From today's CVS source:

#   compile  pf/pf_table.o
/usr/BUILD/tools/bin/i386--netbsdelf-gcc -O2 -ffreestanding  -Wall -Wstrict-prot
otypes -Wmissing-prototypes -Wpointer-arith -Wno-sign-compare -Wno-traditional -
Wno-uninitialized  -Werror   -I/usr/src/sys/dist/pf -I/usr/src/sys -DINET6 -DINE
T -nostdinc -I. -I/usr/src/sys/lkm/net/pf -isystem /usr/src/sys -isystem /usr/sr
c/sys/arch -D_KERNEL -D_LKM  -c    /usr/src/sys/dist/pf/net/pf_table.c
/usr/BUILD/tools/bin/i386--netbsdelf-ld -r  -o tmp.o if_pflog.o pf_real.o pf_ioc
tl.o pf_osfp.o pf_if.o pf_norm.o pf_table.o pf_lkm.o
/usr/BUILD/tools/bin/i386--netbsdelf-ld: cannot open pf_lkm.o: No such file or d
irectory

*** Failed target:  pf.o
*** Failed command: /usr/BUILD/tools/bin/i386--netbsdelf-ld -r -o tmp.o if_pflog
.o pf_real.o pf_ioctl.o pf_osfp.o pf_if.o pf_norm.o pf_table.o pf_lkm.o
*** Error code 1


		--Steve Bellovin, http://www.research.att.com/~smb