Class is implemented in both, One of the two will be used. Which one is undefined

I have an issue with dependencies included in Cocoapods.

I have a Framework project (MyFramework target), which also has App target (MyFrameworkExampleApp). When I try to run the app, I get a console full of errors like so:

Class PodsDummy_AFNetworking is implemented in both /private/var/containers/Bundle/Application/AD85D7EC-2652-4019-94FB-C799D0FBA69B/MyFrameworkExampleApp.app/Frameworks/MyFramework.framework/MyFramework (0x1019a0438) and /var/containers/Bundle/Application/AD85D7EC-2652-4019-94FB-C799D0FBA69B/MyFrameworkExampleApp.app/MyFrameworkExampleApp (0x10107c558). One of the two will be used. Which one is undefined.

The thing is, the errors come from the libraries included only in MyFramework target

Here are the contents of my podfile:

# Specify platform.
platform :ios, '9.0'

# Let's ignore all warnings from all pods
inhibit_all_warnings!

target 'MyFramework’ do

    # ReactiveCocoa for easier binding between UI and data models.
    pod 'ReactiveCocoa', '< 3.0'

    # ReactiveViewModel for easier handling of active/inactive view models.
    pod 'ReactiveViewModel', '0.3'

    # An Objective-C extension with some nice helpers including @weakify/@strongify.
    pod 'libextobjc', '~> 0.4.1'

    # AFNetworking Security stuff
    pod 'AFNetworking/Security', '~> 2.5.4'

    # KZPropertyMapper to easily map JSON dicts to properties
    pod "KZPropertyMapper"

    # Simple wrapper for KeyChain
    pod 'UICKeyChainStore', '~> 2.0.6'

    # Animated gifs
    pod 'FLAnimatedImage', '~> 1.0'

    # Firebase push notifications
    pod 'Firebase/Core'
    pod 'Firebase/Messaging'

    # Easy image downloading with cache.
    pod 'SDWebImage', '~> 3.7.2'

    # Activity indicator for RBSlider
    pod 'DGActivityIndicatorView'

end

target 'MyFrameworkExampleApp' do

    # Progress indicator
    pod 'MBProgressHUD', '~> 1.0.0'

    # Color picker
    pod 'iOS-Color-Picker'

    # Hockey SDK
    pod 'HockeySDK', '~> 5.0.0'

end

As you can see, App target does not inherit any pods, nor do I have any global pods. What might be the reason for this?

Solution

I don't know the reason, but if you open your app's Pods-[AppName].debug.xcconfig file that cocoapods creates you'll find OTHER_LDFLAGS and you'll see it links to the same frameworks you link in your framework. So if you remove -framework [Duplicated framework] the warning disappears.

Seems to be a cocoapods error