ld: library not found for -lDoubleConversion React Native 0.59

Question

I have this error

❌  ld: library not found for -lDoubleConversion

❌  clang: error: linker command failed with exit code 1 (use -v to see invocation)


erro         


        

Answer 1

First of all, make sure that Libraries -> React.xcodeproj -> ThirdParty -> double-conversion exists and a static library is being produced from it, like this:

Then, if are you're using cocoapods, make sure to add DoubleConversion to your Podfile:

target 'MyApp' do
  pod 'React', :path => "../node_modules/react-native", :subspecs => [
    'Core',
    'CxxBridge',
    'DevSupport',
    # the following ones are the ones taken from "Libraries" in Xcode:
    'RCTAnimation',
    'RCTActionSheet',
    'RCTBlob',
    'RCTGeolocation',
    'RCTImage',
    'RCTLinkingIOS',
    'RCTNetwork',
    'RCTSettings',
    'RCTText',
    'RCTVibration',
    'RCTWebSocket'
  ]
  pod 'yoga', :path => "../node_modules/react-native/ReactCommon/yoga"

  # Here it goes
  pod 'DoubleConversion', :podspec => "../node_modules/react-native/third-party-podspecs/DoubleConversion.podspec"

  pod 'glog', :podspec => "../node_modules/react-native/third-party-podspecs/glog.podspec"
  pod 'Folly', :podspec => "../node_modules/react-native/third-party-podspecs/Folly.podspec"
end

And finally, if none of this worked so far, there's a script you can manually run in order to resolve React's third-party dependencies.

Just go to node_modules/react-native and type:

$ ./scripts/ios-install-third-party.sh

Important: Always run it inside node_modules/react-native. Because, as far as I know, the script uses relative paths in order to store third-party's source code and react native will always look for it at node_modules/react-native/third-party. So just make sure to run it in the right place.

Note: This script is, probably, already running as a build phase on your project.