Import byacc from invisible island, it brings us lots of compatibilities with

bison, keeping full compatibility with our previous yacc implementation.

Also bring the ability to create reentrant parser

This fix bin/140309 [1]

PR:		bin/140309 [1]
Submitted by:	Philippe Pepiot <ksh@philpep.org> [1]
Approved by:	des (mentor)
MFC after:	1 month

15 files changed, 584 insertions, 0 deletions

diff --git a/contrib/byacc/package/byacc.spec b/contrib/byacc/package/byacc.spec
new file mode 100644
index 0000000..8f1fbb5
--- /dev/null
+++ b/contrib/byacc/package/byacc.spec
@@ -0,0 +1,60 @@
+Summary: byacc - public domain Berkeley LALR Yacc parser generator
+%define AppProgram byacc
+%define AppVersion 20120115
+%define UseProgram yacc
+# $XTermId: byacc.spec,v 1.13 2012/01/15 19:30:29 tom Exp $
+Name: %{AppProgram}
+Version: %{AppVersion}
+Release: 1
+License: Public Domain, MIT
+Group: Applications/Development
+URL: ftp://invisible-island.net/%{AppProgram}
+Source0: %{AppProgram}-%{AppVersion}.tgz
+Packager: Thomas Dickey <dickey@invisible-island.net>
+
+%description
+This package provides a parser generator utility that reads a grammar
+specification from a file 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.  It has a public domain
+license which includes the generated C.
+
+%prep
+
+%setup -q -n %{AppProgram}-%{AppVersion}
+
+%build
+
+INSTALL_PROGRAM='${INSTALL}' \
+	./configure \
+		--program-prefix=b \
+		--target %{_target_platform} \
+		--prefix=%{_prefix} \
+		--bindir=%{_bindir} \
+		--libdir=%{_libdir} \
+		--mandir=%{_mandir}
+
+make
+
+%install
+[ "$RPM_BUILD_ROOT" != "/" ] && rm -rf $RPM_BUILD_ROOT
+
+make install                    DESTDIR=$RPM_BUILD_ROOT
+( cd $RPM_BUILD_ROOT%{_bindir} && ln -s %{AppProgram} %{UseProgram} )
+
+strip $RPM_BUILD_ROOT%{_bindir}/%{AppProgram}
+
+%clean
+[ "$RPM_BUILD_ROOT" != "/" ] && rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(-,root,root)
+%{_prefix}/bin/%{AppProgram}
+%{_prefix}/bin/%{UseProgram}
+%{_mandir}/man1/%{AppProgram}.*
+
+%changelog
+# each patch should add its ChangeLog entries here
+
+* Sun Jun 06 2010 Thomas Dickey
+- initial version
diff --git a/contrib/byacc/package/debian/changelog b/contrib/byacc/package/debian/changelog
new file mode 100644
index 0000000..98c08e2
--- /dev/null
+++ b/contrib/byacc/package/debian/changelog
@@ -0,0 +1,223 @@
+byacc (20120115) unstable; urgency=low
+
+  * add testcases, improve documentation for "-s" option.
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Fri, 13 Jan 2012 20:44:34 -0500
+
+byacc (20111219) unstable; urgency=low
+
+  * add "-s" option.
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Mon, 19 Dec 2011 20:54:09 -0500
+
+byacc (20110908) unstable; urgency=low
+
+  * add "-i" option.
+  * add error-check in reader.c
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Mon, 05 Sep 2011 20:05:51 -0400
+
+byacc (20101229) unstable; urgency=low
+
+  * fixes from Christos Zoulos
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Wed, 29 Dec 2010 13:03:50 -0500
+
+byacc (20101226) unstable; urgency=low
+
+  * portability fix for MinGW
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Sat, 25 Dec 2010 19:37:54 -0500
+
+byacc (20101127) unstable; urgency=low
+
+  * corrected yyerror use of %parse-param data
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Sat, 27 Nov 2010 12:32:00 -0500
+
+byacc (20101126) unstable; urgency=low
+
+  * additional fix to generated code to avoid symbol conflict
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Fri, 26 Nov 2010 04:23:08 -0500
+
+byacc (20101124) unstable; urgency=low
+
+  * amend fix for Red Hat #112617 to restore warning message.
