I finally made the upgrade to OS/X 10.8 (from 10.6) and XCode 4 - what a nightmare for various reasons out of my control, and now my graphics card fan runs all the time. https://discussions.apple.com/thread/5254795 :-(
On the good side, I can now start to use C++11!
But the reason I'm here is that moving to XCode 4 got rid of the literally thousands of spurious link warnings that I used to get on XCode each time I built and that my diligent work failed to fix. Now, I'm within spitting distance of having no warnings at all in my XCode build...
...except that there are rather a lot of warnings still from Juce code, 60 to be precise.
A few of these are C++ warnings, any of which could be fixed in an instant. To be specific, there are warnings regarding four character constants which should be #pragmaed out of the specific files, and in one case Juce redefines a MACRO without #undef'ing it.
But the majority are Objective C errors and I frankly don't understand them at all.
I could easily post my logs, if this was at all useful...