How do I specify -weak_framework for multiple frameworks while compiling iPhone apps for older deployment targets?
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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.
Add a linker flag -weak_framework
<
framework_name> Check this link: https://developer.apple.com/library/mac/#documentation/MacOSX/Conceptual/BPFrameworks/Concepts/WeakLinking.html