[head tinderbox] failure on amd64/amd64

[FreeBSD Tinderbox]

TB --- 2011-06-27 20:10:00 - tinderbox 2.7 running on freebsd-current.sentex.ca
TB --- 2011-06-27 20:10:00 - starting HEAD tinderbox run for amd64/amd64
TB --- 2011-06-27 20:10:00 - cleaning the object tree
TB --- 2011-06-27 20:10:43 - cvsupping the source tree
TB --- 2011-06-27 20:10:43 - /usr/bin/csup -z -r 3 -g -L 1 -h cvsup.sentex.ca /tinderbox/HEAD/amd64/amd64/supfile
TB --- 2011-06-27 20:10:56 - building world
TB --- 2011-06-27 20:10:56 - MAKEOBJDIRPREFIX=/obj
TB --- 2011-06-27 20:10:56 - PATH=/usr/bin:/usr/sbin:/bin:/sbin
TB --- 2011-06-27 20:10:56 - TARGET=amd64
TB --- 2011-06-27 20:10:56 - TARGET_ARCH=amd64
TB --- 2011-06-27 20:10:56 - TZ=UTC
TB --- 2011-06-27 20:10:56 - __MAKE_CONF=/dev/null
TB --- 2011-06-27 20:10:56 - cd /src
TB --- 2011-06-27 20:10:56 - /usr/bin/make -B buildworld
>>> World build started on Mon Jun 27 20:10:56 UTC 2011
>>> 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
>>> stage 4.4: building everything
[...]
rm pxeboot.tmp
===> sys/boot/i386/zfsboot (all)
cc -DBOOTPROG=\"zfsboot\"  -Os  -fno-guess-branch-probability  -fomit-frame-pointer  -fno-unit-at-a-time  -mno-align-long-strings  -mrtd  -DBOOT2  -DSIOPRT=0x3f8  -DSIOFMT=0x3  -DSIOSPD=9600  -I/src/sys/boot/i386/zfsboot/../../common  -I/src/sys/boot/i386/zfsboot/../common  -I/src/sys/boot/i386/zfsboot/../../zfs  -I/src/sys/boot/i386/zfsboot/../../../cddl/boot/zfs  -I/src/sys/boot/i386/zfsboot/../btx/lib -I.  -I/src/sys/boot/i386/zfsboot/../boot2  -Wall -Waggregate-return -Wbad-function-cast -Wcast-align  -Wmissing-declarations -Wmissing-prototypes -Wnested-externs  -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings  -Winline --param max-inline-insns-single=100 -ffreestanding -mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 -msoft-float -m32 -march=i386 -std=gnu99    -c /src/sys/boot/i386/zfsboot/zfsldr.S
ld -static -N --gc-sections -nostdlib -m elf_i386_fbsd -e main -Ttext 0x7c00 -o zfsldr.out zfsldr.o
zfsldr.o: In function `main':
(.text+0xa): undefined reference to `start'
zfsldr.o: In function `seta20.3':
(.text+0xa7): undefined reference to `start'
*** Error code 1

Stop in /src/sys/boot/i386/zfsboot.
*** Error code 1

Stop in /src/sys/boot/i386.
*** Error code 1

Stop in /src/sys/boot.
*** Error code 1

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

Stop in /src.
*** Error code 1

Stop in /src.
*** Error code 1

Stop in /src.
TB --- 2011-06-27 21:58:12 - WARNING: /usr/bin/make returned exit code  1 
TB --- 2011-06-27 21:58:12 - ERROR: failed to build world
TB --- 2011-06-27 21:58:12 - 5143.55 user 937.30 system 6492.20 real


http://tinderbox.freebsd.org/tinderbox-head-HEAD-amd64-amd64.full