mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-21 14:09:44 +08:00
101 lines
3.5 KiB
Plaintext
101 lines
3.5 KiB
Plaintext
|
|
Frequently Asked Questions about zlib
|
|
|
|
|
|
If your question is not there, please check the zlib home page
|
|
http://www.zlib.org which may have more recent information.
|
|
The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
|
|
|
|
|
|
1. Is zlib Y2K-compliant?
|
|
|
|
Yes. zlib doesn't handle dates.
|
|
|
|
2. Where can I get a Windows DLL version?
|
|
|
|
The zlib sources can be compiled without change to produce a DLL. If you
|
|
want a precompiled DLL, see http://www.winimage.com/zLibDll/ . Questions
|
|
about the zlib DLL should be sent to Gilles Vollant (info@winimage.com).
|
|
|
|
3. Where can I get a Visual Basic interface to zlib?
|
|
|
|
See
|
|
* http://www.winimage.com/zLibDll/cmp-z-it.zip
|
|
* http://www.dogma.net/markn/articles/zlibtool/zlibtool.htm
|
|
* contrib/visual-basic.txt in the zlib distribution
|
|
|
|
4. 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").
|
|
|
|
5. deflate() or inflate() returns Z_BUF_ERROR
|
|
|
|
Before making the call, make sure that avail_in and avail_out are not
|
|
zero. When setting the parameter flush equal to Z_FINISH, also make sure
|
|
that avail_out is big enough to allow processing all pending input.
|
|
|
|
6. Where's the zlib documentation (man pages, etc.)?
|
|
|
|
It's in zlib.h for the moment, and Francis S. Lin has converted it to a
|
|
web page zlib.html. Volunteers to transform this to Unix-style man pages,
|
|
please contact Jean-loup Gailly (jloup@gzip.org). Examples of zlib usage
|
|
are in the files example.c and minigzip.c.
|
|
|
|
7. Why don't you use GNU autoconf or libtool or ...?
|
|
|
|
Because we would like to keep zlib as a very small and simple
|
|
package. zlib is rather portable and doesn't need much configuration.
|
|
|
|
8. I found 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
|
|
the corresponding source to us at zlib@gzip.org . Do not send
|
|
multi-megabyte data files without prior agreement.
|
|
|
|
9. Why do I get "undefined reference to gzputc"?
|
|
|
|
If "make test" produces something like
|
|
|
|
example.o(.text+0x154): undefined reference to `gzputc'
|
|
|
|
check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
|
|
/usr/X11R6/lib. Remove any old versions, then do "make install".
|
|
|
|
10. I need a Delphi interface to zlib.
|
|
|
|
See the directories contrib/delphi and contrib/delphi2 in the zlib
|
|
distribution.
|
|
|
|
11. Can zlib handle .zip archives?
|
|
|
|
See the directory contrib/minizip in the zlib distribution.
|
|
|
|
12. Can zlib handle .Z files?
|
|
|
|
No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt
|
|
the code of uncompress on your own.
|
|
|
|
13. How can I make a Unix shared library?
|
|
|
|
make clean
|
|
./configure -s
|
|
make
|
|
|
|
14. Why does "make test" fail on Mac OS X?
|
|
|
|
Mac OS X already includes zlib as a shared library, and so -lz links the
|
|
shared library instead of the one that the "make" compiled. For zlib
|
|
1.1.3, the two are incompatible due to different compile-time
|
|
options. Simply change the -lz in the Makefile to libz.a, and it will use
|
|
the compiled library instead of the shared one and the "make test" will
|
|
succeed.
|
|
|
|
15. I have a question about OttoPDF
|
|
|
|
We are not the authors of OttoPDF. The real author is on the OttoPDF web
|
|
site Joel Hainley jhainley@myndkryme.com.
|