"Unsupported option" build failure(s) — clang 12.0.1

Many options were not supported in clang 2.9 (like, -traditional, -MG, etc), version 3.0 implemented most of them.
PackageVersionSupposed error messageFull log Bug report
bogofilter 1.2.5-1clang: error: '-I-' not supported, please use -iquote instead Log
labrea 2.5-stable-3.1clang: error: '-I-' not supported, please use -iquote instead Log

2 errors