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bison



SYNOPSIS

       bison  [  -b file-prefix ] [ --file-prefix=file-prefix ] [
       -d ] [ --defines=defines-file ] [ -g  ]  [  --graph=graph-
       file ] [ -k ] [ --token-table ] [ -l ] [ --no-lines ] [ -n
       ] [ --no-parser ] [ -o outfile ] [ --output-file=outfile ]
       [  -p prefix ] [ --name-prefix=prefix ] [ -t ] [ --debug ]
       [ -v ] [ --verbose ] [ -V ] [ --version ] [ -y ] [  --yacc
       ] [ -h ] [ --help ] [ --fixed-output-files ] 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  gener­
       ated  parser  in  a  file  named parse.tab.cxx, instead of
       yacc's y.tab.c or old Bison versions 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 indi­
       cated 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 =.

   OPTIONS
       -b file-prefix
       --file-prefix=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.

       -d
              Write an extra output file containing macro defini­
              tions for the token type names defined in the gram­
              mar 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.

              foo.y , the VCG output file will be foo.vcg.

       --graph=graph-file
              The  behaviour  of  --graph  is  the  same  than -g
              option. The only  difference  is  that  it  has  an
              optionnal  argument which is the name of the output
              graph filename.

       -k
       --token-table
              This switch causes the name.tab.c output to include
              a  list of token names in order by their token num­
              bers;  this is defined in the array yytname.   Also
              generated  are #defines for YYNTOKENS, YYNNTS, YYN­
              RULES, and YYNSTATES.

       -l
       --no-lines
              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 inde­
              pendent source file in its own right.

       -n
       --no-parser
              Do not generate the parser code  into  the  output;
              generate    only   declarations.    The   generated
              name.tab.c file will have  only  constant  declara­
              tions.   In  addition, a name.act file is generated
              containing a switch statement body  containing  all
              the translated actions.

       -o outfile
       --output-file=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
       --name-prefix=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.

              solved ones.

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

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

       -V
       --version
              Print the version number of bison and exit.

       -h
       --help Print a summary of the options to bison and exit.

       -y
       --yacc
       --fixed-output-files
              Equivalent to -o y.tab.c; the parser output file is
              called  y.tab.c,  and  the other outputs are called
              y.output and y.tab.h.  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 $*


FILES

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


ENVIRONMENT VARIABLES

       BISON_SIMPLE
              If  this is set, it specifies the location in which
              the bison.simple parser can be found.

       BISON_HAIRY
              If this is set, it specifies the location in  which
              the bison.hairy parser can be found.


SEE ALSO

       yacc(1)
       The   Bison   Reference   Manual,  included  as  the  file
       bison.texinfo in the bison source distribution.


DIAGNOSTICS

       Self explanatory.

  
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