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 BISON(1)                        bison 3.2.2                        BISON(1)
 User Commands                                                 User Commands

                                November 2018



 NAME
      bison - GNU Project parser generator (yacc replacement)

 SYNOPSIS
      bison [,OPTION/]... ,FILE/

 DESCRIPTION
      Bison is a parser generator in the style of yacc(1).  It should be
      upwardly compatible with input files designed for yacc.

      Input files should follow the yacc convention of ending in .y.  Unlike
      yacc, the generated files do not have fixed names, but instead use the
      prefix of the input file.  Moreover, if you need to put C++ code in
      the input file, you can end his name by a C++-like extension (.ypp or
      .y++), then bison will follow your extension to name the output file
      (.cpp or .c++).  For instance, a grammar description file named
      parse.yxx would produce the generated parser in a file named
      parse.tab.cxx, instead of yacc's y.tab.c or old Bison version's
      parse.tab.c.

      This description of the options that can be given to bison is adapted
      from the node Invocation in the bison.texi manual, which should be
      taken as authoritative.

      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 =.

      Generate a deterministic LR or generalized LR (GLR) parser employing
      LALR(1), IELR(1), or canonical LR(1) parser tables.  IELR(1) and
      canonical LR(1) support is experimental.

      Mandatory arguments to long options are mandatory for short options
      too.  The same is true for optional arguments.

    Operation modes:
      -h, --help
           display this help and exit

      -V, --version
           output version information and exit

      --print-localedir
           output directory containing locale-dependent data

      --print-datadir
           output directory containing skeletons and XSLT



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 BISON(1)                        bison 3.2.2                        BISON(1)
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                                November 2018



      -y, --yacc
           emulate POSIX Yacc

      -W, --warnings[=,CATEGORY/]
           report the warnings falling in CATEGORY

      -f, --feature[=,FEATURE/]
           activate miscellaneous features

    Parser:
      -L, --language=,LANGUAGE/
           specify the output programming language

      -S, --skeleton=,FILE/
           specify the skeleton to use

      -t, --debug
           instrument the parser for tracing same as '-Dparse.trace'

      --locations
           enable location support

      -D, --define=NAME[=,VALUE/]
           similar to '%define NAME "VALUE"'

      -F, --force-define=NAME[=,VALUE/]
           override '%define NAME "VALUE"'

      -p, --name-prefix=,PREFIX/
           prepend PREFIX to the external symbols deprecated by
           '-Dapi.prefix=PREFIX'

      -l, --no-lines
           don't generate '#line' directives

      -k, --token-table
           include a table of token names

    Output:
      --defines[=,FILE/]
           also produce a header file

      -d   likewise but cannot specify FILE (for POSIX Yacc)

      -r, --report=,THINGS/
           also produce details on the automaton

      --report-file=,FILE/
           write report to FILE



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 BISON(1)                        bison 3.2.2                        BISON(1)
 User Commands                                                 User Commands

                                November 2018



      -v, --verbose
           same as '--report=state'

      -b, --file-prefix=,PREFIX/
           specify a PREFIX for output files

      -o, --output=,FILE/
           leave output to FILE

      -g, --graph[=,FILE/]
           also output a graph of the automaton

      -x, --xml[=,FILE/]
           also output an XML report of the automaton (the XML schema is
           experimental)

    Warning categories include:
      'midrule-values'
           unset or unused midrule values

      'yacc'
           incompatibilities with POSIX Yacc

      'conflicts-sr'
           S/R conflicts (enabled by default)

      'conflicts-rr'
           R/R conflicts (enabled by default)

      'deprecated'
           obsolete constructs

      'empty-rule'
           empty rules without %empty

      'precedence'
           useless precedence and associativity

      'other'
           all other warnings (enabled by default)

      'all'
           all the warnings except 'yacc'

      'no-CATEGORY'
           turn off warnings in CATEGORY

      'none'
           turn off all the warnings



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 BISON(1)                        bison 3.2.2                        BISON(1)
 User Commands                                                 User Commands

                                November 2018



      'error[=CATEGORY]'
           treat warnings as errors

    THINGS is a list of comma separated words that can include:
      'state'
           describe the states

      'itemset'
           complete the core item sets with their closure

      'lookahead'
           explicitly associate lookahead tokens to items

      'solved'
           describe shift/reduce conflicts solving

      'all'
           include all the above information

      'none'
           disable the report

    FEATURE is a list of comma separated words that can include:
      'caret'
           show errors with carets

      'all'
           all of the above

      'none'
           disable all of the above

 AUTHOR
      Written by Robert Corbett and Richard Stallman.

 REPORTING BUGS
      Report bugs to <bug-bison@gnu.org>.
      GNU Bison home page: <http://www.gnu.org/software/bison/>.
      General help using GNU software: <http://www.gnu.org/gethelp/>.
      For complete documentation, run: info bison.

 COPYRIGHT
      Copyright c 2018 Free Software Foundation, Inc.
      This is free software; see the source for copying conditions.  There
      is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
      PARTICULAR PURPOSE.

 SEE ALSO
      lex(1), flex(1), yacc(1).



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 BISON(1)                        bison 3.2.2                        BISON(1)
 User Commands                                                 User Commands

                                November 2018



      The full documentation for bison is maintained as a Texinfo manual.
      If the info and bison programs are properly installed at your site,
      the command

           info bison

      should give you access to the complete manual.













































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