Target Platform Preferences
Target Platform refers to the platform against which you are developing and testing your plug-ins. The target platform encompasses the location of the target, the list of plug-ins constituting the target, the target environment and launching arguments.
Target Location
The target location typically denotes the location of an Eclipse installation. When searching the target location for plug-ins, PDE assumes a typical Eclipse installation layout, i.e. plug-ins are expected to be in a plugins/ subdirectory of the target location. Similarly, features are assumed to be in a features/ subdirectory of the target location.
Not all targets are Eclipse installations. Therefore PDE is flexible when it comes to locating plug-ins in the target. In the absence of a plugins/ subdirectory, PDE assumes the target location itself is the directory where plug-ins are located.
Target Definitions
Target Definitions are .target files that encapsulate all aspects of a target (location, content, environment, etc.).
The Pre-defined Targets section of the
Window > Preferences... > Plug-in Development > Target Platform
preference page is initially populated by definitions contributed via the org.eclipse.pde.core.targets extension point.
You can browse for additional target definitions in the workspace using the Browse... button.
To preview the target profile before you apply it, click on the Target link. This will open a new window showing the content of the target definition.
To load the target, press the Load Target button. This will update all the tabs on the Target Platform preference page based on the content of the selected target definition.
For more information, refer to the following documents: