Aldert, this is great news!
This port could be the start of a multiplatform OpenACS installer. FreeBSD ports is the base for some other port platforms, such as opendarwin[1].
What "workingdirectory" does one use to most closely match a standard install according to OpenACS documentation[2]?
1. http://darwinports.opendarwin.org/
2. https://openacs.org/doc/openacs-5-1/install-steps.html#id2509822