It's been something like 3 years since I've worked in AOSP but IIRC mingw is for windows builds of adb. Someone else called out that AVR stuff is for ADK. The

It's been something like 3 years since I've worked in AOSP but IIRC mingw is for windows builds of adb. Someone else called out that AVR stuff is for ADK. The Android build tree is more than Android itself. It also builds includes a lot of the supporting tools and libraries for developers.