Makefile: use compiler version not OS to determine compile flags
Makefile: use compiler version not OS to determine compile flags

peterbarker/dronekit-la,peterbarker/dronekit-la,dronekit/dronekit-la,dronekit/dronekit-la,peterbarker/dronekit-la,dronekit/dronekit-la,peterbarker/dronekit-la,dronekit/dronekit-la