Building FreeBSD 9.0-CUR/amd64 with CLANG fails

Well,
I tried the first time building FreeBSD 9.0-CURRENT/amd64 (sources from 
today's latest svn) and it failed (taken the /etc/make.conf addition 
from the wiki), giving the below showed error.

Is this a well known issue and FreeBSD isn't building correctly at the 
moment or did I miss something (not mentioned on the wiki's page)?



clang: warning: argument unused during compilation: 
'-finhibit-size-directive'
clang: warning: argument unused during compilation: '-fno-toplevel-reorder'
sh /usr/src/tools/install.sh -o root -g wheel -m 444  crtbegin.o 
/usr/obj/usr/src/lib32/usr/lib32/crtbegin.o
sh /usr/src/tools/install.sh -o root -g wheel -m 444  crtend.o 
/usr/obj/usr/src/lib32/usr/lib32/crtend.o
sh /usr/src/tools/install.sh -o root -g wheel -m 444  crtbeginT.o 
/usr/obj/usr/src/lib32/usr/lib32/crtbeginT.o
sh /usr/src/tools/install.sh -o root -g wheel -m 444  crtbegin.So 
/usr/obj/usr/src/lib32/usr/lib32/crtbeginS.o
sh /usr/src/tools/install.sh -o root -g wheel -m 444  crtend.So 
/usr/obj/usr/src/lib32/usr/lib32/crtendS.o
===> lib/csu/i386-elf (obj,depend,all,install)
rm -f .depend
CC='clang' mkdep -f .depend -a    -I/usr/src/lib/csu/i386-elf/../common 
-I/usr/src/lib/csu/i386-elf/../../libc/include 
/usr/src/lib/csu/i386-elf/crti.S /usr/src/lib/csu/i386-elf/crtn.S
clang -O2 -pipe -I/usr/src/lib/csu/i386-elf/../common 
-I/usr/src/lib/csu/i386-elf/../../libc/include -std=gnu99 
-Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter 
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type 
-Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter 
-Wcast-align -Wchar-subscripts -Winline -Wnested-externs 
-Wredundant-decls -Wold-style-definition -Wno-pointer-sign  -c 
/usr/src/lib/csu/i386-elf/crti.S
clang -O2 -pipe -I/usr/src/lib/csu/i386-elf/../common 
-I/usr/src/lib/csu/i386-elf/../../libc/include -std=gnu99 
-Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter 
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type 
-Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter 
-Wcast-align -Wchar-subscripts -Winline -Wnested-externs 
-Wredundant-decls -Wold-style-definition -Wno-pointer-sign  -c 
/usr/src/lib/csu/i386-elf/crtn.S
clang -O2 -pipe -I/usr/src/lib/csu/i386-elf/../common 
-I/usr/src/lib/csu/i386-elf/../../libc/include -std=gnu99 
-Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter 
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type 
-Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter 
-Wcast-align -Wchar-subscripts -Winline -Wnested-externs 
-Wredundant-decls -Wold-style-definition -Wno-pointer-sign -DGCRT -S -o 
gcrt1_c.s /usr/src/lib/csu/i386-elf/crt1_c.c
sed -i "" -e '/\.note\.ABI-tag/s/progbits/note/' gcrt1_c.s
clang -O2 -pipe -I/usr/src/lib/csu/i386-elf/../common 
-I/usr/src/lib/csu/i386-elf/../../libc/include -std=gnu99 
-Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter 
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type 
-Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter 
-Wcast-align -Wchar-subscripts -Winline -Wnested-externs 
-Wredundant-decls -Wold-style-definition -Wno-pointer-sign -c -o 
gcrt1_c.o gcrt1_c.s
clang: warning: argument unused during compilation: '-I 
/usr/src/lib/csu/i386-elf/../common'
clang: warning: argument unused during compilation: '-I 
/usr/src/lib/csu/i386-elf/../../libc/include'
clang: warning: argument unused during compilation: '-std=gnu99'
clang: warning: argument unused during compilation: '-Wsystem-headers'
clang: warning: argument unused during compilation: '-Wall'
clang: warning: argument unused during compilation: '-Wno-format-y2k'
clang: warning: argument unused during compilation: '-W'
clang: warning: argument unused during compilation: '-Wno-unused-parameter'
clang: warning: argument unused during compilation: '-Wstrict-prototypes'
clang: warning: argument unused during compilation: '-Wmissing-prototypes'
clang: warning: argument unused during compilation: '-Wpointer-arith'
clang: warning: argument unused during compilation: '-Wreturn-type'
clang: warning: argument unused during compilation: '-Wcast-qual'
clang: warning: argument unused during compilation: '-Wwrite-strings'
clang: warning: argument unused during compilation: '-Wswitch'
clang: warning: argument unused during compilation: '-Wshadow'
clang: warning: argument unused during compilation: '-Wunused-parameter'
clang: warning: argument unused during compilation: '-Wcast-align'
clang: warning: argument unused during compilation: '-Wchar-subscripts'
clang: warning: argument unused during compilation: '-Winline'
clang: warning: argument unused during compilation: '-Wnested-externs'
clang: warning: argument unused during compilation: '-Wredundant-decls'
clang: warning: argument unused during compilation: '-Wold-style-definition'
clang: warning: argument unused during compilation: '-Wno-pointer-sign'
clang -O2 -pipe -I/usr/src/lib/csu/i386-elf/../common 
-I/usr/src/lib/csu/i386-elf/../../libc/include -std=gnu99 
-Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter 
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type 
-Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter 
-Wcast-align -Wchar-subscripts -Winline -Wnested-externs 
-Wredundant-decls -Wold-style-definition -Wno-pointer-sign  -c 
/usr/src/lib/csu/i386-elf/crt1_s.S
ld -m elf_i386_fbsd -Y P,/usr/obj/usr/src/lib32/usr/lib32  -o gcrt1.o -r 
crt1_s.o gcrt1_c.o
ld: Relocatable linking with relocations from format 
elf64-x86-64-freebsd (crt1_s.o) to format elf32-i386-freebsd (gcrt1.o) 
is not supported
*** Error code 1

Stop in /usr/src/lib/csu/i386-elf.
*** Error code 1

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

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

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