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I try to build a "fresh" react-native project in Xcode and run it on the phone but it says library not found for -lDoubleConversion.

When I build it with npx react-native run-ios it runs fine in the simulator.

What am I missing? I found on the net that I am not the only one with this issue but I can't find the solution.

I spent already two days trying to find some solution and I have to say that I slowly stop believing that people are using react to build ios applications :-(

Edit: After several days of investigation, I still can't build it. I have found similar issues on the web and many hints were about the installation of third-party libraries. I tried to run this script:

cd node_modules/react-native/scripts && ./ios-install-third-party.sh && cd ../../../. But with an error:

./ios-install-third-party.sh Unpacking /Users/mastalir/Library/Caches/com.facebook.ReactNativeBuild/glog-0.3.5.tar.gz... ./ios-install-third-party.sh: line 66: ./ios-configure-glog.sh: No such file or directory

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  • Did you run pod install ? Commented Feb 6, 2020 at 10:42
  • Hello, yes i did. Commented Feb 6, 2020 at 12:04
  • But i am not sure if it compiles third party libs correctly. Where should i found the compiled lib? What is confusing to me that xcode is looking for the library in this directory: /Users/mastalir/Library/Developer/Xcode/DerivedData/FirstAppPokus-cbuqwrugcrxcpsfzpmswqpkonnnp/Build/Products/Debug-iphonesimulator/DoubleConversion' but it contains just the corrupted App file and no libs Commented Feb 6, 2020 at 12:21

2 Answers 2

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Finaly a made it working. It was a quite silly issue. I have been opening the .xcodeproj but it is needed to open .xcworkspace file in Xcode. Everything is working now in Xcode.

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After a day of searching. I can't believe it was so simple.
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please add below pods i your Podfile.

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'

goto ios folder and run pod install,

hope this works for you.

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Hello, I tried pod install many times but it doesn't help. In my Podfile i can see all of these pods already. When I run pod install it says Pod installation complete! There are 28 dependencies from the Podfile and 26 total pods installed. Isn't it that the problem that 26 is installed but should be 28?

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