ports/devel/gengetopt/pkg/DESCR

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gengetopt generates a C function that uses getopt_long function to parse
the command line options, to validate them and fill a struct.
gengetopt is perfect if you are too lazy to write all stuff required to
call getopt_long, and when you have a program and wish it took options.
Generated code works if you use GNU Autoconf or GNU Automake.