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-.\" Copyright (c) 1989, 1990 The Regents of the University of California.
-.\" All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" Robert Paul Corbett.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\" must display the following acknowledgement:
-.\" This product includes software developed by the University of
-.\" California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" @(#)yacc.1 5.8 (Berkeley) 5/24/93
-.\"
-.TH YACC 1 "May 24, 1993"
-.UC 6
-.SH NAME
-yacc \- an LALR(1) parser generator
-.SH SYNOPSIS
-.B yacc [ -dlrtv ] [ -b
-.I file_prefix
-.B ] [ -p
-.I symbol_prefix
-.B ]
-.I filename
-.SH DESCRIPTION
-.I Yacc
-reads the grammar specification in the file
-.I 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.
-.I Yacc
-normally writes the parse tables and the driver routine to the file
-.IR y.tab.c.
-.PP
-The following options are available:
-.RS
-.TP
-\fB-b \fIfile_prefix\fR
-The
-.B -b
-option changes the prefix prepended to the output file names to
-the string denoted by
-.IR file_prefix.
-The default prefix is the character
-.IR y.
-.TP
-.B -d
-The \fB-d\fR option causes the header file
-.IR y.tab.h
-to be written.
-.TP
-.B -l
-If the
-.B -l
-option is not specified,
-.I yacc
-will insert #line directives in the generated code.
-The #line directives let the C compiler relate errors in the
-generated code to the user's original code.
-If the \fB-l\fR option is specified,
-.I yacc
-will not insert the #line directives.
-Any #line directives specified by the user will be retained.
-.TP
-\fB-p \fIsymbol_prefix\fR
-The
-.B -p
-option changes the prefix prepended to yacc-generated symbols to
-the string denoted by
-.IR symbol_prefix.
-The default prefix is the string
-.IR yy.
-.TP
-.B -r
-The
-.B -r
-option causes
-.I yacc
-to produce separate files for code and tables. The code file
-is named
-.IR y.code.c,
-and the tables file is named
-.IR y.tab.c.
-.TP
-.B -t
-The
-.B -t
-option changes the preprocessor directives generated by
-.I yacc
-so that debugging statements will be incorporated in the compiled code.
-.TP
-.B -v
-The
-.B -v
-option causes a human-readable description of the generated parser to
-be written to the file
-.IR y.output.
-.RE
-.PP
-If the environment variable TMPDIR is set, the string denoted by
-TMPDIR will be used as the name of the directory where the temporary
-files are created.
-.SH FILES
-.IR y.code.c
-.br
-.IR y.tab.c
-.br
-.IR y.tab.h
-.br
-.IR y.output
-.br
-.IR /tmp/yacc.aXXXXXX
-.br
-.IR /tmp/yacc.tXXXXXX
-.br
-.IR /tmp/yacc.uXXXXXX
-.SH 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.
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