Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Core

Which platforms are affected?

iOS

Description

Description
When attempting to build the iOS app, the build process fails with errors related to a redefinition of the Firebase module and issues emitting a precompiled header for the bridging header file. This prevents the app from being built and launched on the simulator.

Environment

• Xcode Version: 16.2
• macOS Version: Sonoma 14.5
• Flutter Version: 3.27.1
• Firebase SDK Version: 3.9.0
• iOS Deployment Target: 18.0

Expected Behavior
The app should build successfully without errors and launch on the simulator.

Observed Behavior
The following errors occur during the build process:

Error (Xcode): redefinition of module 'Firebase'
/Users/xxx/code/foo/my_app/ios/Pods/Firebase/CoreOnly/Sources/module.modulemap:0:7

Error (Xcode): failed to emit precompiled header '/Users/xxx/Library/Developer/Xcode/DerivedData/Runner-elopyndyahddlwghimmamhrolobf/Build/Intermediates.noindex/PrecompiledHeaders/Runner-Bridging-Header-swift_25AUGCNBX54WL-clang_3C7LSRA2V4KFR.pch' for bridging header '/Users/rahmitufanoglu/code/studylife/studylife_app/ios/Runner/Runner-Bridging-Header.h'

Additional Context

• The issue seems to be related to the integration of Firebase and possibly duplicate definitions or module conflicts.
• The error with the precompiled header could indicate issues with the bridging header file or project settings.

Workarounds Tried

1. Cleaned the build folder (Cmd Shift K in Xcode).
2. Deleted the DerivedData folder and rebuilt.
3. Reinstalled CocoaPods dependencies with pod deintegrate && pod install.
4. Verified the Runner-Bridging-Header.h file for correctness.
5. Ensured all Firebase dependencies are up-to-date.

Request for Help

• Guidance on resolving the Firebase module redefinition error.
• Steps to troubleshoot the precompiled header issue.
• Any necessary updates or changes to the project's Podfile, bridging header, or other configurations.

Attachments

• Podfile
• Relevant parts of Runner-Bridging-Header.h
• Screenshot or logs (if applicable).

Feel free to customize further with your specific environment details or any additional troubleshooting steps you’ve tried!

Reproducing the issue

Create a new Flutter project (v. 3.27.1) and integrate firebase_core 3.9.0

Firebase Core version

3.9.0

Flutter Version

3.27.1

Relevant Log Output

Flutter dependencies

Replace this line with the contents of your `flutter pub deps -- --style=compact`.

Additional context and comments

No response