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0003 zlib 1.2.8 is a general purpose data compression library.  All the code is
0004 thread safe.  The data format used by the zlib library is described by RFCs
0005 (Request for Comments) 1950 to 1952 in the files
0006 http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
0007 rfc1952 (gzip format).
0009 All functions of the compression library are documented in the file zlib.h
0010 (volunteer to write man pages welcome, contact zlib@gzip.org).  A usage example
0011 of the library is given in the file test/example.c which also tests that
0012 the library is working correctly.  Another example is given in the file
0013 test/minigzip.c.  The compression library itself is composed of all source
0014 files in the root directory.
0016 To compile all files and run the test program, follow the instructions given at
0017 the top of Makefile.in.  In short "./configure; make test", and if that goes
0018 well, "make install" should work for most flavors of Unix.  For Windows, use
0019 one of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
0020 make_vms.com.
0022 Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
0023 <info@winimage.com> for the Windows DLL version.  The zlib home page is
0024 http://zlib.net/ .  Before reporting a problem, please check this site to
0025 verify that you have the latest version of zlib; otherwise get the latest
0026 version and check whether the problem still exists or not.
0028 PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help.
0030 Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997
0031 issue of Dr.  Dobb's Journal; a copy of the article is available at
0032 http://marknelson.us/1997/01/01/zlib-engine/ .
0034 The changes made in version 1.2.8 are documented in the file ChangeLog.
0036 Unsupported third party contributions are provided in directory contrib/ .
0038 zlib is available in Java using the java.util.zip package, documented at
0039 http://java.sun.com/developer/technicalArticles/Programming/compression/ .
0041 A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available
0042 at CPAN (Comprehensive Perl Archive Network) sites, including
0043 http://search.cpan.org/~pmqs/IO-Compress-Zlib/ .
0045 A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
0046 available in Python 1.5 and later versions, see
0047 http://docs.python.org/library/zlib.html .
0049 zlib is built into tcl: http://wiki.tcl.tk/4610 .
0051 An experimental package to read and write files in .zip format, written on top
0052 of zlib by Gilles Vollant <info@winimage.com>, is available in the
0053 contrib/minizip directory of zlib.
0056 Notes for some targets:
0058 - For Windows DLL versions, please see win32/DLL_FAQ.txt
0060 - For 64-bit Irix, deflate.c must be compiled without any optimization. With
0061   -O, one libpng test fails. The test works in 32 bit mode (with the -n32
0062   compiler flag). The compiler bug has been reported to SGI.
0064 - zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
0065   when compiled with cc.
0067 - On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is
0068   necessary to get gzprintf working correctly. This is done by configure.
0070 - zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
0071   other compilers. Use "make test" to check your compiler.
0073 - gzdopen is not supported on RISCOS or BEOS.
0075 - For PalmOs, see http://palmzlib.sourceforge.net/
0078 Acknowledgments:
0080   The deflate format used by zlib was defined by Phil Katz.  The deflate and
0081   zlib specifications were written by L.  Peter Deutsch.  Thanks to all the
0082   people who reported problems and suggested various improvements in zlib; they
0083   are too numerous to cite here.
0085 Copyright notice:
0087  (C) 1995-2013 Jean-loup Gailly and Mark Adler
0089   This software is provided 'as-is', without any express or implied
0090   warranty.  In no event will the authors be held liable for any damages
0091   arising from the use of this software.
0093   Permission is granted to anyone to use this software for any purpose,
0094   including commercial applications, and to alter it and redistribute it
0095   freely, subject to the following restrictions:
0097   1. The origin of this software must not be misrepresented; you must not
0098      claim that you wrote the original software. If you use this software
0099      in a product, an acknowledgment in the product documentation would be
0100      appreciated but is not required.
0101   2. Altered source versions must be plainly marked as such, and must not be
0102      misrepresented as being the original software.
0103   3. This notice may not be removed or altered from any source distribution.
0105   Jean-loup Gailly        Mark Adler
0106   jloup@gzip.org          madler@alumni.caltech.edu
0108 If you use the zlib library in a product, we would appreciate *not* receiving
0109 lengthy legal documents to sign.  The sources are provided for free but without
0110 warranty of any kind.  The library has been entirely written by Jean-loup
0111 Gailly and Mark Adler; it does not include third-party code.
0113 If you redistribute modified sources, we would appreciate that you include in
0114 the file ChangeLog history information documenting your changes.  Please read
0115 the FAQ for more information on the distribution of modified source versions.