1) How do I know which Qt libraries I have to deploy? But I think the second variant is probably better in this case (don't know yet, and wanna learn both ways for the future) but how do I link it against static Qt libs? Do I have to reinstall Qt itself?

2) I have set "DYLD_LIBRARY_PATH" to "/opt/local/lib" under Run Settings -> Run Environments and that works when started from Qt. Adding "LD_LIBRARY_PATH" gives the same result.