[Paparazzi-devel] Undefined reference when using px4flow

[Dirk Steindorf]

Hi,

I want to use the flow sensor, but when I try to build everything I  
get the following error:
  
/home/finken/paparazzi/var/Quad_Lia_ovgu/ap/modules/optical_flow/px4flow.o: In  
function `mavlink_register_msg':
/home/finken/paparazzi/sw/airborne/./modules/datalink/mavlink_decoder.h:166:  
undefined reference to `mavlink_tp'
collect2: error: ld returned 1 exit status
make[1]: *** [/home/finken/paparazzi/var/Quad_Lia_ovgu/ap/ap.elf] Error 1
make[1]: Leaving directory `/home/finken/paparazzi/sw/airborne'
make: *** [ap.compile] Error 2

In the airframe I tried to load it like this:
<modules>
  <load name="px4flow.xml" />
</modules>

Do you an idea what might cause the error?

Cheers,
Dirk