COMPILE_FLAGS is currently used for two purposes:
- For any target library, add the appropriate Swift optimization flags. This eliminates the add_swift_optimization_flags boilerplate and makes these flags work for all library variants
- For the runtime, pass the appropriate define down when SWIFT_RUNTIME_CLOBBER_FREED_OBJECTS is set, so that all library variants get this setting.
Swift SVN r19444
in r19361. Thank you Doug for pointing out that I did
not import Foundation. Sigh, that build systems have different
behavior in buildbot and elsewhere. Hope this fixes the buildbot failure.
// rdar://16726822
Swift SVN r19367
