ref: 4517c9be9effa6ee98d79df330f20a22e04b5d58
dir: /external/SDL2/android-project/app/jni/src/CMakeLists.txt/
cmake_minimum_required(VERSION 3.6) project(MY_APP) find_library(SDL2 SDL2) add_library(main SHARED) target_sources(main PRIVATE YourSourceHere.c) target_link_libraries(main SDL2)