"Unknown argument in the command line" build failure(s) — clang 9.0.1

gcc has plenty of options. Some of them should be implemented by clang, some other, no.
A first discussion occurred on this subject on the clang mailing list.
PackageVersionSupposed error messageFull log Bug report
beep 1.4.3-2clang: error: unknown argument: '-fstack-clash-protection' Log
blktrace 1.2.0-5clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
calibre 4.99.4+dfsg+really4.11.2-1clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
cmark-gfm 0.29.0.gfm.0-3clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
cod-tools 2.9+dfsg-1clang: error: unknown argument: '-foptimize-register-move' Log
dlm 4.0.9-1clang: error: unknown argument: '-fstack-clash-protection' Log
ebook-speaker 5.3-2clang: error: unknown argument: '-faggressive-loop-optimizations' Log
gfan 0.6.2-2clang: error: unknown argument: '-fno-guess-branch-probability' Log 755308
gprolog 1.4.5.0-3clang: error: unknown argument '-ffixed-r12'; did you mean '-ffixed-r19'? Log
hadori 1.0-1clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
lastpass-cli 1.3.3-3clang: error: unknown argument: '-fno-aggressive-loop-optimizations' Log
libappimage 0.1.9+dfsg-1clang: error: unknown argument: '-fmacro-prefix-map=/<>=../' Log
libphysfs 3.0.2-4clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
libserial 0.6.0~rc2+svn122-4clang: error: unknown argument: '-ffile-prefix-map=/build/sip4-CxdHva/sip4-4.19.21+dfsg=.' Log
pyqwt3d 0.1.8-5clang: error: unknown argument: '-ffile-prefix-map=/build/sip4-CxdHva/sip4-4.19.21+dfsg=.' Log
redisearch 1:1.2.1-4clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
ros-rviz 1.13.7+dfsg-1clang: error: unknown argument: '-ffile-prefix-map=/build/sip4-CxdHva/sip4-4.19.21+dfsg=.' Log
rtags 2.37-1clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
sip4 4.19.21+dfsg-1clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
ssh-agent-filter 0.5.2-1clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
tbb 2020.1-2clang: error: unknown argument: '-flifetime-dse=1' Log
thc-ipv6 3.6-1clang: error: unknown argument: '-freorder-blocks-and-partition' Log
trinityrnaseq 2.6.6+dfsg-6clang: error: unknown argument: '-fno-nonansi-builtins' Log
uftrace 0.9.3-1clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log
videogen 0.33-8clang: error: unknown argument: '-ffile-prefix-map=/<>=.' Log

25 errors