Kernel with "device acpi" doesnt compile

[Rumko]

When trying to compile a kernel with "device acpi" I get this:

sh /usr/src/sys/conf/newvers.sh MYPRECIOUS
cc -c -O -pipe -mtune=pentiumpro -Wall -Wredundant-decls
-Wnested-externs -Wstrict-prototypes  -Wmissing-prototypes
-Wpointer-arith -Winline -Wcast-qual  -ansi -g -nostdinc -I.
-I/usr/src/sys -I/usr/src/sys/../include
-I/usr/obj/usr/src/sys/MYPRECIOUS -I"/usr/src/sys/dev/acpica5"
-I"/usr/src/sys/contrib/dev/acpica-unix-20050309/include"
-I/usr/src/sys/contrib/ipfilter  -D_KERNEL -include opt_global.h
-mpreferred-stack-boundary=2 -fno-stack-protector -fno-common
-ffreestanding  vers.c
linking kernel.debug
acpi.o(.text+0x1a65): In function `acpi_shutdown_final':
/usr/src/sys/dev/acpica5/acpi.c:1212: undefined reference to
`cpu_idle_default_hook'
*** Error code 1

Stop in /usr/obj/usr/src/sys/MYPRECIOUS.
*** Error code 1

The kernel config file is at http://84.52.171.132/MYPRECIOUS