What would prevent them? Didn't they relax the cross-compile restrictions like, 3 years ago? Adobe has a cross-compiler, that I know for sure.

In fact, I did a quick Google search before submitting this reply. Relevant quote, from an Apple press release in 2010:

> In particular, we are relaxing all restrictions on the development tools used to create iOS apps, as long as the resulting apps do not download any code. This should give developers the flexibility they want, while preserving the security we need.