Can't build mozilla-firefox 1.0 port

[James Earl <jamesd_(_dot_)_earl_(_at_)_gmail_(_dot_)_com>]

Hi,

I just installed OpenBSD 3.6, and have an up-to-date copy of the ports
tree.  I'd like to build the mozilla-firefox 1.0 port, but it give me
the following error when I type 'make install':

"/usr/ports/infrastructure/mk/gcc3.port.mk", line 4: Unclosed .include
filename. '"' expected
Fatal errors encountered -- cannot continue

This is after getting a ports.tar.gz snapshot, and then cvsup'ing any
changes.  I'm new to OpenBSD so I imagine this is something very
obvious?