Unknown/unexpected directive - Rebuild of the Debian archive with clang

"Unknown/unexpected directive" build failure(s)
clang 3.4.2

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
fis-gtm	6.0-003-2	pseudo_ret.s:13:2: error: unknown directive	Log
grml2usb	0.14.4	mbr.S:32:2: error: unexpected directive .code16	Log
kexec-tools	1:2.0.4-1	:23:2: error: unknown directive	Log
pearpc	0.5.dfsg-2.1	jitc_mmu.S:36:1: error: unknown directive	Log
wraplinux	1.7-8	reloc/a20.S:31:2: error: unexpected directive .code16	Log

5 errors

Debian Package rebuild