building sys/boot ... shouldn't this "just work" ?

===> efi (all)
===> efi/libefi (all)
Warning: Object directory not changed from
original /home/sbruno/bsd/head/sys/boot/efi/libefi
===> libstand32 (all)
Warning: Object directory not changed from
original /home/sbruno/bsd/head/sys/boot/libstand32
===> zfs (all)
Warning: Object directory not changed from
original /home/sbruno/bsd/head/sys/boot/zfs
===> userboot (all)
===> userboot/ficl (all)
Warning: Object directory not changed from
original /home/sbruno/bsd/head/sys/boot/userboot/ficl
===> userboot/libstand (all)
Warning: Object directory not changed from
original /home/sbruno/bsd/head/sys/boot/userboot/libstand
===> userboot/test (all)
Warning: Object directory not changed from
original /home/sbruno/bsd/head/sys/boot/userboot/test
===> userboot/zfs (all)
Warning: Object directory not changed from
original /home/sbruno/bsd/head/sys/boot/userboot/zfs
===> userboot/userboot (all)
Warning: Object directory not changed from
original /home/sbruno/bsd/head/sys/boot/userboot/userboot
building shared library userboot.so
cc: error: no such file or directory:
'/home/sbruno/bsd/head/sys/boot/userboot/userboot/../zfs/libzfsboot.a'
*** Error code 1

Stop.
make[2]: stopped in /home/sbruno/bsd/head/sys/boot/userboot/userboot
*** Error code 1

Stop.
make[1]: stopped in /home/sbruno/bsd/head/sys/boot/userboot
*** Error code 1

Stop.
make: stopped in /home/sbruno/bsd/head/sys/boot