Mercurial > flash_v2
comparison packages/services/compress/zlib/current/src/FAQ @ 156:b939e9cada46
Merge from eCos master repository on 2001-03-29-21:44:39-BST
| author | jlarmour |
|---|---|
| date | Fri, 06 Apr 2001 17:20:13 +0000 |
| parents | |
| children | c92d7972c02c |
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| 155:70a4cc6d69d2 | 156:b939e9cada46 |
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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 |