LEGAL NOTICE INFORMATION
------------------------

All the files in this distribution are covered under either the Ruby's
license (see the file COPYING) or public-domain except some files
mentioned below.

regex.[ch]:

  These files are under LGPL.  Treat them as LGPL says. (See the file
  LGPL for details)

    Extended regular expression matching and search library.
    Copyright (C) 1993, 94, 95, 96, 97, 98 Free Software Foundation, Inc.

    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.

    The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with the GNU C Library; see the file LGPL.  If not,
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */

    Multi-byte extension added May, 1993 by t^2 (Takahiro Tanimoto)
    Last change: May 21, 1993 by t^2
    removed gapped buffer support, multiple syntax support by matz <matz@nts.co.jp>
    Perl5 extension added by matz <matz@caelum.co.jp>
    UTF-8 extension added Jan 16 1999 by Yoshida Masato  <yoshidam@tau.bekkoame.ne.jp>

configure:

  This file is free software.

    Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.

    This configure script is free software; the Free Software Foundation
    gives unlimited permission to copy, distribute and modify it.

config.guess:
config.sub:

  As long as you distribute these files with the file configure, they
  are covered under the Ruby's license.

      Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
      Free Software Foundation, Inc.

    This file is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

    As a special exception to the GNU General Public License, if you
    distribute this file as part of a program that contains a
    configuration script generated by Autoconf, you may include it under
    the same distribution terms that you use for the rest of that program.

parse.c:

  This file is licensed under the GPL, but is incorporated into Ruby and 
  redistributed under the terms of the Ruby license, as permitted by the
  exception to the GPL below.

     Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006
     Free Software Foundation, Inc.

     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2, or (at your option)
     any later version.

     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.

     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.  */

  /* As a special exception, you may create a larger work that contains
     part or all of the Bison parser skeleton and distribute that work
     under terms of your choice, so long as that work isn't itself a
     parser generator using the skeleton or a modified version thereof
     as a parser skeleton.  Alternatively, if you modify or redistribute
     the parser skeleton itself, you may (at your option) remove this
     special exception, which will cause the skeleton and the resulting
     Bison output files to be licensed under the GNU General Public
     License without this special exception.

     This special exception was added by the Free Software Foundation in
     version 2.2 of Bison.  */

util.c (partly):
win32/win32.[ch]:

  You can apply the Artistic License to these files. (or GPL,
  alternatively)

    Copyright (c) 1993, Intergraph Corporation

    You may distribute under the terms of either the GNU General Public
    License or the Artistic License, as specified in the perl README file.

random.c

  This file is under the new-style BSD license.

    A C-program for MT19937, with initialization improved 2002/2/10.
    Coded by Takuji Nishimura and Makoto Matsumoto.
    This is a faster version by taking Shawn Cokus's optimization,
    Matthe Bellew's simplification, Isaku Wada's real version.

    Before using, initialize the state by using init_genrand(seed) 
    or init_by_array(init_key, key_length).

    Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
    All rights reserved.                          

    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. The names of its contributors may not be used to endorse or promote 
	 products derived from this software without specific prior written 
	 permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.


    Any feedback is very welcome.
    http://www.math.keio.ac.jp/matumoto/emt.html
    email: matumoto@math.keio.ac.jp

st.[ch]:
x68/*:
missing/alloca.c:
missing/dup2.c:
missing/finite.c:
missing/hypot.c:
missing/isinf.c:
missing/isnan.c:
missing/memcmp.c:
missing/memmove.c:
missing/strcasecmp.c:
missing/strchr.c:
missing/streror.c:
missing/strftime.c:
missing/strncasecmp.c:
missing/strstr.c:
missing/strtol.c:
ext/digest/sha1/sha1.[ch]:

  These files are all under public domain.

missing/strtod.c:

  This file will not be used on most platforms depending on how the
  configure script results.  In any case you must not receive any fee
  with the file itself.

