Added zlib README and updated license notes.
authorRyan C. Gordon <>
Wed, 23 Jan 2008 05:01:50 +0000
changeset 921 46119daaaee6
parent 919 932b44ae8335
child 923 dd40553428d0
Added zlib README and updated license notes.
--- a/CHANGELOG.txt	Wed Jan 23 05:00:07 2008 +0000
+++ b/CHANGELOG.txt	Wed Jan 23 05:01:50 2008 +0000
@@ -3,6 +3,7 @@
 01222008 - Upgraded lzma sdk, lzma.c improvements (thanks, Dennis!).
+           Added zlib README, and updated LICENSE.txt.
 01212008 - Fixed HTTP header in physfshttpd.c. Fixed utf-8 to UCS-2 allocation
            size in Windows code.
 12112007 - Fixed incorrect directory test in Windows code (thanks, Buginator!).
--- a/LICENSE.txt	Wed Jan 23 05:00:07 2008 +0000
+++ b/LICENSE.txt	Wed Jan 23 05:01:50 2008 +0000
@@ -22,8 +22,23 @@
        Ryan C. Gordon <>
-(Please note that versions of PhysicsFS prior to 0.1.9 are licensed under
-the GNU Lesser General Public License, which restricts you significantly more.
-For your own safety, please make sure you've got 0.1.9 or later if you plan
-to use physfs in a commercial or closed-source project.)
+Notes, separate from the license. This is not legal advice.
+Versions of PhysicsFS prior to 0.1.9 are licensed under the GNU Lesser General
+ Public License, which restricts you significantly more. For your own safety,
+ please make sure you've got 0.1.9 or later if you plan to use physfs in a
+ commercial or closed-source project.
+Optional pieces of PhysicsFS may fall under other licenses, please consult
+your lawyer for legal advice, which this is not...
+   zlib: if you enable ZIP archive support, PhysicsFS uses zlib. Its license
+         requirements are identical to PhysicsFS.
+         Please see zlib123/README for details.
+   lzma: if you enable LZMA (7zip) support, PhysicsFS uses the lzma sdk.
+         It uses the LGPL license, with exceptions for closed-source programs.
+         Please see lzma/lzma.txt for details.
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/zlib123/README	Wed Jan 23 05:01:50 2008 +0000
@@ -0,0 +1,125 @@
+zlib 1.2.3 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
+ (zlib format), rfc1951.txt (deflate format)
+and rfc1952.txt (gzip format). These documents are also available in other
+formats from
+All functions of the compression library are documented in the file zlib.h
+(volunteer to write man pages welcome, contact 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
+To compile all files and run the test program, follow the instructions given at
+the top of Makefile. In short "make test; make install" should work for most
+machines. For Unix: "./configure; make test; make install". For MSDOS, use one
+of the special makefiles such as Makefile.msc. For VMS, use
+Questions about zlib should be sent to <>, or to Gilles Vollant
+<> for the Windows DLL version. The zlib home page is
+ or 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
+PLEASE read the zlib FAQ before asking
+for help.
+Mark Nelson <> wrote an article about zlib for the Jan. 1997
+issue of  Dr. Dobb's Journal; a copy of the article is available in
+The changes made in version 1.2.3 are documented in the file ChangeLog.
+Unsupported third party contributions are provided in directory "contrib".
+A Java implementation of zlib is available in the Java Development Kit
+See the zlib home page for details.
+A Perl interface to zlib written by Paul Marquess <> is in the
+CPAN (Comprehensive Perl Archive Network) sites
+A Python interface to zlib written by A.M. Kuchling <> is
+available in Python 1.5 and later versions, see
+A zlib binding for TCL written by Andreas Kupries <> is
+availlable at
+An experimental package to read and write files in .zip format, written on top
+of zlib by Gilles Vollant <>, 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, BEOS and by some Mac compilers.
+- For PalmOs, see
+- When building a shared, i.e. dynamic library on Mac OS X, the library must be
+  installed before testing (do "make install" before "make test"), since the
+  library location is specified in the library.
+  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) 1995-2004 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
+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