If you use samhain in a client/server setup, the client needs to authenticate to the server using a password that is located within the client executable, at one of several possible places (where the valid place for your particular build is chosen at random at compile time). >apt-get cpio.
The Debian package thus created will not initialize the database automatically upon installation. It will be located in the parent directory of the source directory (that's just the way the Debian build system works).