CPACK_INSTALL_SCRIPT
Extra CMake script provided by the user.
If set this CMake script will be executed by CPack during its local [CPack-private] installation which is done right before packaging the files. The script is not called by e.g.: make install.
    © 2000–2019 Kitware, Inc. and Contributors
Licensed under the BSD 3-clause License.
    https://cmake.org/cmake/help/v3.5/variable/CPACK_INSTALL_SCRIPT.html