message: Extract LLVM to specific directory.
diff: @@ -99,6 +99,8 @@ if(NOT EXISTS ${CLANG_ARCHIVE_EXTRACT_DIR})
  message(STATUS "Extracting downloaded LLVM with CMake built-in tar ...")
  # CMake has builtin support for tar via the -E flag
  execute_process(COMMAND ${CMAKE_COMMAND} -E tar -xf ${CLANG_ARCHIVE_FILE}
  + # Extract to here to allow running cmake from everywhere
  + WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
  OUTPUT_QUIET)
  endif()
  endif()
  