Messages in this thread | | | Date | Mon, 9 Jun 2003 16:01:41 +0200 (CEST) | From | Jaroslav Kysela <> | Subject | Re: 2.5 kbuild: use of '-z muldefs' for LD? |
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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 <perex@suse.cz> Linux Kernel Sound Maintainer ALSA Project, SuSE Labs
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