For standard DTP Ganymede development, this should be the folder containing Eclipse 3.3.x. In the configuration dialog shown above, you can Browse. You must make sure that the target platform is set correctly. An Eclipse 3.4, latest M or RC (with associated GEF version and EMF 2.2.2) location.An Eclipse 3.3.x (latest x, with associated EMF and GEF versions) location.To use this for developing DTP Ganymede, you should have: The target platform configuration is located in Window->Preferences.->Plug-in Development->Target Platform and looks like: You can develop DTP Ganymede using Eclipse 3.3.x or 3.4 (perhaps other versions too, if you wish), but you must be sure to set the proper target platform.
Given the past confusion in this area, this page is designed to explain how to achieve the required configuration, regardless of your preferred Eclipse development version. Doing otherwise runs the very real risk (as was demonstrated by a number of build breakages during DTP 1.5) that Eclipse 3.4 features will be used, hence invalidating the code in the build environment. In order for this to work, all DTP committers must be developing against a Eclipse 3.3.x target platform with a 1.4.2 VM. We are doing this in an attempt to make DTP Ganymede available on both Eclipse 3.3.x/3.4 and 1.4.2+ VMs. The primary test environment is the latest M/RC for Eclipse 3.4 (with associated EMF and GEF versions) and a Sun 1.5 VM. As described in the DTP Ganymede build documentation, we are building against Eclipse 3.3.x (latest x, with associated GEF version and EMF 3.2.2) and a Sun 1.4.2 VM.