"Linker option unused" build failure(s) — clang 4.0.1

PackageVersionSupposed error messageFull log Bug report
frozen-bubble 2.212-8clang: error: -lglib-2.0: 'linker' input unused [-Werror,-Wunused-command-line-argument] Log
libphone-utils 0.1+git20110523-3clang: error: -lm: 'linker' input unused [-Werror,-Wunused-command-line-argument] Log
openssl1.0 1.0.2l-2clang: error: -Wl,-z,relro: 'linker' input unused [-Werror,-Wunused-command-line-argument] Log
rdup 1.1.15-1clang: error: -Wl,-z,defs: 'linker' input unused [-Werror,-Wunused-command-line-argument] Log

4 errors