| CPACK_PACKAGING_INSTALL_PREFIX | |
| ------------------------------ | |
| The prefix used in the built package. | |
| Each CPack generator has a default value (like ``/usr``). This default | |
| value may be overwritten from the ``CMakeLists.txt`` or the :manual:`cpack(1)` | |
| command line by setting an alternative value. Example: | |
| :: | |
| set(CPACK_PACKAGING_INSTALL_PREFIX "/opt") | |
| This is not the same purpose as :variable:`CMAKE_INSTALL_PREFIX` which is used | |
| when installing from the build tree without building a package. |