The following code compiles fine when compiling as Mac OSX 10.6 as the active SDK (linked with the 10.5 frameworks, 10.5 set as the base SDK)
IOBluetoothHostController *controller = [IOBluetoothHostController defaultController];
However, if I compile it with Mac OSX 10.5 as the active SDK, I get an error message saying that IOBluetoothHostController is undeclared. How can I resolve this?