[head tinderbox] failure on i386/i386

[FreeBSD Tinderbox]

TB --- 2007-03-22 18:22:13 - tinderbox 2.3 running on freebsd-current.sentex.ca
TB --- 2007-03-22 18:22:13 - starting HEAD tinderbox run for i386/i386
TB --- 2007-03-22 18:22:13 - cleaning the object tree
TB --- 2007-03-22 18:22:45 - checking out the source tree
TB --- 2007-03-22 18:22:45 - cd /tinderbox/HEAD/i386/i386
TB --- 2007-03-22 18:22:45 - /usr/bin/cvs -f -R -q -d/home/ncvs update -Pd -A src
TB --- 2007-03-22 18:29:46 - building world (CFLAGS=-O2 -pipe)
TB --- 2007-03-22 18:29:46 - cd /src
TB --- 2007-03-22 18:29:46 - /usr/bin/make -B buildworld
>>> World build started on Thu Mar 22 18:29:47 UTC 2007
>>> Rebuilding the temporary build tree
>>> stage 1.1: legacy release compatibility shims
>>> stage 1.2: bootstrap tools
>>> stage 2.1: cleaning up the object tree
>>> stage 2.2: rebuilding the object tree
>>> stage 2.3: build tools
>>> stage 3: cross tools
>>> stage 4.1: building includes
>>> stage 4.2: building libraries
>>> stage 4.3: make dependencies
[...]
echo accton: /obj/src/tmp/usr/lib/libc.a  >> .depend
===> usr.sbin/acpi (depend)
===> usr.sbin/acpi/acpiconf (depend)
rm -f .depend
mkdep -f .depend -a    -I/src/usr.sbin/acpi/acpiconf/../../../sys /src/usr.sbin/acpi/acpiconf/acpiconf.c
echo acpiconf: /obj/src/tmp/usr/lib/libc.a  >> .depend
===> usr.sbin/acpi/acpidb (depend)
make: don't know how to make tbconvrt.c. Stop
*** Error code 2

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

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

Stop in /src.
*** Error code 1

Stop in /src.
*** Error code 1

Stop in /src.
TB --- 2007-03-22 18:55:26 - WARNING: /usr/bin/make returned exit code  1 
TB --- 2007-03-22 18:55:26 - ERROR: failed to build world
TB --- 2007-03-22 18:55:26 - tinderbox aborted
TB --- 0.82 user 2.84 system 1993.07 real


http://tinderbox.des.no/tinderbox-head-HEAD-i386-i386.full