Not to be the party pooper here, but as of now devel/llvm14 doesn't even build with default options on 13.0 (I think brooks@'s rererevert of the libunwind dependency logic broke it, at least the error matches). Once that's sorted out, I can take care of the wasi-compiler-stuff. Totally excited about having a fourth llvm installation besides base.

patch-bug847568 touches old-configure.in - I'd rather ask why it does not regenerate your old-configure (are you even building what I'm building?). If in doubt, avoid any manual manipulation of the source and use poudriere, everything else gives unpredictable results.

Turns out this is not enough: the build fails with

Right, that's somewhat historic.
Any reason for this spring-cleaning right now?