The LDM system requires that the host computer be configured before the LDM is installed. See LDM Reference: LDM Preinstallation Steps for instructions.
Given the variety of UNIX®-like operating systems, we recommend that the LDM system be installed from the source-code distribution. See LDM Reference: LDM Source-Code Installation for instructions.
Installing LDM documentation is optional because all of it is already available on-line and the on-line version can be more up-to-date than a local copy of the documentation. Nevertheless, if you want a local copy of the documentation, then see LDM Reference: Installing LDM Documentation for instructions.