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Mon, 22 Nov 2010 08:21:23 -0500
+
+byacc (20101122) unstable; urgency=low
+
+  * fix for generated header to avoid symbol conflict
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Mon, 22 Nov 2010 08:21:23 -0500
+
+byacc (20100610) unstable; urgency=low
+
+  * Add package scripts to upstream source, for test-builds.
+
+ -- Thomas E. Dickey <dickey@invisible-island.net>  Thu, 10 Jun 2010 08:59:11 -0400
+
+byacc (20100216-1) unstable; urgency=low
+
+  * New upstream release
+  * debian/source/format: Added using format "3.0 (quilt)"
+
+ -- Dave Beckett <dajobe@debian.org>  Tue, 20 Apr 2010 12:56:11 -0700
+
+byacc (20091027-1) unstable; urgency=low
+
+  * New upstream release
+  * debian/control:
+    - Updated to policy 3.8.4
+    - Add ${misc:Depends}
+
+ -- Dave Beckett <dajobe@debian.org>  Tue, 02 Feb 2010 21:36:34 -0800
+
+byacc (20090221-1) unstable; urgency=low
+
+  * New upstream release
+
+ -- Dave Beckett <dajobe@debian.org>  Thu, 26 Feb 2009 21:06:20 -0800
+
+byacc (20080826-1) unstable; urgency=high
+
+  * New upstream release
+  * debian/patches/02-skeleton.patch: Removed - merged upstream
+  * debian/control: Updated to policy 3.8.0
+  * debian/preinst, debian/postrm: removed - empty (lintian)
+  * debian/watch: version 3 and make FTP passive
+  * Acknowledge NMU - thanks.
+
+ -- Dave Beckett <dajobe@debian.org>  Wed, 11 Sep 2008 23:58:00 -0700
+
+byacc (20070509-1.1) unstable; urgency=high
+
+  * Non-maintainer upload.
+  * Fix stack overflow in skeleton.c with upstream patch.
+    Closes: #491182 aka CVE-2008-3196
+
+ -- Thomas Viehmann <tv@beamnet.de>  Sun, 24 Aug 2008 23:13:07 +0200
+
+byacc (20070509-1) unstable; urgency=low
+
+  * New upstream release
+  * debian/watch: Fix to use passive FTP
+  * debian/compat: added instead of use of DH_COMPAT in debian/rules
+
+ -- Dave Beckett <dajobe@debian.org>  Tue, 26 Jun 2007 22:39:45 -0700
+
+byacc (20050813-1) unstable; urgency=low
+
+  * New upstream release:
+    - Do not close union_file for -d option (Closes: #322858)
+
+ -- Dave Beckett <dajobe@debian.org>  Sun, 14 Aug 2005 10:14:12 +0100
+
+byacc (20050505-1) unstable; urgency=low
+
+  * New maintainer (Closes: #321377)
+  * Switch to new upstream and new source (Closes: #240662)
+  * debian/copyright: Update to new upstream and add source information
+    (Closes: #166300)
+  * Acknowledge fix in NMUs (Closes: #283174)
+  * New manual page does not have the formatting problem (Closes: #100947)
+  * Added debian/watch file.
+
+ -- Dave Beckett <dajobe@debian.org>  Fri,  5 Aug 2005 22:50:20 +0100
+
+byacc (1.9.1-1.1) unstable; urgency=low
+
+  * Remove alternative in prerm.  Closes: #283174
+
+ -- LaMont Jones <lamont@debian.org>  Fri, 26 Nov 2004 18:49:09 -0700
+
+byacc (1.9.1-1) unstable; urgency=low
+
+  * Maintainer upload.
+  * Fixed alternatives entry, closes: Bug#146195;
+  * Changed priority to "extra" at behest of Daniel Bungert,
+    closes: Bug#142271.
+  * Fixed awful packaging error which meant the test/ directory was excluded
+    from the orig.tar.gz.
