make buildworld failed!

%uname -a
FreeBSD www.boolome.cn 8.0-CURRENT FreeBSD 8.0-CURRENT #1: Fri Dec  5
09:33:04 CST 2008     root_at_www.boolome.cn:/usr/obj/usr/src/sys/boolome
i386
%cd /usr/src
%make buildworld 
--------------------------------------------------------------
>>> World build started on Sat Dec  6 17:19:08 CST 2008
--------------------------------------------------------------

--------------------------------------------------------------
>>> Rebuilding the temporary build tree
--------------------------------------------------------------

skip....

--------------------------------------------------------------
>>> 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  VERSION="FreeBSD 8.0-CURRENT i386 800049"  MAKEFLAGS="-m /usr/src/tools/build/mk  -m /usr/src/share/mk" make -f Makefile.inc1  DESTDIR=  BOOTSTRAPPING=800049  -DWITHOUT_SSP  -DWITHOUT_HTML -DWITHOUT_INFO -DNO_LINT -DWITHOUT_MAN  -DWITHOUT_NLS -DNO_PIC -DWITHOUT_PROFILE -DNO_SHARED  -DNO_CPU_CFLAGS -DNO_WARNS -DNO_CTF 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 -pipe  -I/usr/obj/usr/src/tmp/legacy/usr/include -c /usr/src/tools/build/dummy.c
building static egacy library
ranlib libegacy.a
sh /usr/src/tools/install.sh -C -o root -g wheel -m 444   libegacy.a /usr/obj/usr/src/tmp/legacy/usr/lib

--------------------------------------------------------------
>>> stage 1.2: bootstrap tools
--------------------------------------------------------------
.....


echo "NULL};"						>> gtyp-gen.h
echo "static const char * const lang_dir_names[] = {"	>> gtyp-gen.h
echo "\"c\", "						>> gtyp-gen.h
echo "\"cp\", "						>> gtyp-gen.h
echo "\"objc\", "						>> gtyp-gen.h
echo "NULL};"						>> gtyp-gen.h
cc -O2 -pipe -I. -DIN_GCC -DHAVE_CONFIG_H -DPREFIX=\"/usr\"
-I/usr/obj/usr/src/gnu/usr.bin/cc/cc_tools/../cc_tools
-I/usr/src/gnu/usr.bin/cc/cc_tools/../cc_tools
-I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc
-I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/config
-I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/include
-I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/libcpp/include -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/libdecnumber -g -DGENERATOR_FILE -DHAVE_CONFIG_H  -I/usr/obj/usr/src/tmp/legacy/usr/include -c /usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/gengtype.c
yacc -d -o
gengtype-yacc.c /usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/gengtype-yacc.y
cat    gengtype-yacc.c > gengtype-yacc+%DIKED.c
sed -e "s/xmalloc/malloc/g"  -e "s/xrealloc/realloc/g"  -e
"s/malloc/xmalloc/g"  -e "s/realloc/xrealloc/g"  gengtype-yacc.c >
gengtype-yacc+%DIKED.c
cc -O2 -pipe -I. -DIN_GCC -DHAVE_CONFIG_H -DPREFIX=\"/usr\"
-I/usr/obj/usr/src/gnu/usr.bin/cc/cc_tools/../cc_tools
-I/usr/src/gnu/usr.bin/cc/cc_tools/../cc_tools
-I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc
-I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/config
-I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/include
-I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/libcpp/include -I/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcclibs/libdecnumber -g -DGENERATOR_FILE -DHAVE_CONFIG_H  -I/usr/obj/usr/src/tmp/legacy/usr/include -c gengtype-yacc+%DIKED.c
flex
-ogengtype-lex.c /usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/gengtype-lex.l
*** Error code 1

Stop in /usr/src/gnu/usr.bin/cc/cc_tools.
*** Error code 1

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

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

Stop in /usr/src.

What's wrong..