I have a bunch of Eclipse plugins and features, which I would like to build as part of a nightly (headless) build. I've managed to do this using a complicated setup involving manually specifying paths to Eclipse plugin jars, copying customTargets.xml, etc.
Is there really no simpler solution? Isn't there a way to just point out my Update Site's site.xml and say "build"; i.e. the equivalent of clicking "Build All" in the Update Site project?
Given that all the answers to this question are all 3-5 years old, I figure an update would be useful to others.
For those who want to add the building of Eclipse plugins to the CI process, I recommend they check out the Eclipse Tycho project. This is essentially a Maven plugin that allows you you to wrap eclipse projects within Maven project. With this we use Atlassian Bamboo to build our Eclipse plugin. This also allows us to use the Maven jarsigner plugin to sign our plugin files.