+
+ -- Jason Henry Parker <henry@debian.org>  Fri, 27 Sep 2002 16:25:27 -0400
+
+byacc (1.9-13.1) unstable; urgency=low
+
+  * Non-maintainer upload
+  * Removed erraneous escapes in manpage - some data wasn't visable,
+    closes: Bug#100947
+  * Alternatives entry added, closes: Bug#113168
+  * Standards-version: 3.5.6
+  * Maintainer script cleaning
+
+ -- Daniel Bungert <drb@debian.org>  Fri, 29 Mar 2002 16:58:30 -0500
+
+byacc (1.9-13) unstable; urgency=low
+
+  * Applied patch from "Randolph Chung" <tausq@debian.org> to fix build problems
+    on ia64, closes: Bug#91966
+
+ -- Jason Henry Parker <henry@debian.org>  Thu, 29 Mar 2001 21:41:19 +1000
+
+byacc (1.9-12) unstable; urgency=low
+
+  * Updated to latest version of debhelper, and Standards-Version: 3.2.1.0, closes: Bug#81444
+  * Added Build-Depends: debhelper, closes: Bug#70207
+  * Removed mktemp() calls in main.c
+  
+ -- Jason Henry Parker <henry@debian.org>  Mon, 18 Dec 2000 08:02:54 +1000
+
+byacc (1.9-11.7) unstable; urgency=low
+
+  * New maintainer.
+  * Updated to dh_make and standards version 2.4.0.0, no lintian errors
+    or warnings.
+  * Added several more files from the upstream distribution to
+    /usr/doc/byacc.
+
+ -- Jason Henry Parker <henry@debian.org>  Sat,  2 Jan 1999 03:04:17 +1000
+
+byacc (1.9-11.6) unstable; urgency=low
+
+  * Patch by <mdorman@law.miami.edu> to remove some
+    superfluous files that can interfere with the build process on other
+    architectures. (Bug #21607).
+
+ -- Vincent Renardias <vincent@waw.com>  Fri, 24 Apr 1998 19:56:58 +0200
+
+byacc (1.9-11.5) unstable; urgency=low
+
+  * Added 'binary-arch' target in debian/rules (Bug #12742).
+
+ -- Vincent Renardias <vincent@waw.com>  Sun, 9 Nov 1997 23:37:31 +0100
+
+byacc (1.9-11.4) unstable; urgency=low
+
+  * Cosmetic change (Fix bug #9623).
+
+ -- Vincent Renardias <vincent@waw.com>  Fri, 9 May 1997 16:30:24 +0200
+
+byacc (1.9-11.3) unstable; urgency=low
+
+  * Rebuilt with libc6.
+
+ -- Debian QA Group <debian-qa@lists.debian.org>  Thu, 1 May 1997 22:02:04 +0200
+
+byacc (1.9-11.2) unstable; urgency=low
+
+  * Orphaned the package at his maintainer's request (dgregor@coil.com).
+
+ -- Debian QA Group <debian-qa@lists.debian.org>  Sun, 20 Apr 1997 20:03:03 +0200
+
+byacc (1.9-11.1) unstable; urgency=low
+
+  * Converted to new source format (Fixes #8085).
+  * Compressed manpage.
+  * Fixed to allow compilation on non-i386 (Fixes #3361).
+  * Added extended description (Fixes #3567).
+  * Added diversion to avoid conflict with bison (Fixes #8086). 
+
+ -- Vincent Renardias <vincent@waw.com>  Sun, 20 Apr 1997 15:59:28 +0200
diff --git a/contrib/byacc/package/debian/compat b/contrib/byacc/package/debian/compat
new file mode 100644
index 0000000..7ed6ff8
--- /dev/null
+++ b/contrib/byacc/package/debian/compat
@@ -0,0 +1 @@
+5
diff --git a/contrib/byacc/package/debian/control b/contrib/byacc/package/debian/control
new file mode 100644
index 0000000..720aada
--- /dev/null
+++ b/contrib/byacc/package/debian/control
@@ -0,0 +1,17 @@
+Source: byacc
+Maintainer: Dave Beckett <dajobe@debian.org>
+Section: devel
+Priority: extra
+Standards-Version: 3.8.4
+Build-Depends: debhelper (>= 5)
+Homepage: http://invisible-island.net/byacc/
+
+Package: byacc
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: public domain Berkeley LALR Yacc parser generator
+ This package provides a parser generator utility that reads a grammar
+ specification from a file 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.  It has a public domain
+ license which includes the generated C.
