React Native - npx react-native run-ios doesn't work after initializing the project

Question

After reading https://reactnative.dev/docs/environment-setup, I created a react-native project using npx react-native init ***.

It was successful, so, I tried to run the project using npx react-native run-ios, and got the below error:

** BUILD FAILED **


The following build commands failed:
    CompileC /Users/loser/Library/Developer/Xcode/DerivedData/test0205-dasunahpjpavelgmslwgmvjhesxy/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/Flipper.build/Objects-normal/x86_64/FlipperRSocketResponder.o /Users/loser/Documents/projects/test0205/ios/Pods/Flipper/xplat/Flipper/FlipperRSocketResponder.cpp normal x86_64 c++ com.apple.compilers.llvm.clang.1_0.compiler
(1 failure)

Answer 1

It's because of use_flipper in Podfile for iOS project.

use_flipper!

So, I was needed to indicate Flipper-Folly version with use_flipper as

use_flipper!({ 'Flipper-Folly' => '2.3.0' })

It worked perfectly after that change.

Answer 2

Following Everest Climber answer

1. In Podfile under ios/ folder

   Change use_flipper! to use_flipper!({ 'Flipper-Folly' => '2.3.0' })

2. cd ios
3. pod install
4. pod update
5. cd .. && npx react-native run-ios (to run the application)

This worked for me. Hopefully, it works for you too

Answer 3

I could solve this issue after disabling Flipper in ios/Podfile.

1. Fix Podfile as shown in below image

2. cd ios
3. delete Pods folder and Podfile.lock
4. pod install
5. pod update
6. cd .. && npx react-native run-ios

Answer 4

This issue is caused by flipper-folly pod spec updates

Remove/uninstall react-native-cli, just use npx

Try this on react-native 0.63.4 (previous stable version).

Remember it doesn't work for latest 0.64.0 with XCode 12.5

Inside ios/Podfile replace use_flipper! with:

use_flipper!({ 'Flipper-Folly' => '2.5.3', 'Flipper' => '0.87.0','Flipper-RSocket' => '1.3.1' })

pod install --repo-update

npx react-native run-ios

if you don't need to use flipper or still getting some issues try commenting out flipper inside podfile and install pods using command

pod install --repo-update

#use_flipper!()
  #post_install do |installer|
    #flipper_post_install(installer)
  #end