Looks like I may have just needed to add MidiHandler.hpp as a header file. This gave me another error with line 68 in ./Tools/gcc-arm-none-eabi-5_2-2015q4/arm-none-eabi/include/stdlib.h but I just commented it out haha 
Looks like I may have just needed to add MidiHandler.hpp as a header file. This gave me another error with line 68 in ./Tools/gcc-arm-none-eabi-5_2-2015q4/arm-none-eabi/include/stdlib.h but I just commented it out haha