CMAKE_INSTALL_MESSAGE — CMake 3.7.2 Documentation

# CMAKE_INSTALL_MESSAGE

Specify verbosity of installation script code generated by the `install()` command (using the `file(INSTALL)` command). For paths that are newly installed or updated, installation may print lines like:

    -- Installing: /some/destination/path

For paths that are already up to date, installation may print lines like:

    -- Up-to-date: /some/destination/path

The `CMAKE_INSTALL_MESSAGE` variable may be set to control which messages are printed:

`ALWAYS`
  Print both `Installing` and `Up-to-date` messages.
`LAZY`
  Print `Installing` but not `Up-to-date` messages.
`NEVER`
  Print neither `Installing` nor `Up-to-date` messages.

Other values have undefined behavior and may not be diagnosed.

If this variable is not set, the default behavior is `ALWAYS`.