The current stable version of Dev does not allow for that (yet).
You can however download the toolchain (or set up your own), and compile the firmware with that. There’s a neat windows installer over here, with netbeans included. Take a look 
The current stable version of Dev does not allow for that (yet).
You can however download the toolchain (or set up your own), and compile the firmware with that. There’s a neat windows installer over here, with netbeans included. Take a look