clang: error: clang frontend command failed with exit code 70 (use -v to see invocation)

Question

I don\'t know what causes it.

It does not happen at iPhone 5 and simulators. It have been happened only my original device iPhone 7.

fatal error: err         


        

Answer 1

I used the following steps to get rid of the error:

• Clean cache from Xcode Product->Clean Build Folder
• npm install
• run react-native run-ios
• Build the app using Xcode.

Answer 2

Delete ~/Library/Developer/Xcode/DerivedData worked for me. Issue is due to cache, since your using pods - you need to remove old references

Answer 3

I got this error when i was archiving my app with xcode - while running on sim and physical device worked -, but had my physical device still selected as a scheme. Solution worked for me: clean build folder, and select 'Generic IOS Device' as the scheme.

Answer 4

I got this error when I hardcoded a massive array into a .h file. Worked fine on simulator, threw this error on device.

Changed the array to be empty and it compiled just fine.

Answer 5

This has been driving me nuts and I still can not pinpoint the reason for the crash. But a few of these steps or a combination of these seems to remedy it in the meanwhile.

• Try doing a clean build.
• Run pod install / pod deintegrate.
• Run npm install if you are working on a react native app after deleting node_modules
• Close xcode and then delete ~/Library/Developer/Xcode/DerivedData
• If nothing works try restarting the system.

Answer 6

Delete ~/Library/Developer/Xcode/DerivedData worked for me.