In this episode we extract all of the settings from a standard iPhone project and move them over to a .xcconfig file for Xcode to use as a base for our projects. Doing so can make our configuration a bit more explicit, allow us to add comments on why certain settings are necessary, and also to put them under version control to make it easy to spot changes.
This is a companion discussion topic for the original entry at https://nsscreencast.com/episodes/154-xcconfig-files