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

Ted Woodward via lldb-dev lldb-dev at lists.llvm.org
Tue Nov 7 10:36:26 PST 2017

We had the same problem internally on our bots. A clean build blew away the cmake caches and fixed the problem.




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From: lldb-dev [mailto:lldb-dev-bounces at lists.llvm.org] On Behalf Of Don Hinton via lldb-dev
Sent: Tuesday, November 07, 2017 12:28 PM
To: Jim Ingham <jingham at apple.com>
Cc: LLDB <lldb-dev at lists.llvm.org>
Subject: Re: [lldb-dev] Bot failure with new "in tree compiler" changes (r316728) in llvm.org bot


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 <mailto:lldb-dev at lists.llvm.org> > wrote:

The lldb_cmake GreenDragon bot is now failing, e.g.:


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?


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