destroot.violate_mtree doesn't work?

[Julian Dunn]

I'm still trying to port Amanda (www.amanda.org) to Macports. Amanda wants to install its own dumper in /opt/local - not great, but it does this under FreeBSD too. In order to accommodate this I wanted to set:

destroot.violate_mtree   yes

per the Macports guide at http://geeklair.net/new_macports_guide/. However, 'port' doesn't seem to like this directive:

Can't map the URL 'file://.' to a port description file ("invalid command name "destroot.violate_mtree"").

Any idea what I'm doing wrong?

- Julian