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1 zlib 0.92 is a beta version of a general purpose compression library.
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2
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3 The data format used by the zlib library is described in the
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4 files zlib-3.1.doc, deflate-1.1.doc and gzip-4.1.doc, available
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5 in ftp.uu.net:/pub/archiving/zip/doc.
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6
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7 All functions of the compression library are documented in the file
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8 zlib.h. A usage example of the library is given in the file example.c
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9 which also tests that the library is working correctly.
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10
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11 To compile all files and run the test program, just type: make test
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12 (For MSDOS, use one of the special makefiles such as Makefile.msc.)
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13 To install the zlib library (libgz.a) in /usr/local/lib, type: make install
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14 To install in a different directory, use for example: make install prefix=$HOME
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15 This will install in $HOME/lib instead of /usr/local/lib.
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16
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17 The changes made in version 0.92 are documented in the file ChangeLog.
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18 The main changes since 0.9 are:
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19 - don't assume that char is signed (problem on SGI)
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20 - Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h
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21 - Document the memory requirements in zconf.h
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22 - added "make install"
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23 - added support for DJGPP and Pyramid
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24 - fix an inflate bug for stored blocks.
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25 - various speedups
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26
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27 On MSDOS, this version works in both large and small model. However
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28 small model compression works only for small values of MAX_MEM_LEVEL
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29 and MAX_WBITS (see zconf.h). Small model decompression should work up
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30 to MAX_WBITS=15. This version of zlib does not support small or
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31 medium model with far allocation of big objects.
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32
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33
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34 Copyright (C) 1995 Jean-loup Gailly and Mark Adler
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35
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36 This software is provided 'as-is', without any express or implied
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37 warranty. In no event will the authors be held liable for any damages
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38 arising from the use of this software.
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39
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40 Permission is granted to anyone to use this software for any purpose,
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41 including commercial applications, and to alter it and redistribute it
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42 freely, subject to the following restrictions:
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43
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44 1. The origin of this software must not be misrepresented; you must not
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45 claim that you wrote the original software. If you use this software
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46 in a product, an acknowledgment in the product documentation would be
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47 appreciated but is not required.
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48 2. Altered source versions must be plainly marked as such, and must not be
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49 misrepresented as being the original software.
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50 3. This notice may not be removed or altered from any source distribution.
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51
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52 Jean-loup Gailly Mark Adler
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53 gzip@prep.ai.mit.edu madler@cco.caltech.edu
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54
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55 If you use the zlib library in a product, we would appreciate *not*
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56 receiving lengthy legal documents to sign. The sources are provided
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57 for free but without warranty of any kind. The library has been
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58 entirely written by Jean-loup Gailly and Mark Adler; it does not
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59 include third-party code.
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60
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61 If you redistribute modified sources, we would appreciate that you include
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62 in the file ChangeLog history information documenting your changes.
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