JUCE and React Native - linker error "ld: library not found for -lReact"

Question

I'm getting this linker error using CocoaPods with React Native: ld: library not found for -lReact

I have followed the guide at https://facebook.github.io/react-native/docs/embedded-app-ios.html#content

I am trying to integrate with an existing iOS project, which is a JUCE C++ project. JUCE generates the Xcode project file so I believe I need to use the Cocoapods method.

The steps I'm doing are:

• create or save iOS build from Introjucer project
• run npm install react-native from root of project (alongside the .jucer file)
• create Podfile in Builds/iOS as per the guide (but with ../../node_modules as the path)
• run pod install
• open workspace in Xcode
• adjust GCC_PREPROCESSOR_DEFINITIONS to include $(inherited)
• build

An example project displaying this issue is at https://github.com/adamski/juce-native-navigation/tree/react-native-cocoapods

I think there is something going on with the Introjucer generated project, as I tried the whole process on a fresh new Xcode project and it builds fine.

I have also tried adding libReact.a to the 'Link Binary With Libraries' section but that does not seem to have helped.

Answer 1

I looked for differences between the Introjucer generated project and the Xcode generated one.

One significant difference was the CONFIGURATION_BUILD_DIR or "Per-configuration Build Products Path"

I copied over the setting from the Xcode generated project $(BUILD_DIR)/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)

This allowed the linking to complete and gave a successful build :)