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 ZLIB DATA COMPRESSION LIBRARY

 zlib 1.2.8 is a general purpose data compression library.  All the code is

 thread safe.  The data format used by the zlib library is described by RFCs

 (Request for Comments) 1950 to 1952 in the files

 http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and

 rfc1952 (gzip format).

 All functions of the compression library are documented in the file zlib.h

 (volunteer to write man pages welcome, contact zlib@gzip.org).  A usage example

 of the library is given in the file test/example.c which also tests that

 the library is working correctly.  Another example is given in the file

 test/minigzip.c.  The compression library itself is composed of all source

 files in the root directory.

 To compile all files and run the test program, follow the instructions given at

 the top of Makefile.in.  In short "./configure; make test", and if that goes

 well, "make install" should work for most flavors of Unix.  For Windows, use

 one of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use

 make_vms.com.

 Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant

 <info@winimage.com> for the Windows DLL version.  The zlib home page is

 http://zlib.net/ .  Before reporting a problem, please check this site to

 verify that you have the latest version of zlib; otherwise get the latest

 version and check whether the problem still exists or not.

 PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help.

 Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997

 issue of Dr.  Dobb's Journal; a copy of the article is available at

 http://marknelson.us/1997/01/01/zlib-engine/ .

 The changes made in version 1.2.8 are documented in the file ChangeLog.

 Unsupported third party contributions are provided in directory contrib/ .

 zlib is available in Java using the java.util.zip package, documented at

 http://java.sun.com/developer/technicalArticles/Programming/compression/ .

 A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available

 at CPAN (Comprehensive Perl Archive Network) sites, including

 http://search.cpan.org/~pmqs/IO-Compress-Zlib/ .

 A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is

 available in Python 1.5 and later versions, see

 http://docs.python.org/library/zlib.html .

 zlib is built into tcl: http://wiki.tcl.tk/4610 .

 An experimental package to read and write files in .zip format, written on top

 of zlib by Gilles Vollant <info@winimage.com>, is available in the

 contrib/minizip directory of zlib.

 Notes for some targets:

 - For Windows DLL versions, please see win32/DLL_FAQ.txt

 - For 64-bit Irix, deflate.c must be compiled without any optimization. With

   -O, one libpng test fails. The test works in 32 bit mode (with the -n32

   compiler flag). The compiler bug has been reported to SGI.

 - zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works

   when compiled with cc.

 - On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is

   necessary to get gzprintf working correctly. This is done by configure.

 - zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with

   other compilers. Use "make test" to check your compiler.

 - gzdopen is not supported on RISCOS or BEOS.

 - For PalmOs, see http://palmzlib.sourceforge.net/

 Acknowledgments:

   The deflate format used by zlib was defined by Phil Katz.  The deflate and

   zlib specifications were written by L.  Peter Deutsch.  Thanks to all the

   people who reported problems and suggested various improvements in zlib; they

   are too numerous to cite here.

 Copyright notice:

  (C) 1995-2013 Jean-loup Gailly and Mark Adler

   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.

   Jean-loup Gailly        Mark Adler

   jloup@gzip.org          madler@alumni.caltech.edu

 If you use the zlib library in a product, we would appreciate *not* receiving

 lengthy legal documents to sign.  The sources are provided for free but without

 warranty of any kind.  The library has been entirely written by Jean-loup

 Gailly and Mark Adler; it does not include third-party code.

 If you redistribute modified sources, we would appreciate that you include in

 the file ChangeLog history information documenting your changes.  Please read

 the FAQ for more information on the distribution of modified source versions.