Revision control
++ cmake_minimum_required(VERSION 3.16)
++
++ if(EXISTS "${PRIVATE_CONTENT_FILE}")
++ file(READ "${PRIVATE_CONTENT_FILE}" PRIVATE_CONTENT)
++ endif()
++
++ if(NOT EXISTS "${IN_FILE}")
++ message(FATAL_ERROR "Input file ${IN_FILE} doesn't exists")
++ endif()
++
++ if(OUT_FILE STREQUAL "")
++ message(FATAL_ERROR "Output file is not specified")
++ endif()
++
++ configure_file("${IN_FILE}" "${OUT_FILE}" @ONLY)