There is also special miner software available, its possible that this runs on your version of OSX.
I don't have a mac, but this guide described how to compile and use CGMiner on OSX.
Download cURL http://curl.haxx.se/download/curl-7.35.0.tar.gz using Safari or Firefox
Now in Terminal type: cd downloads/curl-7.35.0 (or get to that folder somehow)
enter: ./configure
enter: make
enter: sudo make install
enter: cd ..
Download pkg-config http://pkgconfig.freedesktop.org/releases/pkg-config-0.28.tar.gz using Safari or Firefox
enter into terminal: cd pkg-config-0.28 (or get to that folder somehow)
enter: ./configure --with-internal-glib
enter: make
enter: sudo make install
enter: cd ..
Download libtool http://ftpmirror.gnu.org/libtool/libtool-2.4.2.tar.gz using Safari or Firefox
enter into terminal: cd libtool-2.4.2 (or get to that folder somehow)
enter: ./configure
enter: make
enter: sudo make install
enter: cd ..
Download CGMiner (https://github.com/iamwayne5/cgminer-master) from https://github.com/iamwayne5/cgminer-master/archive/master.zip using Safari or Firefox
enter into terminal: cd cgminer-master (or get to that folder somehow)
enter: CFLAGS="-O2 -Wall -march=native" ./configure --enable-keccak
enter: make
enter: sudo make install
Then start it with the same command as above:
cgminer --keccak -o stratum+tcp://maxcoinpool.com:4000 -u username -p password
The complete guide and more info is available here: http://www.reddit.com/r/maxcoinproject/comments/1xbkvl/how_to_setup_cgminer_on_a_mac_osx_and_start/