I have some problem in the attached build file for QNX 7, relating to USB driver or library. There are 2 places I've 
marked "FIXME, with the runtime error message produced there".
In the IDE I generate the IFS successfully from this build file, but have the runtime errors upon booting:
"ldd:FATAL: Could not load library libusbdi.so.2"
"io_hid_dlopen, devh-usb.so DLL Error No valid library found"

I successfully boot and interface USB devices with a separate generic QNX 7 installation on the same machine. So I can 
only assume I have a mistake or something missing in the custom build file attached.