AP_NavEKF3: move definition of MAX_EKF_CORES

[peterbarker]

if you're not including the AP_NavEKF3 header then you don't get this definition and then you won't be able to compile the DAL.

[Ryanf55]

How did you produce the error?
On master, this compiles:
./waf configure --board sitl --disable-EKF3 && nice ./waf plane

[peterbarker]

How did you produce the error? On master, this compiles: ./waf configure --board sitl --disable-EKF3 && nice ./waf plane

Moved the include of AP_NavEKF3/AP_NavEKF3.h to a different file in libraries/AP_AHRS and added conditional compilation guards around that new header file. See my pr/active-ekf-type branch if you're curious.

This can't be replicated in master ATM - but it is clearly a layering problem.

[Ryanf55]

How did you produce the error? On master, this compiles: ./waf configure --board sitl --disable-EKF3 && nice ./waf plane

Moved the include of AP_NavEKF3/AP_NavEKF3.h to a different file in libraries/AP_AHRS and added conditional compilation guards around that new header file. See my pr/active-ekf-type branch if you're curious.

This can't be replicated in master ATM - but it is clearly a layering problem.

Ah I see, thanks! Good change.