$ castle-engine --os=android --cpu=aarch64 --compiler=fpc --mode=debug compile
Compiling project "kam_mobile" for OS / CPU "android / aarch64" in mode "debug".
FPC executing...
Free Pascal Compiler version 3.2.2 [2026/08/04] for aarch64
Copyright (c) 1993-2021 by Florian Klaempfl and others
Compiled library for Android in castle-engine-output/android/libkam_mobile_android_aarch64.so