[Openmp-dev] LIBOMP: TSAN functionality requested but not available

Joachim Protze via Openmp-dev openmp-dev at lists.llvm.org
Thu May 16 06:38:53 PDT 2019 

Hello Jan,

the logic to detect whether the TSan annotations might be supported on 
your platform is quite simple in the OpenMP runtime. We only tested this 
on x86_64 Linux, so this is the only platform that is flagged supported in

runtime/cmake/config-ix.cmake:280

You might just remove/modify that lines. But I remember that there are 
some issues with the weak implementation workflow in the TSan annotations.


I would suggest you to try this branch instead:

https://github.com/PRUNERS/openmp/tree/archer_80

I will push this to upstream soon, but did not find the time to update 
my patch in phabricator yet.

Best
Joachim

On 5/16/19 3:24 PM, Jan Studený via Openmp-dev wrote:
> Hello everyone,
> As the default clang is outputting false positives when running openmp 
> program I wanted to compile openmp with TSAN (thread sanitizer) support. 
> Unfortunately when I tried to compile openmp I got an error that says: 
> "TSAN functionality requested but not available". What does it mean not 
> available? Should I install something extra (what if it is the case)? 
> (maybe helps: currently when compiling`clang -fsanitize=thread -g 
> -O1 tiny_race.c` I get no error). Running on macOS 10.14.4 (18E226). 
> Here is the output of `cmake -DCMAKE_C_COMPILER=clang 
> -DCMAKE_CXX_COMPILER=clang++ -DLIBOMP_TSAN_SUPPORT=1 ../openmp` (the 
> openmp repository is cloned from https://github.com/llvm/llvm-project):
> 
> Thank you for any hints how to fix this error.
> Regards,
> Jan
> 
> -- The C compiler identification is Clang 8.0.0
> 
> -- The CXX compiler identification is Clang 8.0.0
> 
> -- Check for working C compiler: /usr/local/opt/llvm/bin/clang
> 
> -- Check for working C compiler: /usr/local/opt/llvm/bin/clang -- works
> 
> -- Detecting C compiler ABI info
> 
> -- Detecting C compiler ABI info - done
> 
> -- Detecting C compile features
> 
> -- Detecting C compile features - done
> 
> -- Check for working CXX compiler: /usr/local/opt/llvm/bin/clang++
> 
> -- Check for working CXX compiler: /usr/local/opt/llvm/bin/clang++ -- works
> 
> -- Detecting CXX compiler ABI info
> 
> -- Detecting CXX compiler ABI info - done
> 
> -- Detecting CXX compile features
> 
> -- Detecting CXX compile features - done
> 
> -- Performing Test OPENMP_HAVE_WERROR_FLAG
> 
> -- Performing Test OPENMP_HAVE_WERROR_FLAG - Success
> 
> -- Performing Test OPENMP_HAVE_STD_GNUPP11_FLAG
> 
> -- Performing Test OPENMP_HAVE_STD_GNUPP11_FLAG - Success
> 
> -- Performing Test OPENMP_HAVE_STD_CPP11_FLAG
> 
> -- Performing Test OPENMP_HAVE_STD_CPP11_FLAG - Success
> 
> -- Found PythonInterp: /usr/bin/python (found version "2.7.10")
> 
> -- Cannot find llvm-lit.
> 
> -- Please put llvm-lit in your PATH, set OPENMP_LLVM_LIT_EXECUTABLE to 
> its full path, or point OPENMP_LLVM_TOOLS_DIR to its directory.
> 
> CMake Warning at cmake/OpenMPTesting.cmake:22 (message):
> 
>    The check targets will not be available!
> 
> Call Stack (most recent call first):
> 
>    cmake/OpenMPTesting.cmake:40 (find_standalone_test_dependencies)
> 
>    CMakeLists.txt:49 (include)
> 
> 
> 
> -- Performing Test LIBOMP_HAVE_FNO_EXCEPTIONS_FLAG
> 
> -- Performing Test LIBOMP_HAVE_FNO_EXCEPTIONS_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_FNO_RTTI_FLAG
> 
> -- Performing Test LIBOMP_HAVE_FNO_RTTI_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_X_CPP_FLAG
> 
