Why is Xcode on my M1 Mac trying to build for `iOS Simulator-x86_64`? Why is it not building for an `arm` based simulator?

user_1375015 0
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I have an M1 MacBook Air.

When building for a simulator in Xcode, I am seeing the following warnings and errors:

ld: warning: ignoring file /Users/kon/Library/Developer/Xcode/DerivedData/InvisibleComputersApp-hktlnhvaoskvxkcdhnahydmbodzw/Build/Products/Debug-iphonesimulator/GoogleSignIn.o, building for iOS Simulator-x86_64 but attempting to link with file built for unknown-arm64
ld: warning: ignoring file /Users/kon/Library/Developer/Xcode/DerivedData/InvisibleComputersApp-hktlnhvaoskvxkcdhnahydmbodzw/Build/Products/Debug-iphonesimulator/AppAuth.o, building for iOS Simulator-x86_64 but attempting to link with file built for unknown-arm64
ld: warning: ignoring file 
/Users/kon/Library/Developer/Xcode/DerivedData/InvisibleComputersApp-hktlnhvaoskvxkcdhnahydmbodzw/Build/Products/Debug-iphonesimulator/GTMAppAuth.o, building for iOS Simulator-x86_64 but attempting to link with file built for unknown-arm64
ld: warning: ignoring file /Users/kon/Library/Developer/Xcode/DerivedData/InvisibleComputersApp-hktlnhvaoskvxkcdhnahydmbodzw/Build/Products/Debug-iphonesimulator/AppAuthCore.o, building for iOS Simulator-x86_64 but attempting to link with file built for unknown-arm64
ld: warning: ignoring file /Users/kon/Library/Developer/Xcode/DerivedData/InvisibleComputersApp-hktlnhvaoskvxkcdhnahydmbodzw/Build/Products/Debug-iphonesimulator/GTMSessionFetcherCore.o, building for iOS Simulator-x86_64 but attempting to link with file built for unknown-arm64
Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_GIDConfiguration", referenced from:
      objc-class-ref in GlobalState.o
  "_OBJC_CLASS_$_GIDSignIn", referenced from:
      objc-class-ref in GoogleAuthService.o
      objc-class-ref in GoogleRefreshTokenService.o
      objc-class-ref in InvisibleComputersAppApp.o
  "_OBJC_CLASS_$_GIDSignInButton", referenced from:
      objc-class-ref in LoginView.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

This sounds to me like Xcode is somehow trying to build an x86 binary? Why is it even trying to do that, aren't the simulators arm based on the M1 Macs?

How can I

apple-m1 swift xcode
2 Answers

You can try opening Xcode with "Open using Rosetta" check ON.

  1. Quit Xcode
  2. Go to your Applications folder
  3. Right click Xcode then select "Get Info"
  4. Check "Open using Rosetta"
  5. Open Xcode

Open using Rosetta

user_44468510

If you have a dependency that does not support arm64, you can tell the build system to skip arm64 (this building x86_64) by adding "arm64" to the list of excluded architectures (EXCLUDED_ARCHS) in your targets' build settings.

user_7261060
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