2.5 kbuild: use of '-z muldefs' for LD?

From: Jaroslav Kysela (perex@suse.cz)
Date: Mon Jun 09 2003 - 06:56:59 EST

Hello all,

        I am trying to figure the best solution for our problem. We reuse
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?


Jaroslav Kysela <perex@suse.cz>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs

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