make depend fails with 5.0

["rvargh jo" <rvargh1%gmail.com@localhost>]

I have installed NetBSD 4.0.1 on a X86 box. I tried to build a 5.0
beta kernel source inside the box .

First of all i cant find build.sh script in my machine . So i opted
for manual building with config .

# config GENERIC
Build directory is ../compile/GENERIC
Don't forget to run "make depend"
# cd ../compile/GENERIC

# make depend
depending the kern library objects
make: don't know how to make cpuset.c. Stop

make: stopped in /usr/src/sys/arch/i386/compile/GENERIC/lib/kern
*** Error code 2

Stop.
make: stopped in /usr/src/sys/arch/i386/compile/GENERIC


Could some one help me on this ?

what else i have to do for getting the build.sh script ?