make buildworld broken on current?

xnet# date
Wed Apr 12 23:49:57 MSD 2006

xnet# make update SUPHOST=cvsup7.ru.freebsd.org
--------------------------------------------------------------
>>> Running /usr/bin/csup
--------------------------------------------------------------
Parsing supfile "/usr/share/examples/cvsup/stable-supfile"
Connecting to cvsup7.ru.freebsd.org
Connected to 83.222.3.84
Server software version: SNAP_16_1h
Negotiating file attribute support
Exchanging collection information
Establishing multiplexed-mode data connection
Running
Updating collection src-all/cvs
 Delete src/sys/i386/conf/LINT
Shutting down connection to server
Finished successfully
xnet#
xnet#
xnet# make buildworld

--------------------------------------------------------------
>>> Rebuilding the temporary build tree
--------------------------------------------------------------
rm -rf /usr/obj/usr/src/tmp
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/bin
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/games
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/include/c++/3.4
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/include/sys
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/lib
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/libexec
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/sbin
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/dict
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devX100
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devX100-12
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devX75
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devX75-12
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devascii
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devcp1047
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devdvi
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devhtml
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devkoi8-r
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devlatin1
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devlbp
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devlj4
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devps
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/groff_font/devutf8
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/tmac/mdoc
mkdir -p /usr/obj/usr/src/tmp/legacy/usr/share/tmac/mm
mkdir -p /usr/obj/usr/src/tmp/lib
mkdir -p /usr/obj/usr/src/tmp/usr/bin
mkdir -p /usr/obj/usr/src/tmp/usr/include
mkdir -p /usr/obj/usr/src/tmp/usr/lib/compat/aout
mkdir -p /usr/obj/usr/src/tmp/usr/libdata/ldscripts
mkdir -p /usr/obj/usr/src/tmp/usr/libexec
mkdir -p /usr/obj/usr/src/tmp/usr/sbin
mkdir -p /usr/obj/usr/src/tmp/usr/share/misc
mkdir -p /usr/obj/usr/src/tmp/usr/share/snmp/defs
mkdir -p /usr/obj/usr/src/tmp/usr/share/snmp/mibs
mtree -deU -f /usr/src/etc/mtree/BSD.include.dist  -p
/usr/obj/usr/src/tmp/usr/include >/dev/null
ln -sf /usr/src/sys /usr/obj/usr/src/tmp

--------------------------------------------------------------
>>> stage 1.1: legacy release compatibility shims
--------------------------------------------------------------
cd /usr/src; MAKEOBJDIRPREFIX=/usr/obj/usr/src/tmp  INSTALL="sh
/usr/src/tools/install.sh"
PATH=/usr/obj/usr/src/tmp/legacy/usr/sbin:/usr/obj/usr/src/tmp/legacy/usr/bin:/usr/obj/usr/src/tmp/legacy/usr/games:/sbin:/bin:/usr/sbin:/usr/bin
WORLDTMP=/usr/obj/usr/src/tmp  MAKEFLAGS="-m /usr/src/tools/build/mk  -m
/usr/src/share/mk" make -f Makefile.inc1  DESTDIR=  BOOTSTRAPPING=700014
-DWITHOUT_HTML -DWITHOUT_INFO -DNO_LINT -DWITHOUT_MAN  -DWITHOUT_NLS
-DNO_PIC -DWITHOUT_PROFILE -DNO_SHARED  -DNO_CPU_CFLAGS -DNO_WARNS legacy
===> tools/build (obj,includes,depend,all,install)
/usr/obj/usr/src/tmp/usr/src/tools/build created for /usr/src/tools/build
cd /usr/src/tools/build; make buildincludes; make installincludes
rm -f .depend
mkdep -f .depend -a    -I/usr/obj/usr/src/tmp/legacy/usr/include
/usr/src/tools/build/dummy.c
cc -O2 -fno-strict-aliasing -pipe ''
-I/usr/obj/usr/src/tmp/legacy/usr/include -c /usr/src/tools/build/dummy.c
cc: : No such file or directory
*** Error code 1

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

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

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

Stop in /usr/src.

xnet# uname -vp
FreeBSD 7.0-CURRENT #2: Thu Mar  9 11:53:58 MSK 2006    
root_at_xnet.nnov.ru:/usr/obj/usr/src/sys/unstable
i386