Bug 472890 – sys-devel/llvm: clang does not support -frecord-gcc-switches

• Status: RESOLVED UPSTREAM
• Product: Gentoo Linux

[Description Rick Farina (Zero_Chaos) 2013-06-10 16:57:14 UTC]

I'm using -frecord-gcc-switches with gcc to detect when CFLAGS are not being respected (as everyone should be).  Recently I started testing with clang and it seems this feature is not implemented and causes errors with our QA check

clang: clang: warning: warning: argument unused during compilation: '-frecord-gcc-switches'
argument unused during compilation: '-frecord-gcc-switches'

[Comment 1 Richard Yao (RETIRED) 2013-06-10 19:19:28 UTC]

Documentation on this feature is available on the GCC wiki:

http://gcc.gnu.org/wiki/Record_GCC_command_line_switches_in_object_files

It should not be hard to implement. Someone just needs to sit down for a few days to do it.

[Comment 2 Paul Osmialowski 2016-04-22 17:22:43 UTC]

Did anyone actually attempt to implement this?!

[Comment 3 Michał Górny 2016-08-16 16:36:09 UTC]

@zzlei, feel like attempting to do this? ;-)

[Comment 4 zhanglei.april 2016-08-17 10:47:32 UTC]

(In reply to Michał Górny from comment #3)
> @zzlei, feel like attempting to do this? ;-)

This seems not as trivial as my previous patches to clang. I'll take a serious look when I've got time.

[Comment 5 Michał Górny 2018-03-29 07:42:05 UTC]

This is fully relying on someone implementing it upstream. No point in tracking it downstream.