When you are creating a new EGL project whose code will access an LDAP-compliant server, select the EGL project feature EGL with LDAP Support by updating an Advanced Setting. Similarly, when you are adding LDAP support to an existing project, add the EGL project feature EGL with LDAP Support from the Properties of the project. The effect in each case is to add the server-access files LDAPExternalTypes.egl and LDAPLib.egl to the project.
For more information about LDAP, see Sample: EGL LDAP access.