    Copyright (c) 1988-1993 The Regents of the University of California.
    Copyright (c) 1994 Sun Microsystems, Inc.

    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.  The University of California
    makes no representations about the suitability of this
    software for any purpose.  It is provided "as is" without
    express or implied warranty.

missing/strtoul.c:

  This file will not be used on most platforms depending on how the
  configure script results.  In any case you must not receive any fee
  with the file itself.

    Copyright 1988 Regents of the University of California

    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.  The University of California
    makes no representations about the suitability of this
    software for any purpose.  It is provided "as is" without
    express or implied warranty.

missing/erf.c:
missing/crypt.c:
missing/vsnprintf.c:

  This file is under the old-style BSD license.  Note that the
  paragraph 3 below is now null and void.

    Copyright (c) 1990, 1993
         The Regents of the University of California.  All rights reserved.

    This code is derived from software contributed to Berkeley by
    Chris Torek.

    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. 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.

    IMPORTANT NOTE:
    --------------
    From ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
    paragraph 3 above is now null and void.

ext/digest/md5/md5.[ch]:

  These files are under the following license.  Ruby uses modified
  versions of them.

    Copyright (C) 1999, 2000 Aladdin Enterprises.  All rights reserved.

    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.

    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:

    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.

    L. Peter Deutsch
    ghost@aladdin.com

ext/digest/rmd160/rmd160.[ch]:

  These files have the following copyright information, and by the
  author we are allowed to use it under the new-style BSD license.

    AUTHOR:   Antoon Bosselaers, ESAT-COSIC
              (Arranged for libc by Todd C. Miller)
    DATE:     1 March 1996

    Copyright (c) Katholieke Universiteit Leuven
    1996, All Rights Reserved

ext/digest/rmd160/rmd160hl.c:
ext/digest/sha1/sha1hl.c:

  These files are under the beer-ware license.

    "THE BEER-WARE LICENSE" (Revision 42):
    <phk@login.dkuug.dk> wrote this file.  As long as you retain this notice you
    can do whatever you want with this stuff. If we meet some day, and you think
    this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp

ext/digest/sha2/sha2.[ch]:
ext/digest/sha2/sha2hl.c:

  These files are under the new-style BSD license.

    Copyright 2000 Aaron D. Gifford.  All rights reserved.

    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. Neither the name of the copyright holder nor the names of contributors
       may be used to endorse or promote products derived from this software
       without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTOR(S) ``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 AUTHOR(S) OR CONTRIBUTOR(S) 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.

ext/nkf/nkf-utf8/config.h:
ext/nkf/nkf-utf8/nkf.c:
ext/nkf/nkf-utf8/utf8tbl.c:

  These files are under the following license.  So to speak, it is
  copyrighted semi-public-domain software.

    Copyright (C) 1987, Fujitsu LTD. (Itaru ICHIKAWA)
       Everyone is permitted to do anything on this program 
       including copying, modifying, improving,
       as long as you don't try to pretend that you wrote it.
       i.e., the above copyright notice has to appear in all copies.
       Binary distribution requires original version messages.
       You don't have to ask before copying, redistribution or publishing.
       THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE.

ext/socket/addrinfo.h:
ext/socket/getaddrinfo.c:
ext/socket/getnameinfo.c:

  These files are under the new-style BSD license.

    Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
    All rights reserved.

    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. Neither the name of the project 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 PROJECT 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 PROJECT 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.

ext/win32ole/win32ole.c:

  You can apply the Artistic License to this file. (or GPL,
  alternatively)

    (c) 1995 Microsoft Corporation. All rights reserved.
    Developed by ActiveWare Internet Corp., http://www.ActiveWare.com

    Other modifications Copyright (c) 1997, 1998 by Gurusamy Sarathy
    <gsar@umich.edu> and Jan Dubois <jan.dubois@ibm.net>
 
    You may distribute under the terms of either the GNU General Public
    License or the Artistic License, as specified in the README file
    of the Perl distribution.