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v 3.1.0

    1: ZLIB DATA COMPRESSION LIBRARY
    2: 
    3: zlib 1.2.8 is a general purpose data compression library.  All the code is
    4: thread safe.  The data format used by the zlib library is described by RFCs
    5: (Request for Comments) 1950 to 1952 in the files
    6: http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
    7: rfc1952 (gzip format).
    8: 
    9: All functions of the compression library are documented in the file zlib.h
   10: (volunteer to write man pages welcome, contact zlib@gzip.org).  A usage example
   11: of the library is given in the file test/example.c which also tests that
   12: the library is working correctly.  Another example is given in the file
   13: test/minigzip.c.  The compression library itself is composed of all source
   14: files in the root directory.
   15: 
   16: To compile all files and run the test program, follow the instructions given at
   17: the top of Makefile.in.  In short "./configure; make test", and if that goes
   18: well, "make install" should work for most flavors of Unix.  For Windows, use
   19: one of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
   20: make_vms.com.
   21: 
   22: Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
   23: <info@winimage.com> for the Windows DLL version.  The zlib home page is
   24: http://zlib.net/ .  Before reporting a problem, please check this site to
   25: verify that you have the latest version of zlib; otherwise get the latest
   26: version and check whether the problem still exists or not.
   27: 
   28: PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help.
   29: 
   30: Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997
   31: issue of Dr.  Dobb's Journal; a copy of the article is available at
   32: http://marknelson.us/1997/01/01/zlib-engine/ .
   33: 
   34: The changes made in version 1.2.8 are documented in the file ChangeLog.
   35: 
   36: Unsupported third party contributions are provided in directory contrib/ .
   37: 
   38: zlib is available in Java using the java.util.zip package, documented at
   39: http://java.sun.com/developer/technicalArticles/Programming/compression/ .
   40: 
   41: A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available
   42: at CPAN (Comprehensive Perl Archive Network) sites, including
   43: http://search.cpan.org/~pmqs/IO-Compress-Zlib/ .
   44: 
   45: A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
   46: available in Python 1.5 and later versions, see
   47: http://docs.python.org/library/zlib.html .
   48: 
   49: zlib is built into tcl: http://wiki.tcl.tk/4610 .
   50: 
   51: An experimental package to read and write files in .zip format, written on top
   52: of zlib by Gilles Vollant <info@winimage.com>, is available in the
   53: contrib/minizip directory of zlib.
   54: 
   55: 
   56: Notes for some targets:
   57: 
   58: - For Windows DLL versions, please see win32/DLL_FAQ.txt
   59: 
   60: - For 64-bit Irix, deflate.c must be compiled without any optimization. With
   61:   -O, one libpng test fails. The test works in 32 bit mode (with the -n32
   62:   compiler flag). The compiler bug has been reported to SGI.
   63: 
   64: - zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
   65:   when compiled with cc.
   66: 
   67: - On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is
   68:   necessary to get gzprintf working correctly. This is done by configure.
   69: 
   70: - zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
   71:   other compilers. Use "make test" to check your compiler.
   72: 
   73: - gzdopen is not supported on RISCOS or BEOS.
   74: 
   75: - For PalmOs, see http://palmzlib.sourceforge.net/
   76: 
   77: 
   78: Acknowledgments:
   79: 
   80:   The deflate format used by zlib was defined by Phil Katz.  The deflate and
   81:   zlib specifications were written by L.  Peter Deutsch.  Thanks to all the
   82:   people who reported problems and suggested various improvements in zlib; they
   83:   are too numerous to cite here.
   84: 
   85: Copyright notice:
   86: 
   87:  (C) 1995-2013 Jean-loup Gailly and Mark Adler
   88: 
   89:   This software is provided 'as-is', without any express or implied
   90:   warranty.  In no event will the authors be held liable for any damages
   91:   arising from the use of this software.
   92: 
   93:   Permission is granted to anyone to use this software for any purpose,
   94:   including commercial applications, and to alter it and redistribute it
   95:   freely, subject to the following restrictions:
   96: 
   97:   1. The origin of this software must not be misrepresented; you must not
   98:      claim that you wrote the original software. If you use this software
   99:      in a product, an acknowledgment in the product documentation would be
  100:      appreciated but is not required.
  101:   2. Altered source versions must be plainly marked as such, and must not be
  102:      misrepresented as being the original software.
  103:   3. This notice may not be removed or altered from any source distribution.
  104: 
  105:   Jean-loup Gailly        Mark Adler
  106:   jloup@gzip.org          madler@alumni.caltech.edu
  107: 
  108: If you use the zlib library in a product, we would appreciate *not* receiving
  109: lengthy legal documents to sign.  The sources are provided for free but without
  110: warranty of any kind.  The library has been entirely written by Jean-loup
  111: Gailly and Mark Adler; it does not include third-party code.
  112: 
  113: If you redistribute modified sources, we would appreciate that you include in
  114: the file ChangeLog history information documenting your changes.  Please read
  115: the FAQ for more information on the distribution of modified source versions.