"Unsupported argument with another option" build failure(s) — clang 11.0.0

PackageVersionSupposed error messageFull log Bug report
autodock-vina 1.1.2-5clang: error: unsupported option '--lto'; did you mean '-flto'? Log
beep 1.4.9-1clang: error: unsupported argument '-adhlns=beep-log.gcc-lst' to option 'Wa,' Log
freecontact 1.0.21-8clang: error: unsupported option '--help=optimizers' Log
gnucap-python 0.0.2-1.2clang: error: unsupported option '--print-multiarch' Log
libsimpleini 4.17+dfsg-6clang: error: unsupported option '--print-multiarch' Log
stalin 0.11-6clang: error: unsupported option '-freg-struct-return' for target 'x86_64-pc-linux-gnu' Log
supermin 5.2.0-2clang: error: unsupported option '-specs /usr/lib/x86_64-linux-musl/musl-gcc.specs' Log

7 errors