It's easy to get Eclipse to work on Linux PPC, but it's work. So I decided to share my copy of it.
You can get it here at IBM's website. Just use the "iSeries/pSeries 32bit" version, if you have a Macintosh.
And don't forget to set your JAVA_HOME to the place where you installed it and to add your bin directory to the PATH ;-) Here i.e. JAVA_HOME=/opt/IBMJava2-ppc-142 ; PATH=/opt/IBMJava2-ppc-142/bin:$PATH ; export JAVA_HOME PATH
Here are the resulting SWT-libraries. Please extract them and put them into your jre/bin directory, i.e. /opt/IBMJava2-ppc-142/jre/bin/
Here is the source I used to compile them. I compiled on a Debian Sarge on a Powerbook; please feel free to alter the makefile for other platforms. To compile them for your own, you need GTK and Gnome development libraries as well as Mozilla headers and libraries.
I already compiled it, just get the precompiled Eclipse from here if you want to. It is the 3.1M1 stream stable build which I used here. And I have added the starter application.
To compile it for your own, just use the source from the Eclipse Homepage. To compile the starter, use the source in plugins/platform-launcher/library/gtk.
... please don't hesitate to send me a mail to eclipse-ppc@dingens.org. But unfortunately I'll get no money for this work, I just use it for my own ;-) So please understand, that sometimes it can last a little longer until you'll have an answer.