Makefile for linux modules

Hi
   I have a makefile to make several driver modules:
obj-$(CONFIG_FUSION_SPI)	+= mptbase.o mptscsih.o
mptspi.o
obj-$(CONFIG_FUSION_FC)		+= mptbase.o mptscsih.o
mptfc.o
obj-m				+= mptbase.o mptscsih.o mptsas.o
obj-$(CONFIG_FUSION_LAN)	+= mptlan.o
obj-m				+= mptctl.o
obj-m                           += mptcfg.o
obj-m                       +=mptstm.o


this will compile all modules and the modules can be
installed successfully.

I need to have a comfunc.c file, which contains all
common functions, which could be used by these module
files.
I added the line below to the content just below
mptstm.o (I tried adding just above mptlan). 
mptbase-objs             := comfunc.o

All modules are compiled successfully. I can install
mptbase.ko. However, when I try to install mptctl.ko
(or other modules), I got errors like mptctl: Unknown
symbol mpt_register; mpt_deregister. These functions
are implemented in mptbase.c.

How do I fix this problem?

thanks
Robert


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