Fix 'React/RCTDefines.h' File Not Found in React Native (Multiple Commands Produce)

Fix: “Multiple commands produce” error (RNWifi)

Temporary Fix for RNWifi

This fix is specific to RNWifi. Your case may differ slightly, so please also check the original source for more details.

Xcode Configuration Steps

1. Open Xcode

2. Go to Project Navigator → Libraries → RNWifi

3. Select Build Settings

4. Under Targets, select the first target

5. Scroll down to Search Paths

6. Double-click Header Search Paths

7. Click + and add the following path:

   ${SRCROOT}/../../../ios/Pods/Headers
   
   

8. Make sure the path is set to recursive

9. Clean the build:

   Cmd + Shift + K
   
   

10. Rebuild the project:

Cmd + B

Podfile Fix (RNWifi Conflict)

Add or update the following in your Podfile to resolve the Multiple commands produce issue:

use_flipper!

post_install do |installer|
  react_native_post_install(installer)
  __apply_Xcode_12_5_M1_post_install_workaround(installer)

  installer.pods_project.targets.each do |target|

    # Remove conflicting targets
    # RNWifi is the target name causing the issue
    targets_to_ignore = %w(React RNWifi)

    if targets_to_ignore.include?(target.name)
      target.remove_from_project
      next
    end

    # Set minimum iOS deployment target
    target.build_configurations.each do |config|
      config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '12.0'
    end
  end
end

Notes

• This workaround removes duplicate build targets that cause Xcode conflicts.

• After updating the Podfile, always run:

  pod install
  
  

• Then clean and rebuild the project.