[lldb-dev] Bot failure with new "in tree compiler" changes (r316728) in llvm.org bot

[Don Hinton via lldb-dev]

I hit the same problem last week.  I ended up blowing away my build
directory, and the problem went away.

Probably a cache issue, but I was unable to reproduce...

On Tue, Nov 7, 2017 at 10:21 AM, Jim Ingham via lldb-dev <
lldb-dev at lists.llvm.org> wrote:

> The lldb_cmake GreenDragon bot is now failing, e.g.:
>
> http://lab.llvm.org:8080/green/view/LLDB/job/lldb_cmake/1703/consoleFull#
> 589016626e9a0fee5-ebcc-4238-a641-c5aa112c323e
>
> This looks related to Pavel's change:
>
> > r316728 | labath | 2017-10-26 19:24:04 -0700 (Thu, 26 Oct 2017) | 18
> lines
> >
> > Default to using in-tree clang for building test executables
> >
> > Summary:
> > Using the in-tree clang should be the default test configuration as that
> > is the one compiler that we can be sure everyone has (better
> > reproducibility of test results). Also, it should hopefully reduce the
> > impact of pr35040.
> >
> > This also reduces the number of settings which control the compiler
> > used. LLDB_TEST_C_COMPILER is used for C files and
> > LLDB_TEST_CXX_COMPILER for C++ files. Both of the settings default to
> > the in-tree clang.
> >
> > Reviewers: zturner
> >
> > Subscribers: mgorny, davide, lldb-commits
> >
> > Differential Revision: https://reviews.llvm.org/D39215
> >
>
> The error is:
>
> CMake Error at tools/lldb/CMakeLists.txt:78 (message):
>
>   LLDB test compilers not specified.  Tests will not run
>
>
> Does the bot need to be reconfigured for these changes?
>
> Jim
>
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