[FreeBSD 8-CURRENT] compile error

cc -c -O2 -frename-registers -pipe -fno-strict-aliasing -march=nocona
-std=c99 -g -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual  -Wundef -Wno-pointer-sign -fformat-extensions -nostdinc
-I.  -I/usr/src/sys -I/usr/src/sys/contrib/altq -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common
-finline-limit=8000 --param inline-unit-growth=100 --param
large-function-growth=1000  -fno-omit-frame-pointer -mcmodel=kernel
-mno-red-zone  -mfpmath=387 -mno-sse -mno-sse2 -mno-sse3 -mno-mmx
-mno-3dnow  -msoft-float -fno-asynchronous-unwind-tables
-ffreestanding -fstack-protector -Werror  vers.c
linking kernel.debug
if_plip.o(.text+0x331): In function `lpstop':
/usr/src/sys/dev/ppbus/if_plip.c:352: undefined reference to
`_ppb_assert_locked'
if_plip.o(.text+0x346): In function `lpstop':
./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x351):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x365):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x446): In function `lpioctl':
/usr/src/sys/dev/ppbus/if_plip.c:433: undefined reference to `ppb_lock'
if_plip.o(.text+0x483):/usr/src/sys/dev/ppbus/if_plip.c:438: undefined
reference to `ppb_unlock'
if_plip.o(.text+0x506):/usr/src/sys/dev/ppbus/if_plip.c:422: undefined
reference to `ppb_lock'
if_plip.o(.text+0x528):/usr/src/sys/dev/ppbus/if_plip.c:429: undefined
reference to `ppb_unlock'
if_plip.o(.text+0x577):/usr/src/sys/dev/ppbus/if_plip.c:370: undefined
reference to `_ppb_assert_locked'
if_plip.o(.text+0x584):/usr/src/sys/dev/ppbus/if_plip.c:371: undefined
reference to `ppb_request_bus'
if_plip.o(.text+0x594):/usr/src/sys/dev/ppbus/if_plip.c:376: undefined
reference to `ppb_set_mode'
if_plip.o(.text+0x717): In function `lpioctl':
./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x722):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x736):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x79b): In function `lpioctl':
/usr/src/sys/dev/ppbus/if_plip.c:446: undefined reference to `ppb_unlock'
if_plip.o(.text+0x803):/usr/src/sys/dev/ppbus/if_plip.c:386: undefined
reference to `ppb_release_bus'
if_plip.o(.text+0x87a): In function `lp_detach':
/usr/src/sys/dev/ppbus/if_plip.c:292: undefined reference to `ppb_lock'
if_plip.o(.text+0x88a):/usr/src/sys/dev/ppbus/if_plip.c:294: undefined
reference to `ppb_unlock'
if_plip.o(.text+0x8ff): In function `lp_intr':
/usr/src/sys/dev/ppbus/if_plip.c:537: undefined reference to
`_ppb_assert_locked'
if_plip.o(.text+0x928): In function `lp_intr':
./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x933):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x947):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x988):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x993):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x9a7):./ppbus_if.h:27: more undefined references to
`ppbus_io_desc' follow
if_plip.o(.text+0xc10): In function `lp_intr':
/usr/src/sys/dev/ppbus/if_plip.c:635: undefined reference to `ppb_unlock'
if_plip.o(.text+0xc42):/usr/src/sys/dev/ppbus/if_plip.c:641: undefined
reference to `ppb_lock'
if_plip.o(.text+0xc57): In function `lp_intr':
./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0xc62):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0xc76):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0xcd2):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0xcdd):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0xcf1):./ppbus_if.h:27: more undefined references to
`ppbus_io_desc' follow
if_plip.o(.text+0x176f): In function `lp_intr':
/usr/src/sys/dev/ppbus/if_plip.c:583: undefined reference to `ppb_unlock'
if_plip.o(.text+0x17ea): In function `lpoutput':
/usr/src/sys/dev/ppbus/if_plip.c:695: undefined reference to `ppb_lock'
if_plip.o(.text+0x180d): In function `lpoutput':
./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x1818):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x182c):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x186c):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x1877):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x188b):./ppbus_if.h:27: more undefined references to
`ppbus_io_desc' follow
if_plip.o(.text+0x1b9e): In function `lpoutput':
/usr/src/sys/dev/ppbus/if_plip.c:828: undefined reference to `ppb_unlock'
if_plip.o(.text+0x1bc4): In function `lpoutput':
./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x1bcf):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x1be3):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x1c36):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x1c41):./ppbus_if.h:27: undefined reference to `ppbus_io_desc'
if_plip.o(.text+0x1c55):./ppbus_if.h:27: more undefined references to
`ppbus_io_desc' follow
if_plip.o(.text+0x3b7): In function `lpstop':
/usr/src/sys/dev/ppbus/if_plip.c:359: undefined reference to `ppb_release_bus'
if_plip.o(.text+0x17af): In function `lp_intr':
/usr/src/sys/dev/ppbus/if_plip.c:589: undefined reference to `ppb_lock'
*** Error code 1

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

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.

HEAD _at_ 2009.03.06. - ~20h CET