The newer `makeinfo` installed by the `texinfo` port is barfing on the old
`texi` file in treecc (which is ancient software).
If you just deactivate `texinfo` you can build it:
sudo port deactivate texinfo
$ port -v installed treecc
The following ports are currently installed:
treecc @0.3.10_1 (active) platform='darwin 10' archs='x86_64'
treecc hasn't been updated since ice was delivered by truck. I just don't
have the enthusiasm to fix the texi file.