can't make port BIND 9.7.3

[Len Conrad]

7.2-RELEASE-p1-jc2

trying to make in /usr/ports/dns/bind97

distinfo shows bind-9.7.3.tar.gz

make options:
 
SSL
IDN
replace_base
sigchase
ipv6
threads
links
xml

exiting the options, an immediate stop:

make: don't know how to make /usr/ports/dns/bind97/work/.build_done.bind97._usr_local. Stop
*** Error code 2

Stop in /usr/ports/dns/bind97.

thanks
Len