CocoaPods/Specs — pull request #2531 by alfonzzz (2013-06-09 20:54:58+00:00)
Title: Update libffi.podspec

no_compact_unwind is no longer supported since ld64-134.9:
http://opensource.apple.com/source/ld64/ld64-134.9/src/ld/Options.cpp

It should be removed from the Podspec as it causes builds to fail.