Swift. Could not build objective-c module 'Alamofire'

Question

When this happens, just build the frameworks separately first. In your case:

• Change the scheme to Alamofire
• Build (⌘B)
• Change back to your scheme
• Run

Go into Developer/Xcode/DerivedData and delete the folder for your framework. (Or just delete DerivedData itself)

If you have a build of you app in a running simulator you'll need to delete the app there.

Then Clean & Build

This always works for me:

1. Quit Xcode
2. Delete ~/Library/Developer/Xcode/DerivedData
3. Change to your framework’s scheme and build ⌘B
4. Change to your app’s scheme and build ⌘B

Deleting the DerivedData folder and cleaning and building the project solved this issue for me.