Provides a way to extract the path of libcompiler_rt

[llvmbot]

Bugzilla Link	21538
Resolution	FIXED
Resolved on	Jul 07, 2019 01:18
Version	trunk
OS	Linux
Blocks	#22065
Attachments	Frontend driver patch, Frontend driver (testcase) patch
Reporter	LLVM Bugzilla Contributor
CC	@majnemer,@echristo,@MaskRay,@Artem-B

Extended Description

Hi,

Attached is a path that provides a way to get at the path of libcompiler_rt from the frontend much the same way '-print-libgcc-file-name' works to get at libgcc.a

We need this (it blocks us) in Coreboot.org as our build system is very low level and this kind of granularity of control is used during link-time with our rather demanding/tentative linker scripts.

Seems people in the IRC are very busy these days to quickly take care of this one so i'll leave it here. I've done my best on the test case also so this is like 98% the way there, I just need someone to take care of the rest.

Kind Regards,
Edward.

[llvmbot]

Without this patch, you essentially can not build coreboot^[1] !

This is a very significant patch for us and there has been no progress on this for many months. The patch is provided here, can we have some progress please..?

Cheers,
Edward.

[1] - http://coreboot.org/

[majnemer]

Ed,

Please send patches to the mailinglist.

[MaskRay]

Fixed by https://reviews.llvm.org/D25338

clang -rtlib=compiler-rt --print-libgcc-file-name

[llvmbot]

mentioned in issue #22065

[llvmbot]

mentioned in issue #22065