73 lines
2.2 KiB
Text
73 lines
2.2 KiB
Text
|
|
||
|
|
Frequently Asked Questions about zlib
|
||
|
|
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
|
||
|
|
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"
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
1) I need a Windows DLL
|
||
|
|
|
||
|
|
The zlib sources can be compiled without change to produce a DLL.
|
||
|
|
If you want a precompiled DLL, see http://www.winimage.com/zLibDll
|
||
|
|
|
||
|
|
|
||
|
|
2) I need a Visual Basic interface to zlib
|
||
|
|
|
||
|
|
See http://www.tcfb.com/dowseware/cmp-z-it.zip
|
||
|
|
http://web2.airmail.net/markn/articles/zlibtool/zlibtool.htm
|
||
|
|
and contrib/visual-basic.txt
|
||
|
|
|
||
|
|
3) compress() returns Z_BUF_ERROR
|
||
|
|
|
||
|
|
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").
|
||
|
|
|
||
|
|
|
||
|
|
4) deflate or inflate returns Z_BUF_ERROR
|
||
|
|
|
||
|
|
Make sure that before the call avail_in and avail_out are not zero.
|
||
|
|
|
||
|
|
|
||
|
|
5) Where is the zlib documentation (man pages, etc...)?
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
|
||
|
|
6) Why don't you use GNU autoconf, libtool, etc...?
|
||
|
|
|
||
|
|
Because we would like to keep zlib as a very small and simple package.
|
||
|
|
zlib is rather portable and doesn't need much configuration.
|
||
|
|
|
||
|
|
|
||
|
|
7) There is a bug in zlib.
|
||
|
|
|
||
|
|
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.
|
||
|
|
|
||
|
|
|
||
|
|
8) I get "undefined reference to gzputc"
|
||
|
|
|
||
|
|
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".
|
||
|
|
|