vitalybuka wrote:

> > > > Actually this PR is the case of 
> > > > https://lab.llvm.org/buildbot/#/builders/164/builds/3908, not #113491
> > > 
> > > 
> > > Sorry about that.
> > > Are you able to dig up any of the cmake configure logs from these builds, 
> > > so that we can figure out how this ends up breaking things? Because as in 
> > > most of these cases, the visible output in the buildbot logs mostly say 
> > > that some configure checks end up going the wrong way, but we can't 
> > > really see why.
> > 
> > 
> > @vitalybuka Are you able to pull out some details to help figure out what 
> > this really broke here?
> 
> Ping @vitalybuka - can you help out with retrying this PR and providing some 
> details about what went wrong, so that we can have a path towards merging 
> this again?

Sure, I can retry the build locally, but would be more convenient for you to 
just reproduce according to  
https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild ?
libcxx step is very early, so no need to wait for entire build.

I guess you can just copy cmake invocation from 
https://lab.llvm.org/buildbot/#/builders/sanitizer-x86_64-linux-bootstrap-msan/
you need steps:
1.  stage1 build all
2.  stage2/msan build libcxx


https://github.com/llvm/llvm-project/pull/108357
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