# CMAKE_INSTALL_PREFIX

Install directory used by `install()`.

If `make install` is invoked or `INSTALL` is built, this directory is prepended onto all install directories. This variable defaults to `/usr/local` on UNIX and `c:/Program Files/${PROJECT_NAME}` on Windows. See `CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT` for how a project might choose its own default.

On UNIX one can use the `DESTDIR` mechanism in order to relocate the whole installation. See `DESTDIR` for more information.

The installation prefix is also added to `CMAKE_SYSTEM_PREFIX_PATH` so that `find_package()`, `find_program()`, `find_library()`, `find_path()`, and `find_file()` will search the prefix for other software.

Note

Use the `GNUInstallDirs` module to provide GNU-style options for the layout of directories within the installation.