Using an empty LLDB target which can cause slow memory reads from remote devices

Question

I am using Xcode 12 and I am getting an warning as below:

Warning: Error creating LLDB target at path '/Users/ABC/Library/Developer/Xcode/DerivedData/demowatchapp-blfzfuqxehfteaaofqpdlfuurtdr/Build/Products/Debug-watchsimulator/watchapp.app'- using an empty LLDB target which can cause slow memory reads from remote devices.

I have checked that there are solutions to this from xcode 6 as to change the architecture to arm64. I checked that as well in build settings and it is mentioned as standard architecture. I have read it as with new xode apple itself make it as standard architecture i.e arm64, armv7. So now not sure what is wrong. I have also checked that my iOS app, watch app and the extension all have the same architecture.

I have also checked below link which are not working for me: Xcode - Error creating LLDB target

Answer 1

My Xcode 12.2 settings: I use OS BigSur release

I found that the setting Architectures>Build Active Architecture Only>Release must be set to Yes

Answer 2

I am adding an Apple Watch component to my existing iOS app using SwiftUI and I am also running into this warning in Xcode 12.0 (Yeah yeah, I need to update). In addition I was not getting the "Hello World!" to even show on the simulator. I thought the LLDB warning was related to nothing showing on the watch simulator, however just wanted to point out that my Watch App will still compile if I first launch the iOS iPhone simulator. Then launch the Watch Simulator after that. Here are some screenshots if you are in the same boat.