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| author | Mark Adler <madler@alumni.caltech.edu> | 2011-09-09 23:20:29 -0700 |
|---|---|---|
| committer | Mark Adler <madler@alumni.caltech.edu> | 2011-09-09 23:20:29 -0700 |
| commit | 14763ac7c6c03bca62c39e35c03cf5bfc7728802 (patch) | |
| tree | f1055d11ef7b282b698ce7c40e1a9c061413cbdf /FAQ | |
| parent | c34c1fcbb19852ca35216ad66276f4f86af3fc22 (diff) | |
| download | zlib-1.1.3.tar.gz zlib-1.1.3.tar.bz2 zlib-1.1.3.zip | |
zlib 1.1.3v1.1.3
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| -rw-r--r-- | FAQ | 72 |
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| 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.cdrom.com/pub/infozip/zlib/ which may have more recent information. | ||
| 7 | |||
| 8 | |||
| 9 | 1) I need a Windows DLL | ||
| 10 | 2) I need a Visual Basic interface to zlib | ||
| 11 | 3) compress() returns Z_BUF_ERROR | ||
| 12 | 4) deflate or inflate returns Z_BUF_ERROR | ||
| 13 | 5) Where is the zlib documentation (man pages, etc...)? | ||
| 14 | 6) Why don't you use GNU autoconf, libtool, etc...? | ||
| 15 | 7) There is a bug in zlib. | ||
| 16 | 8) I get "undefined reference to gzputc" | ||
| 17 | |||
| 18 | |||
| 19 | |||
| 20 | 1) I need a Windows DLL | ||
| 21 | |||
| 22 | The zlib sources can be compiled without change to produce a DLL. | ||
| 23 | If you want a precompiled DLL, see http://www.winimage.com/zLibDll | ||
| 24 | |||
| 25 | |||
| 26 | 2) I need a Visual Basic interface to zlib | ||
| 27 | |||
| 28 | See http://www.tcfb.com/dowseware/cmp-z-it.zip | ||
| 29 | http://web2.airmail.net/markn/articles/zlibtool/zlibtool.htm | ||
| 30 | and contrib/visual-basic.txt | ||
| 31 | |||
| 32 | 3) compress() returns Z_BUF_ERROR | ||
| 33 | |||
| 34 | Make sure that before the call of compress, the length of the | ||
| 35 | compressed buffer is equal to the total size of the compressed buffer | ||
| 36 | and not zero. For Visual Basic, check that this parameter is passed | ||
| 37 | by reference ("as any"), not by value ("as long"). | ||
| 38 | |||
| 39 | |||
| 40 | 4) deflate or inflate returns Z_BUF_ERROR | ||
| 41 | |||
| 42 | Make sure that before the call avail_in and avail_out are not zero. | ||
| 43 | |||
| 44 | |||
| 45 | 5) Where is the zlib documentation (man pages, etc...)? | ||
| 46 | |||
| 47 | It's in zlib.h for the moment. Volunteers to transform this | ||
| 48 | to man pages, please contact jloup@gzip.org. Examples of zlib usage | ||
| 49 | are in the files example.c and minigzip.c. | ||
| 50 | |||
| 51 | |||
| 52 | 6) Why don't you use GNU autoconf, libtool, etc...? | ||
| 53 | |||
| 54 | Because we would like to keep zlib as a very small and simple package. | ||
| 55 | zlib is rather portable and doesn't need much configuration. | ||
| 56 | |||
| 57 | |||
| 58 | 7) There is a bug in zlib. | ||
| 59 | |||
| 60 | Most of the time, such problems are due to an incorrect usage | ||
| 61 | of zlib. Please try to reproduce the problem with a small | ||
| 62 | program and send us the corresponding source at zlib@quest.jpl.nasa.gov | ||
| 63 | Do not send multi-megabyte data files without prior agreement. | ||
| 64 | |||
| 65 | |||
| 66 | 8) I get "undefined reference to gzputc" | ||
| 67 | |||
| 68 | If "make test" produces something like | ||
| 69 | example.o(.text+0x174): | ||
| 70 | check that you don't have old files libz.* in /usr/lib, /usr/local/lib | ||
| 71 | or /usr/X11R6/lib. Remove old versions then do "make install". | ||
| 72 | |||
