The problem with UPDATING is that it's only visible to people with a checked-out ports tree; people who only use binary packages will never see the messages.

In D24324#915061, @andrew_tao173.riddles.org.uk wrote:

so... two years after everyone seems to have accepted it, maybe someone would commit it?

In D40119#914019, @arrowd wrote:

Ideally, we'd want to use %%LOCALBASE%% substitution there, but meh. I think this is fine as it is.

This is a really good idea. The current llvm.mk causes some POLA problems for people who don't have DEFAULT_VERSIONS=llvm=... set, where suddenly llvm90 is being used to build things.