Making jails in FreeBSD

When creating a jail on one of our test servers according to the following guidelines: Creating and Controlling Jails

I am running into the following issue:

# make world DESTDIR=$D
make: don't know how to make world. Stop

What can be done about this?

Another question: If there are two jails, what is the recommended method of synchronising these jails? For instance, upload jail1 via FTP onto a separate (logical) server and then download into jail2 again via FTP from that server?

Will try to install cvsup first and get back with issues, if any. Would be good to know rth answer to the second set of questions though.

The error message still remains.

make: don't know how to make world. Stop

Any suggestions?