MP Howto?

Dear Newsgroup,

when trying to build an MP Kernel on i386, make depend fails with this:
--snip--
.c  ../../../../dev/usb/ukbdmap.c ../../../../dev/usb/ums.c
../../../../dev/usb/ulpt.c  ../../../../dev/usb/umass.c ../../../../dev/usb/umass_isdata.c 
../../../../dev/usb/umass_quirks.c ../../../../dev/usb/umass_scsipi.c 
../../../../dev/usb/uirda.c ../../../../dev/usb/ustir.c ../../../../dev/usb/urio.c 
../../../../dev/usb/uvisor.c ../../../../dev/usb/uyap.c
../../../../dev/usb/udsbr.c  ../../../../dev/usb/if_aue.c ../../../../dev/usb/if_cue.c
../../../../dev/usb/if_kue.c  ../../../../dev/usb/if_upl.c ../../../../dev/usb/if_url.c
../../../../dev/usb/if_uax.c  ../../../../dev/usb/if_udav.c
../../../../dev/usb/umodem.c ../../../../dev/usb/uftdi.c  ../../../../dev/usb/uplcom.c
../../../../dev/usb/umct.c ../../../../dev/usb/uvscom.c  ../../../../dev/usb/ubsa.c
../../../../dev/usb/uscanner.c ../../../../dev/usb/usscanner.c  swapnetbsd.c
cc: Ambiguous abbreviation --
cat ../../../../arch/i386/i386/genassym.cf  |  sh
../../../../kern/genassym.sh mkdep -f assym.dep --       -ffreestanding -g -O2 -Werror -Wall -Wno-main
-Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes
-Wstrict-prototypes -Wno-sign-compare -Wno-uninitialized  -Di386 -I.  -I../../../../arch
-I../../../.. -nostdinc -DLKM -DDIAGNOSTIC -DDEBUG -DMAXUSERS=32 -D_KERNEL
-D_KERNEL_OPT
cc: Ambiguous abbreviation --
-bash-2.05b$

I downloaded the latest source. whats wrong?
Can somebody write a step-by-step howto on compiling an MP Kernel?

Thanks, Zafer.