Once you have successfully tested the software, you are ready to install it. You will need to have write permission to the installation directories you specified when you ran configure. By default OpenLDAP Software is installed in /usr/local. If you changed this setting with the --prefix configure option, it will be installed in the location you provided.
Typically, the installation requires super-user privileges. From the top level OpenLDAP source directory, type:
su root -c 'make install'
and enter the appropriate password when requested.
You should examine the output of this command carefully to make sure everything is installed correctly. You will find the configuration files for slapd(8) in /usr/local/etc/openldap by default. See the chapter Configuring slapd for additional information.