Error: Could not build Objective-C module 'Firebase'

Question

When I compile the application I get an error equal to this:

Could not build Objective-C module 'Firebase'

This error appear in import Firebase of my file swift.

Solution 1

There is only one way to solve this issue.

1. Quit Xcode.
2. Delete project's temp files located at ~/Library/Developer/Xcode/DerivedData
3. Delete ProjectName.xcworkspace
4. Delete Podfile.lock file and Pods folder
5. Run pod install.
6. Open the newly created ProjectName.xcworkspace file and build.

Solution 2

Build (⌘ + B) worked for me.

Solution 3

I am using Swift 4 and Xcode 9. All I have to do is selecting FirebaseCore Scheme.

On Xcode:

Product->Scheme->FirebaseCore.

If you don't have FirebaseCore go to Manage Schemes and select it. Then try again.

Solution 4

This may fix your problem:

1. Quit the Xcode. (Don't just close the Xcode window, right click and Quit it explicitly).

2. Go to ~/Library/Developer/Xcode/DerivedData and delete the project folder. (Simply delete all the folders).

3. Clean and Build the project.

If still error exist:

Do steps 1 and 2 and follow this steps:

4. Change scheme to Firebase and Build (Command + B).

5. Change back to your app scheme and Run again.

Solution 5

I opened the project with .xcodeproj and I installed Firebase with cocoapods. I got the same error. But I just close the project and open it with .xcworkspace.

The alert has gone. Firebase was the first library on my project. So I kept using .xcodeproj file.

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Comments

[Cons Bulaquena]

If I delete ProjectName.xcworkspace, does it delete the previous code there?

[Dimitris Bouzikas]

@ConsBulaquena Actually, you have to delete the xcworkspace, it doesn't include the code you wrote but is automatically generated by Pod, don't worry about it.

[aremvee]

worked for me after I applied the first answer. Also had to change the FIRApp.configure() to FirebaseApp.configure()

[Jonas]

I don't have a Xcode folder I ~/Library/Developer

[Dimitris Bouzikas]

@Jonas weird, open Xcode, go to Preferences->Locations and share what you see. Check mine: ibb.co/dUvgk8

[Jonas]

@DimitrisBouzikas thanks a lot! It was under ~/User/ME/Library/... and there the Library folder was hidden. (Made it visible with Shift+cmd+(dot))

[nommer]

worked for me without having to apply Dimitris Bouzikas answer, and i was adding firebase to an existing project for those doing the same

[Kaushal Topinkatti]

Fantastic my friend you helped me, Thank You. Was searching for this from past 4 days. Thank You. Guys its works!!!

[Mario Rojas]

I tried Dimitri's solution but it didnt work, ended up missing necessary files, this solution did fix the problem

[Lucy]

This worked for me too! (I also restarted Xcode using 'open myproject.xcworkspace after installing Pods in case that matters)

[Dimitris Bouzikas]

@MarioRojas Can you determine what are the necessary files? Study a bit how Pod works.

[Samarth Kejriwal]

The above steps didnt solve my issue, please help me.

[Admin]

solved my problem. Note that this will delete your existing build schemes.

[Abhijith]

Please try other answers. Your case can be different.

[Brent]

This was the only answer that worked for me using Xcode 9.4 on Ionic 3 app.

[Matthew Anderson]

When I switch my scheme back to my app scheme, this no longer works. Could someone please explain?

[Ayrad]

the first two steps worked for me. I didn't have to delete the workspace file, I just had to open it instead of the project file after quitting xcode and deleting derived data

[Julian Wagner]

for future readers, there is a library folder of the computer and one of the user, most of the time it is in the users one

[Julian Wagner]

for those who don't know how to run pod install: stackoverflow.com/questions/30418062/…

[Ruairí Oliver]

I only needed step 4 and 5

[shinriyo]

Product => Edit Scheme... Short cut is command + <

[ArdenDev]

Thank YOU @marceh , this helped me. After trying the steps above it didn't work.

[Milovan Tomašević]

Thanks a lot, you saved my time! xCode v12

[Roman Soviak]

stackoverflow.com/a/28433526/7856586 if you cannot find DerivedData folder

[cseh_17]

This is the only solution that worked for me. Thanks!

[Israr Ahmad]

tried many other solutions. But this one worked. Really helped.

[Mamedoff]

Worked for me on my M1 Pro device. Thank you.

[Genki]

I'd like to vote this as one of the funniest answers.

[Qadir Hussain]

this worked for me too. I disabled "Find implicit Dependencies" and build was working fine too, I recently got this issue after updating the xcode. Error gone by enabling this option again on the new updated xCode.