"Unsupported option" build failure(s) — clang 5.0

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
labrea 2.5-stable-3clang: error: '-I-' not supported, please use -iquote instead Log
mustang 3.2.3-1clang: error: the clang compiler does not support '-traditional' Log

2 errors