The Sokol libraries by @Andre Weissflog are simple STB-style cross-platform libraries for C and C++ (written in C) that make it easy to create 2d and 3d graphics projects that work on multiple platforms.

As I had an Android phone at the time, I spent some time implementing Android support in the Sokol library that takes care of context creation, sokol_app.h. My changes were merged in January 2019.