And again, /libexec/ld-elf.so.1: Undefined symbol "__stdoutp" referenced from COPY relocation in /bin/sh

Hi guys.

Ok, this is starting to be really confusing and annoying.
I tried to upgrade 5.4-RELEASE to 6.0-CURRENT and still can't successfully run make installworld.
Just for the record, the procedure was to:
rm -rf /usr/obj/*
rm -rf /usr/src/*
cvsup
cd /usr/src; make buildworld
make buildkernel KERNCONF=MYKERNEL
make installkernel KERNCONF=MYKERNEL
mergemaster -p
reboot to single user mode
Then make buildworld craps out. 

What the heck is wrong? I could successfully upgrade my 5.4 kernel and world on the same box.

I also have :
options         COMPAT_43              
options         COMPAT_FREEBSD4         
in my kernel config. 

My make.conf is following:
CFLAGS=         -O -pipe        #Compiler settings used when compiling C code.
CXXFLAGS+=      -O -pipe        #Compiler settings used when compiling C++ code.
#COPTFLAGS=      -O2 -pipe      #To compile the kernel with special optimizations

CPUTYPE?=pentiumpro
COMPAT22=YES
COMPAT3x=YES
COMPAT4x=YES
LOADER_TFTP_SUPPORT= YES

# added by use.perl 2005-06-02 14:44:11
PERL_VER=5.8.6
PERL_VERSION=5.8.6

This is the error message:

===> bin/sh (install)
install -s -o root -g wheel -m 555  -S sh /bin
install -o root -g wheel -m 444 sh.1.gz  /usr/share/man/man1
===> bin/sleep (install)
install -s -o root -g wheel -m 555   sleep /bin
install -o root -g wheel -m 444 sleep.1.gz  /usr/share/man/man1
===> bin/stty (install)
install -s -o root -g wheel -m 555   stty /bin
install -o root -g wheel -m 444 stty.1.gz  /usr/share/man/man1
===> bin/sync (install)
install -s -o root -g wheel -m 555   sync /bin
install -o root -g wheel -m 444 sync.8.gz  /usr/share/man/man8
===> bin/test (install)
install -s -o root -g wheel -m 555   test /bin
install -o root -g wheel -m 444 test.1.gz  /usr/share/man/man1
/libexec/ld-elf.so.1: Undefined symbol "__stdoutp" referenced from COPY relocation in /bin/sh
*** Error code 1

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

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

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

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

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

Stop in /usr/src.