| 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 [email protected]). 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 <[email protected]>, 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]>, 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 | |
| [email protected] [email protected] | |
| 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. | |