text: if(NOT IS_DIRECTORY "${EXPECTED_WORKING_DIR}")
    message(FATAL_ERROR "EXPECTED_WORKING_DIR is not a directory: ${EXPECTED_WORKING_DIR}")
  endif()
  
  foreach(d CMAKE_BINARY_DIR CMAKE_CURRENT_BINARY_DIR CMAKE_SOURCE_DIR CMAKE_CURRENT_SOURCE_DIR)
    if(NOT DEFINED ${d})
      message(FATAL_ERROR "${d} is not defined")
    endif()
    if(EXPECTED_WORKING_DIR STREQUAL "${${d}}")
      message(STATUS "${d} is the expected working directory (${EXPECTED_WORKING_DIR})")
    else()
      message(FATAL_ERROR "${d} = \"${${d}}\" is not the expected working directory (${EXPECTED_WORKING_DIR})")
    endif()
  endforeach()
  