Cant compile 3.3 for APM 2.6

Hi,
I was finaly able to Compile Copter 3.2.1 on Linux with the makefile.
But now I want to Compile 3.3 and it sais it cant be compiled for APM2 but in missionplanner I can download and install it on my APM?
How can I compile this version?

@Jo_Ho,

have a look at the release notes of AC 3.3:

Currently at line 239:

Changes from 3.2.1

  1. Only support fast CPUs boards (Pixhawk, VRBrain, etc) and drop support for APM1, APM2 (sorry!)

So unfortunately it is not possible to compile it for APM 2.6.

Best regards,
Thorsten