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

[Jim Ingham via lldb-dev]

NP, I'll find somebody who can initiate a clean rebuild.

Jim


> On Nov 7, 2017, at 10:28 AM, Pavel Labath <labath at google.com> wrote:
> 
> You probably just need to nuke the build folder.
> 
> The reason for that is that before the patch the LLDB_TEST_C_COMPILER
> variable was used for a different purpose (and usually empty), where
> as now it's set by default to the in-tree clang. However, cmake will
> not overwrite the cached value by design. (I could have worked around
> that in cmake, but I only noticed that issue after landing the
> change.)
> 
> Erasing the build folder should let the new and correct default kick
> in. If you run the check-lldb target then it will now use the in-tree
> clang instead of the system compiler for using tests.
> 
> sorry about the trouble,
> pl
> 
> 
> 
> On 7 November 2017 at 18:21, 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
>> 
>> _______________________________________________
>> lldb-dev mailing list
>> lldb-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev