docs/manual/platforms/vita.md
ux0:/data/diasurgical/devilution/.cd build
cmake -DCMAKE_TOOLCHAIN_FILE=${VITASDK}/share/vita.toolchain.cmake -DCMAKE_BUILD_TYPE=Release ..
make
There's special section Controller in diablo.ini file, that allows you to adjust controls:
[Controller]
Mapping=
Enable Rear Touchpad=1