See https://docs.google.com/document/d/1ovaW290Zh7sa-D7bZsDYL0_xVdbBMB1nymIhKqlLl_M/edit?disco=AAAAAFVsqfs#.

How do I compile breakout to run on the Propeller?

Assuming you have a Propeller board connected to your computer and you know what port it is on (default port is /dev/ttyUSB0, see BUILD), this is pretty easy for the examples.

You can type the following at the operating system prompt to rebuild an executable Propeller GCC binary:

  $ b3 build :breakout

To load the executable into the Propeller, type:

  $ b3 build :breakout-load

Note, this will also rebuild breakout binary, so if you're going to build a binary and then load it, you can simply use the last command for both.