Upstream is built with maven. Need some hacks to build with pdebuild.
eclipse-gef-3.8.0-0.3.20120402.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/eclipse-gef-3.8.0-0.3.20120402.fc17
Package eclipse-gef-3.8.0-0.3.20120402.fc17: * should fix your issue, * was pushed to the Fedora 17 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing eclipse-gef-3.8.0-0.3.20120402.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-6147/eclipse-gef-3.8.0-0.3.20120402.fc17 then log in and leave karma (feedback).
eclipse-gef-3.8.0-0.3.20120402.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.