Specifying a subproject's Configuration in Xcode

Question

I have an Xcode project (A) referencing another project (B). By default (as far as I understand it) Xcode will implicitly build the configuration for t

Answer 1

Yes, this is not naturally supported by Xcode; when you build a target, it builds one configuration of itself and of all dependent targets.

The workaround, as Rob mentioned, is to have a dependent target that's an Aggregate Target type that comprises a single Run Script build phase, which simply invokes xcodebuild -configuration Release (or whatever).