Argument unused caused failure - Rebuild of the Debian archive with clang

"Argument unused caused failure" build failure(s)
clang 3.3

Unknown or unused arguments triggers errors with -Werror:
clang -Werror -ggdb3 foo.c

Versions: 2.9 - 3.0 - 3.1 - 3.2 - 3.3 - 3.4 - 3.4.2 - 3.5.0 - 3.6.0 - 3.8.1 - 3.9.1 - 4.0.1 - 5.0 - 6.0 - 8.0.1 - 9.0.1 - 10.0.0 - 11.0.0 - 12.0.1 - 13.0.0

Package	Version	Supposed error message	Full log
bin-prot	2.0.9-1	clang: error: argument unused during compilation: '-fno-defer-pop'	Log
doxymacs	1.8.0-6	clang: error: argument unused during compilation: '-fexpensive-optimizations'	Log
libosl	0.5.0-1	clang: error: argument unused during compilation: '-funswitch-loops'	Log
libwebsockets	1.2.2-1	clang: error: argument unused during compilation: '-rdynamic'	Log
lio-utils	3.1+git2.fd0b34fd-2	clang: error: argument unused during compilation: '-shared'	Log
spice-vdagent	0.14.0-1	clang: error: argument unused during compilation: '-Wp,-D_FORTIFY_SOURCE=2'	Log

6 errors

Debian Package rebuild