message: [CMake] Make openmp build under runtimes/
  runtimes/CMakeLists.txt in LLVM passes OPENMP_STANDALONE_BUILD.
diff: @@ -17,7 +17,8 @@ set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})
  # Standalone build or part of LLVM?
  set(LIBOMP_STANDALONE_BUILD FALSE)
  -if("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}" OR
  +if(OPENMP_STANDALONE_BUILD OR
  + "${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}" OR
  "${CMAKE_SOURCE_DIR}/runtime" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
  project(libomp C CXX)
  set(LIBOMP_STANDALONE_BUILD TRUE)
  