With RPM programs, developers usually round out the option table with three special options: POPT_AUTOALIAS, POPT_AUTOHELP, and POPT_TABLEEND. The POPT_AUTOALIAS option sets up a table of aliases:

#define POPT_AUTOALIAS { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptAliasOptions, \

0, "Options implemented via popt alias/exec:", NULL },

This option refers to the table, poptAliasOptions. You can use the POPT_ARG_INCLUDE_TABLE argInfo type to include another table of options. These options get filled in from popt aliases. In addition, within RPM programs, another table, rpmcliAllPoptTable, holds a set of options common to all RPM programs.

The POPT_AUTOHELP option supports standard help options. The POPT_AUTOHELP macro adds in automatic support for -?, --help, and --usage options.

#define POPT_AUTOHELP { NULL, '\0', POPT_ARG_INCLUDE_TABLE, poptHelpOptions, \

0, "Help options:", NULL },

The POPT_TABLEEND option defines an empty option to mark the end of the table. You must include an empty option to end the table, and POPT_TABLEEND makes this easy.

#define POPT_TABLEEND { NULL, '\0', 0, 0, 0, NULL, NULL }

Note

The code in Listing 16-3, in the "Running a Popt Example" section later in this chapter, shows a full option table.