diff --git a/contrib/byacc/package/debian/copyright b/contrib/byacc/package/debian/copyright
new file mode 100644
index 0000000..ea6c6a5
--- /dev/null
+++ b/contrib/byacc/package/debian/copyright
@@ -0,0 +1,120 @@
+Upstream source http://dickey.his.com/byacc/byacc.html
+
+Berkeley Yacc is in the public domain; changes made to it by the current
+maintainer are likewise unrestricted.  That applies to most of the files.
+A few files (currently those related to autoconf scripting) have other
+licenses as noted here.
+
+Current byacc upstream maintainer: Thomas Dickey <dickey@invisible-island.net>
+
+Public domain notice and no warranty:
+-------------------------------------------------------------------------------
+    Berkeley Yacc is an LALR(1) parser generator.  Berkeley Yacc has been made
+as compatible as possible with AT&T Yacc.  Berkeley Yacc can accept any input
+specification that conforms to the AT&T Yacc documentation.  Specifications
+that take advantage of undocumented features of AT&T Yacc will probably be
+rejected.
+
+    Berkeley Yacc is distributed with no warranty whatever.  The code
+is certain to contain errors.  Neither the author nor any contributor
+takes responsibility for any consequences of its use.
+
+    Berkeley Yacc is in the public domain.  The data structures and algorithms
+used in Berkeley Yacc are all either taken from documents available to the
+general public or are inventions of the author.  Anyone may freely distribute
+source or binary forms of Berkeley Yacc whether unchanged or modified.
+Distributers may charge whatever fees they can obtain for Berkeley Yacc.
+Programs generated by Berkeley Yacc may be distributed freely.
+
+    Please report bugs to
+
+			robert.corbett@eng.Sun.COM
+
+Include a small example if possible.  Please include the banner string from
+skeleton.c with the bug report.  Do not expect rapid responses.
+-------------------------------------------------------------------------------
+
+Files: aclocal.m4
+Licence: other-BSD
+Copyright:  2004-2011,2012 by Thomas E. Dickey
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the
+    "Software"), to deal in the Software without restriction, including
+    without limitation the rights to use, copy, modify, merge, publish,
+    distribute, distribute with modifications, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+    
+    The above copyright notice and this permission notice shall be included
+    in all copies or portions of the Software.
+    
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+    IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+    DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+    OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
+    THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+    
+    Except as contained in this notice, the name(s) of the above copyright
+    holders shall not be used in advertising or otherwise to promote the
+    sale, use or other dealings in this Software without prior written
+    authorization.
+
+Files: install-sh
+Copyright:  1994 X Consortium
+Licence: other-BSD
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to
+    deal in the Software without restriction, including without limitation the
+    rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+    sell copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+    X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+    AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+    TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+    Except as contained in this notice, the name of the X Consortium shall not
+    be used in advertising or otherwise to promote the sale, use or other deal-
+    ings in this Software without prior written authorization from the X Consor-
+    tium.
+
+    FSF changes to this file are in the public domain.
+
+    Calling this script install-sh is preferred over install.sh, to prevent
+    `make' implicit rules from creating a file called install from it
+    when there is no Makefile.
+
+    This script is compatible with the BSD install script, but was written
+    from scratch.  It can only install one file at a time, a restriction
+    shared with many OS's install programs.
+
+Files: debian/*
+Copyright:  2012 Thomas E. Dickey
+Licence: other-BSD
+    Permission to use, copy, modify, and distribute this software and its
+    documentation for any purpose and without fee is hereby granted,
+    provided that the above copyright notice appear in all copies and that
+    both that copyright notice and this permission notice appear in
+    supporting documentation, and that the name of the above listed
+    copyright holder(s) not be used in advertising or publicity pertaining
+    to distribution of the software without specific, written prior
+    permission.
