zfs chflags

very up to date 7 i386 system

:/usr/src# time make installworld 2>&1 > installworld.log 
install: /usr/lib/libkse.so.3: chflags: Operation not supported
install: /usr/lib/librt.so.1: chflags: Operation not supported
chflags: /usr/bin/chpass: Operation not supported
install: /usr/bin/login: chflags: Operation not supported
install: /usr/bin/opieinfo: chflags: Operation not supported
install: /usr/bin/opiepasswd: chflags: Operation not supported
chflags: /usr/bin/passwd: Operation not supported
install: /usr/bin/rlogin: chflags: Operation not supported
install: /usr/bin/rsh: chflags: Operation not supported
install: /usr/bin/su: chflags: Operation not supported
install: /usr/bin/crontab: chflags: Operation not supported
install: /usr/sbin/sliplogin: chflags: Operation not supported

shown as "done" on http://wiki.freebsd.org/ZFS, but i think that
is only for 8-current, and it does work on my 8-current systems.

in the archives, there is a message which says "For the record, defining
NO_FSCHG= would work around this."  but it does not say what goes to the
right of the "="  and may i assume this is to make installworld?

so choices seem to be
  o move to 8-current
  o dig up some patch to zfs 13 and rebuild
  o get clue from mailing list

randy