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

[Jim Ingham via lldb-dev]

Good news.  I got somebody to kick the llvm.org bots, so sounds like this should solve the problem.

Jim


> On Nov 7, 2017, at 10:36 AM, Ted Woodward <ted.woodward at codeaurora.org> wrote:
> 
> We had the same problem internally on our bots. A clean build blew away the cmake caches and fixed the problem.
>  
> Ted
> --
> Qualcomm Innovation Center, Inc.
> The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
>  
> 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> 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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