Install GD Library on Leopard in 5 easy steps
1. Download PHP 5.2.5 (beta6 or newer) and unpack
curl -O http://www2.entropy.ch/download/php5-5.2.5-6-beta.tar.gz tar -xzf php5-*-beta.tar.gz
2. Move the extracted php5 folder into /usr/local
sudo mv php5 /usr/local/
3. Change the owner to root
sudo chown -R root:admin /usr/local/php5
4. Open httpd.conf and comment out the existing LoadModule line if you are already using the default php5 and add the following line to set the new path of the module.
#LoadModule php5_module libexec/apache2/libphp5.so LoadModule php5_module local/php5/libphp5.so
5. Copy your existing php.ini into the new location
sudo cp /etc/php.ini /usr/local/php5/lib
Restart Apache and you now have GD support.