> -- Performing Test LIBOMP_HAVE_X_CPP_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WCAST_QUAL_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WCAST_QUAL_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNUSED_FUNCTION_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNUSED_FUNCTION_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNUSED_LOCAL_TYPEDEF_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNUSED_LOCAL_TYPEDEF_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNUSED_VALUE_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNUSED_VALUE_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNUSED_VARIABLE_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNUSED_VARIABLE_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_SWITCH_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_SWITCH_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_COVERED_SWITCH_DEFAULT_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_COVERED_SWITCH_DEFAULT_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_DEPRECATED_REGISTER_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_DEPRECATED_REGISTER_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_SIGN_COMPARE_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_SIGN_COMPARE_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_GNU_ANONYMOUS_STRUCT_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_GNU_ANONYMOUS_STRUCT_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNKNOWN_PRAGMAS_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_UNKNOWN_PRAGMAS_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_MISSING_FIELD_INITIALIZERS_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_MISSING_FIELD_INITIALIZERS_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_MISSING_BRACES_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_MISSING_BRACES_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_COMMENT_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_COMMENT_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_SELF_ASSIGN_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_SELF_ASSIGN_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_VLA_EXTENSION_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_VLA_EXTENSION_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WNO_FORMAT_PEDANTIC_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WNO_FORMAT_PEDANTIC_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_WSTRINGOP_OVERFLOW_FLAG
> 
> -- Performing Test LIBOMP_HAVE_WSTRINGOP_OVERFLOW_FLAG - Failed
> 
> -- Performing Test LIBOMP_HAVE_MSSE2_FLAG
> 
> -- Performing Test LIBOMP_HAVE_MSSE2_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_FTLS_MODEL_FLAG
> 
> -- Performing Test LIBOMP_HAVE_FTLS_MODEL_FLAG - Success
> 
> -- Performing Test LIBOMP_HAVE_MMIC_FLAG
> 
> -- Performing Test LIBOMP_HAVE_MMIC_FLAG - Failed
> 
> -- Performing Test LIBOMP_HAVE_M32_FLAG
> 
> -- Performing Test LIBOMP_HAVE_M32_FLAG - Failed
> 
> -- Looking for pthread.h
> 
> -- Looking for pthread.h - found
> 
> -- Looking for pthread_create
> 
> -- Looking for pthread_create - found
> 
> -- Found Threads: TRUE
> 
> -- Found Perl: /usr/bin/perl (found version "5.18.2")
> 
> -- Performing Test LIBOMP_HAVE_VERSION_SYMBOLS
> 
> -- Performing Test LIBOMP_HAVE_VERSION_SYMBOLS - Failed
> 
> -- Performing Test LIBOMP_HAVE___BUILTIN_FRAME_ADDRESS
> 
> -- Performing Test LIBOMP_HAVE___BUILTIN_FRAME_ADDRESS - Success
> 
> -- Performing Test LIBOMP_HAVE_WEAK_ATTRIBUTE
> 
> -- Performing Test LIBOMP_HAVE_WEAK_ATTRIBUTE - Success
> 
> -- Looking for include files windows.h, psapi.h
> 
> -- Looking for include files windows.h, psapi.h - not found
> 
> -- Looking for EnumProcessModules in psapi
> 
> -- Looking for EnumProcessModules in psapi - not found
> 
> CMake Error at runtime/cmake/LibompUtils.cmake:26 (message):
> 
>    LIBOMP: TSAN functionality requested but not available
> 
> Call Stack (most recent call first):
> 
>    runtime/CMakeLists.txt:325 (libomp_error_say)
> 
> 
> 
> -- Configuring incomplete, errors occurred!
> 
> See also "/tmp/llvm-project/build/CMakeFiles/CMakeOutput.log".
> 
> See also "/tmp/llvm-project/build/CMakeFiles/CMakeError.log".
> 
> 
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