Is there an easy way to build for all platforms at once?

I have a package which supports all platforms.

At the moment, if I want to check that I have got all my availability attributes right, then I have to manually select Mac as a build target, then build, manually select TV, then build, etc

Is there an easy way to say 'build for each supported platform and show me any bugs'
Is there an easy way to build for all platforms at once?
 
 
Q