Bison supports both traditional single-letter options and mnemonic long option names. Long option names are indicated with -- instead of -. Abbreviations for option names are allowed as long as they are unique. When a long option takes an argument, like --file-prefix, connect the option name and the argument with ‘=’.
Here is a list of options that can be used with Bison. It is followed by a cross key alphabetized by long option.