I originally implemented this behavior behind -fdebug-prefix-map but there was some pushback, more context: https://lists.llvm.org/pipermail/cfe-dev/2020-June/065668.html

In D83152#2133950, @rupprecht wrote:

In D83152#2133855, @MaskRay wrote:

I cannot find any search result about no-warning-for-no-symbols. Is -no-warning-for-no-symbols really an existing option? libtool is an ar like tool.

I found it by looking for underscores instead of hyphens: -no_warning_for_no_symbols.
However, the flag is an ar/ranlib/libtool flag, not nm, AFAICT.

Fix tests on Windows

Open question: I don't know how all the toolchains fit together, but I noticed that only Clang.cpp handles -fmacro-prefix-map, but Clang.cpp, FreeBSD.cpp, and Gnu.cpp all handle -fdebug-prefix-map. I wasn't sure which pattern I should follow here, so right now this only adds the handling to Clang.cpp, please let me know if that's not appropriate in this case!

https://reviews.llvm.org/D83154

https://reviews.llvm.org/D83015

Awesome!

No problem, thanks!

@fhahn can you help land this? I don't have access. The failure does appear to be related but it seems like just applying this patch is failing, which I don't understand

FYI I actually removed that piece this morning since I felt like since this now supports -path-equivalence=.,foo which is the "expected" behavior from lldb, that was "good enough". lmk if you want me to add it back!

Update relative paths to include the leading ./

Fix test on windows

The new test failure appears unrelated to my changes

Update tests

Thanks I moved them to the bottom and I believe I fixed them on windows!

I've submitted a related change to accept relative paths for -fuse-ld https://reviews.llvm.org/D80660

Can someone land this for me? I don't have permissions to do that AFAIK

No worries, thanks!

No problem! Yes please! :)

• Hoist LLDB.framework headers copy out of condition

• Make headers a post build command

It seems like if this was a common occurrence, it would've been fixed earlier, so I'm wondering if there's a difference in the way I'm building lldb that causes this. Using cmake:

Add --no-weak to command guide

Update help wording

Revert unnecessary FileCheck prefix

Use count 0 instead of FileCheck for test