cp -f vmnet.ko ./../vmnet.o
make: Leaving directory `/tmp/vmware-config2/vmnet-only'
Unable to make a vmnet module that can be loaded in the running kernel:
insmod: error inserting '/tmp/vmware-config2/vmnet.o': -1 Unknown symbol in module
There is probably a slight difference in the kernel configuration between the 
set of C header files you specified and your running kernel.  You may want to 
rebuild a kernel based on that directory, or specify another directory.