Installing Apache Tomcat 6 on OS X 10.5 Leopard is primarily a matter of downloading the appropriate packages and then following the installation instructions. However, you will have to make a few modifications to some make scripts and source code to successfully compile JSVC on Leopard. To compile the MOD_JK connector or the JSVC daemon, you must have OS X development kit installed.
In this document, the environment variable $CATALINA_HOME refers to the directory where you installed the Tomcat binaries and $JAVA_HOME refers to the directory of the JAVA runtime environment. At the time of this writing, Tomcat 6.0.16 is the latest Tomcat 6.0.x release and requires Java 2 Standard Edition 5 J2SE 5.