About a year ago I posted a VMWare VM that had been set up to build Fennec for Android. That was still pretty early in the development of Fennec for Android and things have changed a lot since then. In particular, we now support developing with a stock NDKr5 (or NDKr6). So, I’ve created a new VM with these updated tools and an updated tree, which can be found here.
We’ll be moving to NDKr5 for our production builders as soon as we can resolve some issues we have with our testing automation. You can follow that progress with bug 657723