If I switch the gps from ublox to either nmea or sirf, I get this compile error:
/home/ben/git-work/paparazzi/var/ardrone2_raw/ap/firmwares/rotorcraft/main.o: I\
n function `main':
main.c:(.text.startup+0x7c): undefined reference to `gps_ubx_ucenter_init'
main.c:(.text.startup+0x42f6): undefined reference to `gps_ubx_ucenter_init'
main.c:(.text.startup+0x62da): undefined reference to `gps_ubx_ucenter_periodic\
I presume this means I need to change more config somewhere - any hints?