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       bison - GNU Project parser generator (yacc replacement)


       bison  [  -b  file-prefix  ]  [  --file-prefix=file-prefix  ]  [ -d ] [
       --defines ] [  -l  ]  [  --no-lines  ]  [  -o  outfile  ]  [  --output-
       file=outfile  ] [ -p prefix ] [ --name-prefix=prefix ] [ -t ] [ --debug
       ] [ -v ] [ --verbose ] [ -V ] [ --version  ]  [  -y  ]  [  --yacc  ]  [
       --fixed-output-files ] file


       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.  For instance,  a  grammar  description  file
       named  parse.y  would  produce  the  generated  parser  in a file named, instead of yacc’s

       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 =.

       -b file-prefix
              Specify a prefix to use for all bison output  file  names.   The
              names  are chosen as if the input file were named file-prefix.c.

              Write an extra output file containing macro definitions for  the
              token  type  names defined in the grammar and the semantic value
              type YYSTYPE, as well as a few extern variable declarations.

              If the parser output file is named  name.c  then  this  file  is
              named name.h.

              This  output file is essential if you wish to put the definition
              of yylex in a separate source file, because yylex  needs  to  be
              able to refer to token type codes and the variable yylval.

              Don’t  put  any  #line preprocessor commands in the parser file.
              Ordinarily bison puts them in the parser  file  so  that  the  C
              compiler  and  debuggers  will associate errors with your source
              file, the grammar file.  This option causes  them  to  associate
              errors  with  the parser file, treating it an independent source
              file in its own right.

       -o outfile
              Specify the name outfile for the parser file.

              The other output files’ names are constructed  from  outfile  as
              described under the -v and -d switches.

       -p prefix
              Rename  the  external  symbols  used  in the parser so that they
              start with prefix instead of yy.  The precise  list  of  symbols
              renamed is yyparse, yylex, yyerror, yylval, yychar, and yydebug.

              For example, if you use -p c, the names become cparse, clex, and
              so on.

              Output  a  definition of the macro YYDEBUG into the parser file,
              so that the debugging facilities are compiled.

              Write an extra output file containing  verbose  descriptions  of
              the  parser  states and what is done for each type of look-ahead
              token in that state.

              This file also describes all the conflicts, both those  resolved
              by operator precedence and the unresolved ones.

              The file’s name is made by removing .tab.c or .c from the parser
              output file name, and adding .output instead.

              Therefore, if the input file is foo.y, then the parser  file  is
              called  by  default.   As  a consequence, the verbose
              output file is called foo.output.

              Print the version number of bison.

              Equivalent to -o;  the  parser  output  file  is  called
    ,  and the other outputs are called y.output and
              The purpose of this switch is to imitate yacc’s output file name
              conventions.   Thus,  the  following shell script can substitute
              for yacc:

              bison -y $*

       The long-named options can be introduced with ‘+’ as well as ‘--’,  for
       compatibility  with previous releases.  Eventually support for ‘+’ will
       be removed, because it is incompatible with the POSIX.2 standard.


       /usr/local/lib/bison.simple   simple parser
       /usr/local/lib/bison.hairy    complicated parser


       The Bison Reference Manual, included as the file bison.texinfo  in  the
       bison source distribution.


       Self explanatory.