README - platform/external/zlib - Git at Google

 ZLIB DATA COMPRESSION LIBRARY

 zlib 1.2.5 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://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
 and rfc1952.txt (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 example.c which also tests that the library
 is working correctly.  Another example is given in the file minigzip.c.  The
 compression library itself is composed of all source files except example.c and
 minigzip.c.

 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 1.2.5 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://www.python.org/doc/lib/module-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) 1995-2010 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.
	ZLIB DATA COMPRESSION LIBRARY

	zlib 1.2.5 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://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
	and rfc1952.txt (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 example.c which also tests that the library
	is working correctly. Another example is given in the file minigzip.c. The
	compression library itself is composed of all source files except example.c and
	minigzip.c.

	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 1.2.5 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://www.python.org/doc/lib/module-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) 1995-2010 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.