Trybroken
On occasion portmgr does a full ports build with the -trybroken flag set. This forces the ports marked BROKEN to be built when they otherwise would not.
Below is a list of ports that built on amd64-8-exp in December 2011. Each of these ports needs to be further investigated to see if it's really fair to mark it unbroken on amd64.
Hints: you can use portsmon to look up the build status of one port on pointyhat (but not, at this time, on pointyhat-west). You can also look up the status of all ports that portsmon thinks are broken (but note: portsmon's view of BROKEN is 'as evaluated on i386-9' due to limitations in its database schema).
Contact MarkLinimon for any questions.
List of ports
note: the following ports which actually built are marked BROKEN for reasons other than build failure:
audio/gstreamer-plugins-flite/