In my expirience with 4.10 branch, engine compiles only with VS2013. VS2015 hangs with infinity find.exe process on configuring build.
When *.so’s compiled, there is no much .a libraries, like in binary engine version, but, there is one .so and one .apk per es.
I compiled engine with Development Editor (Win64), then Development (Win64), then Shipping (Android), because in binary engine version there is only UE4Game-Android-Shipping-armv7-es2.so and also its size is the smallest. When I trying to package my game, it starts to compile *.so’s again! I’m using development package. Do I need development android .so build?