3 Changes made by the LLVM Team (llvmdev@cs.uiuc.edu, 2/6/2004):
4 1) Makefile was modified for building with the LLVM build system and tools.
5 2) Version numbers were updated as described in the FAQ.
6 3) LLVM LICENSE.TXT file was added describing licensing information.
8 ZLIB DATA COMPRESSION LIBRARY
10 zlib 1.2.1 is a general purpose data compression library. All the code is
11 thread safe. The data format used by the zlib library is described by RFCs
12 (Request for Comments) 1950 to 1952 in the files
13 http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
14 and rfc1952.txt (gzip format). These documents are also available in other
15 formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
17 All functions of the compression library are documented in the file zlib.h
18 (volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
19 of the library is given in the file example.c which also tests that the library
20 is working correctly. Another example is given in the file minigzip.c. The
21 compression library itself is composed of all source files except example.c and
24 To compile all files and run the test program, follow the instructions given at
25 the top of Makefile. In short "make test; make install" should work for most
26 machines. For Unix: "./configure; make test; make install" For MSDOS, use one
27 of the special makefiles such as Makefile.msc. For VMS, use Make_vms.com or
30 Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
31 <info@winimage.com> for the Windows DLL version. The zlib home page is
32 http://www.zlib.org or http://www.gzip.org/zlib/ Before reporting a problem,
33 please check this site to verify that you have the latest version of zlib;
34 otherwise get the latest version and check whether the problem still exists or
37 PLEASE read the zlib FAQ http://www.gzip.org/zlib/zlib_faq.html before asking
40 Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
41 issue of Dr. Dobb's Journal; a copy of the article is available in
42 http://dogma.net/markn/articles/zlibtool/zlibtool.htm
44 The changes made in version 1.2.1 are documented in the file ChangeLog.
46 Unsupported third party contributions are provided in directory "contrib".
48 A Java implementation of zlib is available in the Java Development Kit
49 http://java.sun.com/j2se/1.4.2/docs/api/java/util/zip/package-summary.html
50 See the zlib home page http://www.zlib.org for details.
52 A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is in the
53 CPAN (Comprehensive Perl Archive Network) sites
54 http://www.cpan.org/modules/by-module/Compress/
56 A Python interface to zlib written by A.M. Kuchling <amk@magnet.com> is
57 available in Python 1.5 and later versions, see
58 http://www.python.org/doc/lib/module-zlib.html
60 A zlib binding for TCL written by Andreas Kupries <a.kupries@westend.com> is
61 availlable at http://www.oche.de/~akupries/soft/trf/trf_zip.html
63 An experimental package to read and write files in .zip format, written on top
64 of zlib by Gilles Vollant <info@winimage.com>, is available in the
65 contrib/minizip directory of zlib.
68 Notes for some targets:
70 - For Windows DLL versions, please see win32/DLL_FAQ.txt
72 - For 64-bit Irix, deflate.c must be compiled without any optimization. With
73 -O, one libpng test fails. The test works in 32 bit mode (with the -n32
74 compiler flag). The compiler bug has been reported to SGI.
76 - zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
77 when compiled with cc.
79 - On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is
80 necessary to get gzprintf working correctly. This is done by configure.
82 - zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
83 other compilers. Use "make test" to check your compiler.
85 - gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.
87 - For PalmOs, see http://palmzlib.sourceforge.net/
89 - When building a shared, i.e. dynamic library on Mac OS X, the library must be
90 installed before testing (do "make install" before "make test"), since the
91 library location is specified in the library.
96 The deflate format used by zlib was defined by Phil Katz. The deflate
97 and zlib specifications were written by L. Peter Deutsch. Thanks to all the
98 people who reported problems and suggested various improvements in zlib;
99 they are too numerous to cite here.
103 (C) 1995-2003 Jean-loup Gailly and Mark Adler
105 This software is provided 'as-is', without any express or implied
106 warranty. In no event will the authors be held liable for any damages
107 arising from the use of this software.
109 Permission is granted to anyone to use this software for any purpose,
110 including commercial applications, and to alter it and redistribute it
111 freely, subject to the following restrictions:
113 1. The origin of this software must not be misrepresented; you must not
114 claim that you wrote the original software. If you use this software
115 in a product, an acknowledgment in the product documentation would be
116 appreciated but is not required.
117 2. Altered source versions must be plainly marked as such, and must not be
118 misrepresented as being the original software.
119 3. This notice may not be removed or altered from any source distribution.
121 Jean-loup Gailly Mark Adler
122 jloup@gzip.org madler@alumni.caltech.edu
124 If you use the zlib library in a product, we would appreciate *not*
125 receiving lengthy legal documents to sign. The sources are provided
126 for free but without warranty of any kind. The library has been
127 entirely written by Jean-loup Gailly and Mark Adler; it does not
128 include third-party code.
130 If you redistribute modified sources, we would appreciate that you include
131 in the file ChangeLog history information documenting your changes. Please
132 read the FAQ for more information on the distribution of modified source