all drivers
> using it and add
>
> obj-$(CONFIG_SND_AK4XXX) += ak4xxx.o
>
> You'll just have to make sure to export all symbols in 2.5
But this solution will create a new kernel module. The shared code is
really small and having small codes in separated modules is waste of
memory in my eyes.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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