To build Jakara Taglibs packages you need to install Maven.
To checkout and build the latest code in trunk, run:
To build only one of the taglibs, checkout the trunk/ directory for the subcomponent at https://svn.apache.org/repos/asf/tomcat/taglibs/ and run mvn clean install.
The main site is built by checking out the site/ directory:
svn co http://svn.apache.org/repos/asf/jakarta/taglibs/proper/site site
Taglib specific sites are built by directly from that taglib.
To build, run mvn clean site.
The sites are deployed by copying their source onto the Tomcat site's docs directory, located in the Tomcat site project: https://svn.apache.org/repos/asf/tomcat/site/trunk. It's not a very automated solution.