> /build/gpsd-mTGLd5/gpsd-3.3/geoid.c:112: undefined reference to `atan2' > /build/gpsd-mTGLd5/gpsd-3.3/geoid.c:112: undefined reference to `sincos' > /build/gpsd-mTGLd5/gpsd-3.3/geoid.c:130: undefined reference to `atan2' > /build/gpsd-mTGLd5/gpsd-3.3/geoid.c:110: undefined...