[Phure]

Hi!

I would like to link an object file which uses the mySQL c API in OS X, but I get the following result:

<BLOCKQUOTE><font size="1"face="Geneva, Verdana, Arial">code:</font><HR><pre><font size=1 face=courier>
& cc -c -I/usr/local/include/mysql main.c
& cc -o myThorcli main.o -L/usr/local/lib/mysql -lmysqlclient -lm
/usr/bin/ld: Undefined symbols:
_compress
_uncompress
</font>[/code]

This should work on linux and other unices, it's from a book. I don't find a way around this problem. Any ideas?

Stefan

[sambeau]

I had exactly the same problem. After a lot of banging my head againsed a wall I discovered that you need to link it to zlib.
You need to install and lizlib library - then you compile your client with:

<BLOCKQUOTE><font size="1"face="Geneva, Verdana, Arial">code:</font><HR><pre><font size=1 face=courier>cc -o progname progname.c -L/usr/local/lib/mysql -lmysqlclient -lz </font>[/code]

There are a few places to get zlib for OSX. I'll see if I can find one for you. The best place for this kind of stuff is the darwin sites.

[sambeau]

You'll find zlib here

http://port.mosxsw.com/port/zlib/

straight from the site:

zlib 1.1.3 binary for Mac OS X

zlib is a free compression library; it provides compression capabilities to other programs like libpng. The master zlib site is http://www.info-zip.org/pub/infozip/zlib/. zlib appears to be already present in Mac OS X PB, but libpng isn't satisfied with that version, so I built the standard version. To use my binary version, download zlib-1.1.3-macosx.tgz (don't bother uncompressing it with StuffIt), open Terminal and:

1. cd directory containing zlib-1.1.3-mosx.tgz
2. su
3. enter your root password
4. tar xzf zlib-1.1.3-mosx.tgz
5. cd zlib-1.1.3-mosx
6. ./install.sh
7. exit

The offical generic version of zlib compiles as-is under Mac OS X (if you have the software build tools). make and make install should install /usr/local/lib/libz.a and the headers.

------------------------------------------------------------------------

cheers,
sam.

[bobDalgleish]

Originally posted by sambeau:
<STRONG>You'll find zlib here

http://port.mosxsw.com/port/zlib/

straight from the site:

zlib 1.1.3 binary for Mac OS X

zlib is a free compression library; ...</STRONG>

Actually, zlib is already installed on Mac OS X out of the box. zlib.h is present in the Kernel framework. The Perl module Compress::Zlib uses it.

Embarrassingly enough, I don't know where the library is in the system frameworks directories. It links fine from Perl.

[Angus_D]

Originally posted by bobDalgleish:
<STRONG>Actually, zlib is already installed on Mac OS X out of the box. zlib.h is present in the Kernel framework. The Perl module Compress::Zlib uses it.

Embarrassingly enough, I don't know where the library is in the system frameworks directories. It links fine from Perl.
</STRONG>

It's in /usr/lib, methinks.

[Phure]

Thank you, you guys are really great.

[sambeau]

Funny that. I can definitely remember installing zlib to get gd working at some point. Was it in the public beta?

Talking of gd has anyone managed to get freetype working with it -- I've been banging my head against another brick wall all day.