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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 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

       -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-bison@gnu.org>.

COPYRIGHT
       Copyright © 2010 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).

       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.

bison 2.4.3			  August 2010			      BISON(1)
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