react native - Xcode throws 'atomic_notify_one<unsigned long>' is unavailable

Question

I installed Xcode 12 on my Mac, tried building my react native app that runs perfectly on android, and get 'atomic_notify_one<unsigned long>' is unavailable. This is the most information I get from the error.

Answer 1

Instead of commenting out flipper here is a solution that worked for me.

Update flipper in your Podfile to look like this

use_flipper!({ 'Flipper-Folly' => '2.5.3', 'Flipper' => '0.87.0', 'Flipper-RSocket' => '1.3.1' })

Run pod repo update inside the ios folder

And finally, update your project pods using

pod install