YACC(1)

NAME
       Yacc - an LALR(1) parser generator

SYNOPSIS
       yacc  [  -dlrtv  ] [ -b file_prefix ] [ -p symbol_prefix ]
       filename

DESCRIPTION
       Yacc reads the grammar specification in the file  filename
       and generates an LR(1) parser for it.  The parsers consist
       of a set of LALR(1) parsing tables and  a  driver  routine
       written  in  the  C  programming  language.  Yacc normally
       writes the parse tables and the driver routine to the file
       y.tab.c.

       The following options are available:
              -b file_prefix
                     The  -b  option changes the prefix prepended
                     to the  output  file  names  to  the  string
                     denoted  by file_prefix.  The default prefix
                     is the character y.
              -d     The -d option causes the header file y.tab.h
                     to be written.
              -l     If the -l option is not specified, yacc will
                     insert The  generated  code  to  the  user's
                     original  code.   If the -l option is speci-
                     fied, yacc will not insert the .TP  -p  sym-
                     bol_prefix  The -p option changes the prefix
                     prepended to yacc-generated symbols  to  the
                     string   denoted   by   symbol_prefix.   The
                     default prefix is the string yy.
              -r     The -r option causes yacc to  produce  sepa-
                     rate  files  for  code and tables.  The code
                     file is named y.code.c, and the tables  file
                     is named y.tab.c.
              -t     The   -t  option  changes  the  preprocessor
                     directives generated by yacc so that  debug-
                     ging  statements will be incorporated in the
                     compiled code.
              -v     The  -v  option  causes   a   human-readable
                     description  of  the  generated parser to be
                     written to the file y.output.

       If the environment variable  TMPDIR  is  set,  the  string
       denoted  by  TMPDIR will be used as the name of the direc-
       tory where the temporary files are created.

FILES
       y.code.c
       y.tab.c
       y.tab.h
       y.output
       /tmp/yacc.aXXXXXX
       /tmp/yacc.tXXXXXX
       /tmp/yacc.uXXXXXX

DIAGNOSTICS
       If there are rules that are never reduced, the  number  of
       such  rules  is  reported on standard error.  If there are
       any LALR(1) conflicts, the number of conflicts is reported
       on standard error.