Relative paths in a JUCER project

I have seen references to this topic in the forum, but couldn’t quite find an answer. Is there a way to specify project-relative paths in PROJUCER in such a way that they expand to a full absolute path when the project is opened in the IDE? Some macro such as $(JucerDir), for example. I’m thinking particularly of header search paths, especially when the target project directory is not a subdirectory of the directory containing the .jucer project.

I don’t think there’s any kind of special macro expansion. But, relative paths from the IDE projects themselves do work.