I’m testing my code against latest release of xcode and have discovered that putting an entry into the “Header search path” of the Debug tab doesn’t work. In particular, the associated field is cleared in xcode every time I save the jucer configuration so even if I add it manually in xcode, it won’t stick.
It might not be where you expect. Xcode has two, maybe three places with properties. You’ll find your settings in the target’s properties, not the projects.