readable var _opt_clibdir: OptionString = new OptionString("NIT C library directory", "--clibdir")
readable var _opt_bindir: OptionString = new OptionString("NIT tools directory", "--bindir")
readable var _opt_compdir: OptionString = new OptionString("Intermediate compilation directory", "--compdir")
readable var _opt_extension_prefix: OptionString = new OptionString("Append prefix to file extension", "-p", "--extension-prefix")
readable var _opt_clibdir: OptionString = new OptionString("NIT C library directory", "--clibdir")
readable var _opt_bindir: OptionString = new OptionString("NIT tools directory", "--bindir")
readable var _opt_compdir: OptionString = new OptionString("Intermediate compilation directory", "--compdir")
readable var _opt_extension_prefix: OptionString = new OptionString("Append prefix to file extension", "-p", "--extension-prefix")