@Hidden_Markov
Hi, the package must have been built incorrectly somehow, these are the dependencies specified in the package metadata:
Depends: libasound2 (>= 1.0.16), libc6 (>= 2.14), **libflite1 (>= 1.4-release-9~)**, libgcc1 (>= 1:4.1.1), libqt5core5a (>= 5.4.0), libqt5gui5 (>= 5
.3.0) | libqt5gui5-gles (>= 5.3.0), libqt5network5 (>= 5.0.2), libqt5opengl5 (>= 5.0.2) | libqt5opengl5-gles (>= 5.0.2), libqt5printsupport5 (>=
5.0.2), libqt5qml5 (>= 5.0.2), libqt5quick5 (>= 5.0.2) | libqt5quick5-gles (>= 5.0.2), libqt5script5 (>= 5.0.2), libqt5serialport5 (>= 5.1.0),
libqt5sql5 (>= 5.0.2), libqt5svg5, libqt5test5 (>= 5.0.2), libqt5widgets5 (>= 5.2.0), libsdl2-2.0-0 (>= 2.0.0), libsndfile1 (>= 1.0.20), libssl1
.0.0 (>= 1.0.0), libstdc++6 (>= 5.2), zlib1g (>= 1:1.1.4), qtdeclarative5-qtquick2-plugin | qml-module-qtquick2
These aren’t in the project control file:
https://github.com/ArduPilot/apm_planner/blob/master/debian/control
So they must be added at packaging time on a machine with higher libflite version than standard, at a guess.