A common question regarding CocoaPods and Swift is which OS versions are supported.
- Swift is supported on OS X 10.9 / iOS 7 and newer, as stated by Apple numerous times.
- There is no support for building static archives with Swift (see http://openradar.appspot.com/radar?id=5536341827780608).
- Dynamic frameworks are supported on all versions of OS X.
- Dynamic frameworks are unsupported on iOS versions prior to 8:
ld: warning: embedded dylibs/frameworks only run on iOS 8 or later.
From this we can conclude that it is not possible to support Swift on any other platforms than OS X 10.9/10.10 and iOS 8.
efficient, works for me.