Weak-linking multiple frameworks for iPhone Apps (

问题:

How do I specify -weak_framework for multiple frameworks while compiling iPhone apps for older deployment targets?

回答1:

In the Build Phases section of your target, you've got the list of the linked frameworks.

For each one, you can select Required or Optional, optional meaning weak.

回答2:

Add a linker flag -weak_framework <framework_name> Check this link: https://developer.apple.com/library/mac/#documentation/MacOSX/Conceptual/BPFrameworks/Concepts/WeakLinking.html