Experimental Build with CMAKE

Setup

Clone the repository. if you have an old version of git, you may need to pass --recursive to git.
Download Microchip XC16 compiler from http://microchipdeveloper.com/xc16:installation
Download the Peripheral Libraries (PLIBS) for "PIC24/dsPIC® DSCs" from http://www.microchip.com/mplab/compilers#pic24 and install them in the same folder
Make sure the directory of the xc16-gcc compiler in in the PATH
make sure you have a recent version of CMake - 3.5 or better.
You will also have the master branch of aseba cloned

Build

Create a build directory mkdir build && cd build
invoke cmake : cmake -D<path/to/aseba> ..
build: make

Ninja

I recommend you use ninja instead of make. The mast 2 steps then become

invoke cmake: cmake -D<path/to/aseba> -GNinja ..
build: ninja

Upload

To upload the .hex to the robot, use the Thymio firmware upgrader and not a program such as icd3 or pickit3.