Usage: racc [options] <input>
    -o, --output-file=PATH           output file name [<input>.tab.rb]
    -t, --debug                      Outputs debugging parser.
    -g                               Equivalent to -t (obsolete).
    -v, --verbose                    Creates <filename>.output log file.
    -O, --log-file=PATH              Log file name [<input>.output]
    -e, --executable [RUBYPATH]      Makes executable parser.
    -E, --embedded                   Embeds Racc runtime in output.
        --line-convert-all           Converts line numbers of user codes.
    -l, --no-line-convert            Never convert line numbers.
    -a, --no-omit-actions            Never omit actions.
        --superclass=CLASSNAME       Uses CLASSNAME instead of Racc::Parser.
    -C, --check-only                 Checks syntax and quit immediately.
    -S, --output-status              Outputs internal status time to time.
    -P                               Enables generator profile
    -D flags                         Flags for Racc debugging (do not use).
        --version                    Prints version and quit.
        --runtime-version            Prints runtime version and quit.
        --copyright                  Prints copyright and quit.
        --help                       Prints this message and quit.