message: [OpenMP] libomptarget: Disable on MacOS X
  Disable compilation of libomptarget on MacOS X.
diff: @@ -4,6 +4,9 @@ set(OPENMP_LLVM_TOOLS_DIR "" CACHE PATH "Path to LLVM tools for testing")
  add_subdirectory(runtime)
  -if (NOT WIN32)
  +# Currently libomptarget cannot be compiled on Windows or MacOS X.
  +# Since the device plugins are only supported on Linux anyway,
  +# there is no point in trying to compile libomptarget on other OSes.
  +if (NOT (WIN32 OR ${CMAKE_SYSTEM_NAME} MATCHES "Darwin"))
  add_subdirectory(libomptarget)
  endif()
  