Kernel compile failure

[Steve Mynott]

Maybe not a bug but something dumb I am doing but...

With a CVS checkout of dragonfly on FreeBSD 4.8 userland builds fine but 
I have problems with 'make kernelbuild' and get the following error:-

cc -shared -nostdlib hack.c -o hack.So
rm -f hack.c
sh /usr/src/sys/conf/newvers.sh GENERIC
cc -c -O -pipe  -Wall -Wredundant-decls -Wnested-externs 
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline 
-Wcast-qual  -fformat-extensions -ansi  -nostdinc -I- -I. -I/usr/src/sys 
-I/usr/src/sys/../include -I/usr/src/sys/contrib/ipfilter  -D_KERNEL 
-include opt_global.h  -mpreferred-stack-boundary=2  vers.c
linking kernel
support.o: In function `generic_copyout':
support.o(.text+0x425): undefined reference to `_cpu_class'
support.o: In function `suword':
support.o(.text+0x89a): undefined reference to `_cpu_class'
support.o(.text+0x8ab): undefined reference to `_PTmap'
support.o(.text+0x8b7): undefined reference to `_PTmap'
support.o(.text+0x8c0): undefined reference to `_PTmap'
support.o(.text+0x8ce): undefined reference to `_trapwrite'
support.o: In function `susword':
support.o(.text+0x916): undefined reference to `_cpu_class'
support.o(.text+0x927): undefined reference to `_PTmap'
support.o(.text+0x933): undefined reference to `_PTmap'
support.o(.text+0x93c): undefined reference to `_PTmap'
support.o(.text+0x94a): undefined reference to `_trapwrite'
support.o: In function `subyte':
support.o(.text+0x99e): undefined reference to `_cpu_class'
support.o(.text+0x9af): undefined reference to `_PTmap'
support.o(.text+0x9bb): undefined reference to `_PTmap'
support.o(.text+0x9c4): undefined reference to `_PTmap'
support.o(.text+0x9d2): undefined reference to `_trapwrite'
*** Error code 1

Stop in /usr/obj/usr/src/sys/GENERIC.

-- Steve