build failures on 8.x: is upgrading the right fix?

[Paul Beard]

Patching for libEGL-10.6.6
===>  Applying FreeBSD patches for libEGL-10.6.6
===>   libEGL-10.6.6 depends on executable: makedepend - found
===>   libEGL-10.6.6 depends on file: /usr/local/bin/flex - found
===>   libEGL-10.6.6 depends on package: llvm36>=0 - not found
===>  llvm36-3.6.2_2 is marked as broken: GCC failing on 8.x.

Is upgrading to 9 or 10 the One True Fix? 

Probably past time to do it but it’s a lightly used system that doesn’t get much attention.