list of packages that are always compiled

Folks, is there an option to `port` that shows me the names of all packages that must be built from source, and which are not available pre-compiled from 'packages.macports.org'? Or maybe this list is somewhere else, ideally also giving a reason? [My use-case is 'ghostscript', for which I

building audacity from source fails

Hi; I tried to build audacity from source on my Mac Mini (M1 chip) and it failed. Compressed log file attached. Thanks, Ken Wolcott audacity_main.log.bz2 Description: BZip2 compressed data