+# Get root dir locally, going up two levels from the exec:
+GET_FILENAME_COMPONENT(_tmp_ROOT_DIR "${SPHINX_EXECUTABLE}" PATH)
+GET_FILENAME_COMPONENT(_tmp_ROOT_DIR "${_tmp_ROOT_DIR}" PATH)
+SET(SPHINX_PYTHONPATH "${_tmp_ROOT_DIR}/lib/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}/site-packages")
+