@waallly_ I present to you ancient wisdom passed from generation to generation of android wizards
https://www.hanshq.net/command-line-android.html

and a makefile setup that works for me, but probably wouldn't work for you without some tweaks
https://notabug.org/namark/sdl_android_test

and btw NDK is a bit broken, last I checked
https://stackoverflow.com/questions/32565759/ndk-build-installs-libraries-even-if-no-change-can-this-be-changed/52265683#52265683