Any way to stop a build?

Sometimes my builds take a long time. And sometimes, it's right before the boss wants to see a demo. And sometimes, as soon as I hit 'build' I remember that I needed to change one more thing.

I want to stop the build.

I hit Esc. I don't see any 'cancel' button or menu. Is there a way? It must be something obvious I'm overlooking.

Unfortunately not. You have to let the in-progress build finish, make you changes, and the make a new one.

http://forum.unity3d.com/threads/32781-Cancel-button-on-generating-occlusion

Force Quit.