reactos/dll/win32/zlib/FAQ

   1
   2                 Frequently Asked Questions about zlib
   3
   4
   5 If your question is not there, please check the zlib home page
   6 http://www.zlib.org which may have more recent information.
   7 The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
   8
   9
  10  1. Is zlib Y2K-compliant?
  11
  12     Yes. zlib doesn't handle dates.
  13
  14  2. Where can I get a Windows DLL version?
  15
  16     The zlib sources can be compiled without change to produce a DLL. If you
  17     want a precompiled DLL, see http://www.winimage.com/zLibDll/ . Questions
  18     about the zlib DLL should be sent to Gilles Vollant (info@winimage.com).
  19
  20  3. Where can I get a Visual Basic interface to zlib?
  21
  22     See
  23         * http://www.winimage.com/zLibDll/cmp-z-it.zip
  24         * http://www.dogma.net/markn/articles/zlibtool/zlibtool.htm
  25         * contrib/visual-basic.txt in the zlib distribution
  26
  27  4. compress() returns Z_BUF_ERROR
  28
  29     Make sure that before the call of compress, the length of the compressed
  30     buffer is equal to the total size of the compressed buffer and not
  31     zero. For Visual Basic, check that this parameter is passed by reference
  32     ("as any"), not by value ("as long").
  33
  34  5. deflate() or inflate() returns Z_BUF_ERROR
  35
  36     Before making the call, make sure that avail_in and avail_out are not
  37     zero. When setting the parameter flush equal to Z_FINISH, also make sure
  38     that avail_out is big enough to allow processing all pending input.
  39
  40  6. Where's the zlib documentation (man pages, etc.)?
  41
  42     It's in zlib.h for the moment, and Francis S. Lin has converted it to a
  43     web page zlib.html. Volunteers to transform this to Unix-style man pages,
  44     please contact Jean-loup Gailly (jloup@gzip.org). Examples of zlib usage
  45     are in the files example.c and minigzip.c.
  46
  47  7. Why don't you use GNU autoconf or libtool or ...?
  48
  49     Because we would like to keep zlib as a very small and simple
  50     package. zlib is rather portable and doesn't need much configuration.
  51
  52  8. I found a bug in zlib.
  53
  54     Most of the time, such problems are due to an incorrect usage of
  55     zlib. Please try to reproduce the problem with a small program and send
  56     the corresponding source to us at zlib@gzip.org . Do not send
  57     multi-megabyte data files without prior agreement.
  58
  59  9. Why do I get "undefined reference to gzputc"?
  60
  61     If "make test" produces something like
  62
  63        example.o(.text+0x154): undefined reference to `gzputc'
  64
  65     check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
  66     /usr/X11R6/lib. Remove any old versions, then do "make install".
  67
  68 10. I need a Delphi interface to zlib.
  69
  70     See the directories contrib/delphi and contrib/delphi2 in the zlib
  71     distribution.
  72
  73 11. Can zlib handle .zip archives?
  74
  75     See the directory contrib/minizip in the zlib distribution.
  76
  77 12. Can zlib handle .Z files?
  78
  79     No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt
  80     the code of uncompress on your own.
  81
  82 13. How can I make a Unix shared library?
  83
  84     make clean
  85     ./configure -s
  86     make
  87
  88 14. Why does "make test" fail on Mac OS X?
  89
  90     Mac OS X already includes zlib as a shared library, and so -lz links the
  91     shared library instead of the one that the "make" compiled. For zlib
  92     1.1.3, the two are incompatible due to different compile-time
  93     options. Simply change the -lz in the Makefile to libz.a, and it will use
  94     the compiled library instead of the shared one and the "make test" will
  95     succeed.
  96
  97 15. I have a question about OttoPDF
  98
  99     We are not the authors of OttoPDF. The real author is on the OttoPDF web
 100     site Joel Hainley jhainley@myndkryme.com.