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| Frequently Asked Questions about zlib |
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| If your question is not there, please check the zlib home page |
| http://www.cdrom.com/pub/infozip/zlib/ which may have more recent information. |
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| 1) I need a Windows DLL |
| 2) I need a Visual Basic interface to zlib |
| 3) compress() returns Z_BUF_ERROR |
| 4) deflate or inflate returns Z_BUF_ERROR |
| 5) Where is the zlib documentation (man pages, etc...)? |
| 6) Why don't you use GNU autoconf, libtool, etc...? |
| 7) There is a bug in zlib. |
| 8) I get "undefined reference to gzputc" |
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| 1) I need a Windows DLL |
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| The zlib sources can be compiled without change to produce a DLL. |
| If you want a precompiled DLL, see http://www.winimage.com/zLibDll |
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| 2) I need a Visual Basic interface to zlib |
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| See http://www.tcfb.com/dowseware/cmp-z-it.zip |
| http://web2.airmail.net/markn/articles/zlibtool/zlibtool.htm |
| and contrib/visual-basic.txt |
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| 3) compress() returns Z_BUF_ERROR |
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| Make sure that before the call of compress, the length of the |
| compressed buffer is equal to the total size of the compressed buffer |
| and not zero. For Visual Basic, check that this parameter is passed |
| by reference ("as any"), not by value ("as long"). |
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| 4) deflate or inflate returns Z_BUF_ERROR |
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| Make sure that before the call avail_in and avail_out are not zero. |
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| 5) Where is the zlib documentation (man pages, etc...)? |
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| It's in zlib.h for the moment. Volunteers to transform this |
| to man pages, please contact jloup@gzip.org. Examples of zlib usage |
| are in the files example.c and minigzip.c. |
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| 6) Why don't you use GNU autoconf, libtool, etc...? |
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| Because we would like to keep zlib as a very small and simple package. |
| zlib is rather portable and doesn't need much configuration. |
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| 7) There is a bug in zlib. |
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| Most of the time, such problems are due to an incorrect usage |
| of zlib. Please try to reproduce the problem with a small |
| program and send us the corresponding source at zlib@quest.jpl.nasa.gov |
| Do not send multi-megabyte data files without prior agreement. |
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| 8) I get "undefined reference to gzputc" |
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| If "make test" produces something like |
| example.o(.text+0x174): |
| check that you don't have old files libz.* in /usr/lib, /usr/local/lib |
| or /usr/X11R6/lib. Remove old versions then do "make install". |
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