HI there,
So , Not being 100% on Mac or your situ, I would offer this: The Embedded BSP are being fazed out, I would stay with the NON-embed and add Adafruit LIBs where needed. Or the option to make the JUMP to the Nrf_SDK… Way easier than you think. Grab a DK board(developer board) no clones, no hassle, Everything runs & you get a J-Link included(built-in)… That alone is worth the cost of admissions. Which BTW is FREE, No one has more free dev courses on the NET.
You can Follow along at your pace , use the exact samples and demo’s. In a week you will know your way around and in 2 weeks you’ll be So far ahead of anything Arduino. 
IMHO, It is not good use of one’s time to learn more in the arduino arena, due to the unsavory intentions of QUALCOMM and their cohorts.
Your errors are BSP related, switch and it should all compile.
Post what area you are stuck, we can get you going , no problem.
HTH
GL 
PJ