+
+    THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD
+    TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+    AND FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE
+    LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+On Debian systems, the complete text of the GNU General
+Public License can be found in '/usr/share/common-licenses/GPL-2'
diff --git a/contrib/byacc/package/debian/docs b/contrib/byacc/package/debian/docs
new file mode 100644
index 0000000..cbda209
--- /dev/null
+++ b/contrib/byacc/package/debian/docs
@@ -0,0 +1,4 @@
+README
+ACKNOWLEDGEMENTS
+NEW_FEATURES
+NOTES
diff --git a/contrib/byacc/package/debian/postinst b/contrib/byacc/package/debian/postinst
new file mode 100644
index 0000000..ca6276d
--- /dev/null
+++ b/contrib/byacc/package/debian/postinst
@@ -0,0 +1,15 @@
+#! /bin/sh
+# postinst script for byacc
+
+set -e
+
+if [ $1 != "upgrade" ] ; then
+	update-alternatives \
+		--install /usr/bin/yacc yacc /usr/bin/byacc 80 \
+		--slave /usr/share/man/man1/yacc.1.gz yaccman \
+			/usr/share/man/man1/byacc.1.gz
+fi
+
+#DEBHELPER#
+
+exit 0
diff --git a/contrib/byacc/package/debian/prerm b/contrib/byacc/package/debian/prerm
new file mode 100644
index 0000000..f3889d7
--- /dev/null
+++ b/contrib/byacc/package/debian/prerm
@@ -0,0 +1,12 @@
+#! /bin/sh
+# prerm script for byacc
+
+set -e
+
+if [ $1 != "upgrade" ]; then
+	update-alternatives --remove yacc /usr/bin/byacc
+fi
+
+#DEBHELPER#
+
+exit 0
diff --git a/contrib/byacc/package/debian/rules b/contrib/byacc/package/debian/rules
new file mode 100755
index 0000000..f9424ac
--- /dev/null
+++ b/contrib/byacc/package/debian/rules
@@ -0,0 +1,93 @@
+#!/usr/bin/make -f
+# MAde with the aid of dh_make, by Craig Small
+# Sample debian/rules that uses debhelper. GNU copyright 1997 by Joey Hess.
+# Some lines taken from debmake, by Cristoph Lameter.
+
+# Uncomment this to turn on verbose mode.
+#export DH_VERBOSE=1
+
+# These are used for cross-compiling and for saving the configure script
+# from having to guess our platform (since we know it already)
+DEB_HOST_GNU_TYPE   ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
+DEB_BUILD_GNU_TYPE  ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
+
+CFLAGS =
+
+ifneq (,$(findstring noopt,$(DEB_BUILD_OPTIONS)))
+        CFLAGS += -O0
+else
+        CFLAGS += -O2
+endif
+ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS)))
+        INSTALL_PROGRAM += -s
+endif
+
+
+configure: configure-stamp
+configure-stamp:
+	dh_testdir
+
+	CFLAGS="$(CFLAGS)" ./configure \
+		--host=$(DEB_HOST_GNU_TYPE) \
+		--build=$(DEB_BUILD_GNU_TYPE) \
+		--prefix=/usr \
+		--mandir=\$${prefix}/share/man \
+		--sysconfdir=/etc \
+		--program-transform-name='s,^,b,'
+
+	touch configure-stamp
+
+build: build-stamp
+build-stamp: configure-stamp
+	dh_testdir
+
+	$(MAKE)
+
+	touch build-stamp
+
+clean:
+	dh_testdir
+	dh_testroot
+
+	[ ! -f Makefile ] || $(MAKE) clean
+
+	rm -f configure-stamp build-stamp install-stamp \
+		config.cache config.h config.status config.log makefile
+
+	rm -f *.o yacc
+
+	dh_clean
+
+install: install-stamp
+install-stamp: build-stamp
+	dh_testdir
+	dh_testroot
+	dh_clean -k
+	dh_installdirs
+
+	$(MAKE) install DESTDIR=$(CURDIR)/debian/byacc
+
+	touch install-stamp
+
+# Build architecture-independent files here.
+binary-indep: build install
+# No binary-indep target.
+
+# Build architecture-dependent files here.
