/home/pbarker/rc/ardupilot/libraries/DataFlash/LogFile.cpp:361:25:
error: non-constant-expression cannot be narrowed from type 'enum
Rotation' to 'uint8_t' (aka 'unsigned char') in initializer list
[-Wc++11-narrowing]
orient1 : s0 ? s0->orientation() : ROTATION_NONE,