shared libarary not placed in /lib

Hi,
I've updated FreeBSD from 6.1R to current and noticed that
libutil.so.6 needed by getty, etc is not placed in /lib
but in /usr/lib, and startup failed.
# Then I booted the machine in single user mode and copied
# libutil.so.6 from /usr/lib.

I found "make -n install" in src/lib/libutil shows
   install -s -o root -g wheel -m 444     libutil.so.6 /usr/lib
on current. The line "SHLIBDIR?= /lib" in Makefile have no effect?

Best regards,
-- 
Yoichi NAKAYAMA