+binary-arch: build install
+	dh_testdir
+	dh_testroot
+	dh_installdocs
+	dh_installexamples
+	dh_installchangelogs CHANGES
+	dh_strip
+	dh_compress
+	dh_fixperms
+	dh_installdeb
+	dh_shlibdeps
+	dh_gencontrol
+	dh_md5sums
+	dh_builddeb
+
+binary: binary-indep binary-arch
+.PHONY: build clean binary-indep binary-arch binary install install-stamp
diff --git a/contrib/byacc/package/debian/source/format b/contrib/byacc/package/debian/source/format
new file mode 100644
index 0000000..163aaf8
--- /dev/null
+++ b/contrib/byacc/package/debian/source/format
@@ -0,0 +1 @@
+3.0 (quilt)
diff --git a/contrib/byacc/package/debian/watch b/contrib/byacc/package/debian/watch
new file mode 100644
index 0000000..de083b0
--- /dev/null
+++ b/contrib/byacc/package/debian/watch
@@ -0,0 +1,4 @@
+version=3
+
+opts=passive ftp://invisible-island.net/byacc/byacc-(\d+)\.tgz \
+ debian  uupdate
diff --git a/contrib/byacc/package/pkgsrc/DESCR b/contrib/byacc/package/pkgsrc/DESCR
new file mode 100644
index 0000000..fe01865
--- /dev/null
+++ b/contrib/byacc/package/pkgsrc/DESCR
@@ -0,0 +1,6 @@
+Berkeley Yacc (byacc) is a LALR(1) parser generator.  Berkeley Yacc
+has been made as compatible as possible with AT&T Yacc.  Berkeley
+Yacc can accept any input specification that conforms to the AT&T
+Yacc documentation.
+
+Some programs depend on a byacc (instead of bison).
diff --git a/contrib/byacc/package/pkgsrc/Makefile b/contrib/byacc/package/pkgsrc/Makefile
new file mode 100644
index 0000000..416ea85
--- /dev/null
+++ b/contrib/byacc/package/pkgsrc/Makefile
@@ -0,0 +1,19 @@
+# $NetBSD: Makefile,v 1.9 2008/07/24 17:13:00 tonnerre Exp $
+#
+
+DISTNAME=	byacc-20050813
+PKGREVISION=	1
+CATEGORIES=	devel
+MASTER_SITES=	ftp://invisible-island.net/byacc/
+EXTRACT_SUFX=	.tgz
+
+MAINTAINER=	pkgsrc-users@NetBSD.org
+HOMEPAGE=	http://dickey.his.com/byacc/byacc.html
+COMMENT=	Berkeley Yacc
+
+PKG_DESTDIR_SUPPORT=	user-destdir
+
+GNU_CONFIGURE=	YES
+MAKE_FILE=	makefile
+
+.include "../../mk/bsd.pkg.mk"
diff --git a/contrib/byacc/package/pkgsrc/PLIST b/contrib/byacc/package/pkgsrc/PLIST
new file mode 100644
index 0000000..5bcfece
--- /dev/null
+++ b/contrib/byacc/package/pkgsrc/PLIST
@@ -0,0 +1,3 @@
+@comment $NetBSD: PLIST,v 1.2 2005/04/13 14:11:54 wiz Exp $
+bin/yacc
+man/man1/yacc.1
diff --git a/contrib/byacc/package/pkgsrc/distinfo b/contrib/byacc/package/pkgsrc/distinfo
new file mode 100644
index 0000000..99252a6
--- /dev/null
+++ b/contrib/byacc/package/pkgsrc/distinfo
@@ -0,0 +1,6 @@
+$NetBSD: distinfo,v 1.4 2008/07/24 17:13:00 tonnerre Exp $
+
+SHA1 (byacc-20050813.tgz) = 3258494f3422eb3150944c1823af1c9c2c386062
+RMD160 (byacc-20050813.tgz) = 3ee159857a79025a83e2b0807577925fe460f816
+Size (byacc-20050813.tgz) = 138684 bytes
+SHA1 (patch-aa) = decae78775a5e0f1e1f7aaaa258da53903aa1f7a