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BISON(1)                         User Commands                        BISON(1)



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.texinfo 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 LALR(1) and GLR parsers.

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

   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

       -y, --yacc
              emulate POSIX Yacc

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

   Parser:
       -L, --language=LANGUAGE
              specify the output programming language (this is an experimental feature)

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

       -t, --debug
              instrument the parser for debugging

       --locations
              enable locations computation

       -p, --name-prefix=PREFIX
              prepend PREFIX to the external symbols

       -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

       -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

       'all'  all the warnings

       'no-CATEGORY'
              turn off warnings in CATEGORY

       'none' turn off all the warnings

       'error'
              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

AUTHOR
       Written by Robert Corbett and Richard Stallman.

REPORTING BUGS
       Report bugs to <bug-bisonATgnu.org>.

COPYRIGHT
       Copyright (C) 2008 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABIL-
       ITY or FITNESS FOR A PARTICULAR PURPOSE.

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

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

              info bison

       should give you access to the complete manual.



bison 2.4.1                      December 2008                        BISON(1)