Deleting Makefile entries

If you do not want the Makefile to produce maps for a particular database, perform the following procedure:

1. Edit the Makefile and first delete the name of the database from the ``all'' rule (that is, the line that starts with the word ``all:'').

2. Look for the rule for that database (that is, the rule at the end of the Makefile that, for example, for the database hosts, says ``hosts: hosts.time'') and either delete the line or, to be safe, comment the line out by prepending a ``#'' to the line.