To control anything that flies moves, for now.

git submodule update --init
tup variant variants/*.config # Generate variant build directories
tup build-apollo              # To build variant 'apollo'

To add another unit UUU of platform type PPP, add the following:

• variants/UUU.config
• variants/units/UUU/Tupfile
• variants/platforms/PPP/Tupfile

And add the following includes to the root Tupfile:

• include variants/units/UUU/Tupfile
• include variants/platforms/PPP/Tupfile

As necessary, further add the following:

• Appropriate system code in src/system

• Right-handed coordinate system