Xcode Build Error: Multiple Commands Produce PrivacyInfo.xcprivacy and Assets.car with React native integration with Existing Apps ios

[vijay-subramani]

Description

Hi team,

I’m encountering a build failure in Xcode due to duplicate resource commands after integrating React Native into a native iOS app (brownfield setup). The same setup is working fine without the react native setup.

Steps to reproduce

1. Clone the repo
2. Run npm install from the project root
3. Navigate to the ios folder and run:
   bundle exec pod install
4. Open .xcworkspace and build or run

💥 You’ll see the duplicate resource error triggered during build.

React Native Version

0.80.1

Affected Platforms

Runtime - iOS

Output of npx @react-native-community/cli info

npm warn cli npm v11.4.2 does not support Node.js v21.7.1. This version of npm supports the following node versions: `^20.17.0 || >=22.9.0`. You can find the latest version at https://nodejs.org/.
info Fetching system and libraries information...
System:
  OS: macOS 15.5
  CPU: (10) arm64 Apple M1 Pro
  Memory: 149.66 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 21.7.1
    path: /usr/local/bin/node
  Yarn:
    version: 1.22.22
    path: /usr/local/bin/yarn
  npm:
    version: 11.4.2
    path: /usr/local/bin/npm
  Watchman:
    version: 2025.06.30.00
    path: /usr/local/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /Users/vijaysubramani/.rvm/gems/ruby-3.1.0/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.5
      - iOS 18.5
      - macOS 15.5
      - tvOS 18.5
      - visionOS 2.5
      - watchOS 11.5
  Android SDK: Not Found
IDEs:
  Android Studio: 2024.2 AI-242.23339.11.2421.12700392
  Xcode:
    version: 16.4/16F6
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 21.0.7
    path: /usr/bin/javac
  Ruby:
    version: 3.1.0
    path: /Users/vijaysubramani/.rvm/rubies/ruby-3.1.0/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react: Not Found
  react-native: Not Found
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Stacktrace or Logs

Multiple commands produce:  
'/Users/vijaysubramani/Library/Developer/Xcode/DerivedData/ReproducerApp-*/Build/Products/Debug-iphoneos/ReproducerApp.app/PrivacyInfo.xcprivacy'

Target 'ReproducerApp' has copy command from:  
/ios/ReproducerApp/PrivacyInfo.xcprivacy  
That command depends on:  
[CP] Copy Pods Resources

Multiple commands produce:  
'/Users/vijaysubramani/Library/Developer/Xcode/DerivedData/ReproducerApp-*/Build/Products/Debug-iphoneos/ReproducerApp.app/Assets.car'

Target 'ReproducerApp': LinkAssetCatalog from:  
/ios/ReproducerApp/Images.xcassets  
That command also depends on:  
[CP] Copy Pods Resources

MANDATORY Reproducer

https://github.com/vijay-subramani/invalidByteIssueReproducer

Screenshots and Videos

[cipolleschi]

Hi there! There are tons of Pods in the reproducer... Does the issue appear if you try to pod install and build an app without all the custom pods?

I also saw this happening in the past because of extensions that shared the same pod twice. I noticed you are installing SDWebImage in both your main pods and appclip pods.

This is most likely a problem in the app setup, rather than on react-native scripts.

[vijay-subramani]

Hi there! There are tons of Pods in the reproducer... Does the issue appear if you try to pod install and build an app without all the custom pods?

I also saw this happening in the past because of extensions that shared the same pod twice. I noticed you are installing SDWebImage in both your main pods and appclip pods.

This is most likely a problem in the app setup, rather than on react-native scripts.

Hey @cipolleschi, Yeah these are all pods from my native project only. Before integrating React native It was just working fine. After adding the dependencies only getting these issue. Not only PrivacyInfo and Assets. Getting same issue for fonts too.

As you said will look into the Main pods and Appclip pods too. And keep you posted. Thanks.

[vijay-subramani]

Hey @cipolleschi, finally i get rid of this issue by doing this in my podfile.

commented the linkage part and used use_frameworks! directly next to platform :ios, min_ios_version_supported.
Hope it'll work for others too. Kindly let me know if this may cause any other issues.

before it was

platform :ios, min_ios_version_supported
use_modular_headers!
prepare_react_native_project!

linkage = ENV['USE_FRAMEWORKS']
if linkage != nil
  Pod::UI.puts "Configuring Pod with #{linkage}ally linked Frameworks".green
  use_frameworks! :linkage => linkage.to_sym
end

now

platform :ios, min_ios_version_supported
use_frameworks!
use_modular_headers!
prepare_react_native_project!