Build fails with Apple M1 chip when using `arm64` on iOS simulator

This is on a Mac Mini using the new M1 Apple Silicon chip.

It seems that the pods fail to compile when the arm64 architecture is enabled, which is by default. I am not sure why this happens, but it seems to be related to swift.

If I add arm64 to Excluded Architectures the build completes properly, but the entire app gets arm64 disabled and it performs poorly on the simulator.

These warnings appear:

ld: warning: Could not find or use auto-linked library 'swiftCoreLocation'
ld: warning: Could not find or use auto-linked library 'swiftCoreFoundation'
ld: warning: Could not find or use auto-linked library 'swiftDarwin'
ld: warning: Could not find or use auto-linked library 'swiftUIKit'
ld: warning: Could not find or use auto-linked library 'swiftQuartzCore'
ld: warning: Could not find or use auto-linked library 'swiftCore'
ld: warning: Could not find or use auto-linked library 'swiftCoreGraphics'
ld: warning: Could not find or use auto-linked library 'swiftObjectiveC'
ld: warning: Could not find or use auto-linked library 'swiftDispatch'
ld: warning: Could not find or use auto-linked library 'swiftSwiftOnoneSupport'
ld: warning: Could not find or use auto-linked library 'swiftCoreImage'
ld: warning: Could not find or use auto-linked library 'swiftFoundation'
ld: warning: Could not find or use auto-linked library 'swiftMetal'

And afterwards it lists 100+ errors similar to:

Undefined symbols for architecture arm64:
  "method descriptor for Foundation._BridgedStoredNSError.init(_nsError: __C.NSError) -> A", referenced from:
      l_got.$s10Foundation21_BridgedStoredNSErrorP8_nsErrorxSo0D0C_tcfCTq in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "base conformance descriptor for Foundation._BridgedStoredNSError: Foundation.CustomNSError", referenced from:
      l_got.$s10Foundation21_BridgedStoredNSErrorPAA06CustomD0Tb in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "associated type descriptor for Foundation._ErrorCodeProtocol._ErrorType", referenced from:
      l_got.$s10_ErrorType10Foundation01_A12CodeProtocolPTl in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "associated conformance descriptor for Foundation._BridgedStoredNSError.Foundation._BridgedStoredNSError.Code: Foundation._ErrorCodeProtocol", referenced from:
      l_got.$s10Foundation21_BridgedStoredNSErrorP4CodeAC_AA06_ErrorE8ProtocolTn in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "base conformance descriptor for Foundation._ErrorCodeProtocol: Swift.Equatable", referenced from:
      l_got.$s10Foundation18_ErrorCodeProtocolPSQTb in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "method descriptor for static Foundation.CustomNSError.errorDomain.getter : Swift.String", referenced from:
      l_got.$s10Foundation13CustomNSErrorP11errorDomainSSvgZTq in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "base conformance descriptor for Foundation.CustomNSError: Swift.Error", referenced from:
      l_got.$s10Foundation13CustomNSErrorPs5ErrorTb in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "protocol descriptor for Foundation.CustomNSError", referenced from:
      l_got.$s10Foundation13CustomNSErrorMp in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "method descriptor for Foundation._ObjectiveCBridgeableError.init(_bridgedNSError: __shared __C.NSError) -> A?", referenced from:
      l_got.$s10Foundation26_ObjectiveCBridgeableErrorP15_bridgedNSErrorxSgSo0F0Ch_tcfCTq in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "base conformance descriptor for Foundation._BridgedStoredNSError: Foundation._ObjectiveCBridgeableError", referenced from:
      l_got.$s10Foundation21_BridgedStoredNSErrorPAA26_ObjectiveCBridgeableErrorTb in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "protocol descriptor for Foundation._ObjectiveCBridgeableError", referenced from:
      l_got.$s10Foundation26_ObjectiveCBridgeableErrorMp in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "method descriptor for Swift.Error._getEmbeddedNSError() -> Swift.AnyObject?", referenced from:
      l_got.$ss5ErrorP19_getEmbeddedNSErroryXlSgyFTq in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "method descriptor for Swift.Error._code.getter : Swift.Int", referenced from:
      l_got.$ss5ErrorP5_codeSivgTq in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "method descriptor for Swift.RawRepresentable.rawValue.getter : A.RawValue", referenced from:
      l_got.$sSY8rawValue03RawB0QzvgTq in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "associated type descriptor for Swift.RawRepresentable.RawValue", referenced from:
      l_got.$s8RawValueSYTl in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "base conformance descriptor for Foundation._ObjectiveCBridgeableError: Swift.Error", referenced from:
      l_got.$s10Foundation26_ObjectiveCBridgeableErrorPs0D0Tb in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "method descriptor for Swift.Hashable._rawHashValue(seed: Swift.Int) -> Swift.Int", referenced from:
      l_got.$sSH13_rawHashValue4seedS2i_tFTq in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "method descriptor for Swift.Hashable.hashValue.getter : Swift.Int", referenced from:
      l_got.$sSH9hashValueSivgTq in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "protocol descriptor for Swift.Equatable", referenced from:
      l_got.$sSQMp in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "value witness table for Builtin.Int32", referenced from:
      full type metadata for __C.CLAuthorizationStatus in libreact-native-geolocation-service.a(RNFusedLocation.o)
  "_swift_deallocObject", referenced from:
      l_objectdestroy in libreact-native-geolocation-service.a(RNFusedLocation.o)
      l_objectdestroy.2 in libreact-native-geolocation-service.a(RNFusedLocation.o)
      l_objectdestroy.5 in libreact-native-geolocation-service.a(RNFusedLocation.o)
      l_objectdestroy.8 in libreact-native-geolocation-service.a(RNFusedLocation.o)
      l_objectdestroy.11 in libreact-native-geolocation-service.a(RNFusedLocation.o)
      l_objectdestroy.15 in libreact-native-geolocation-service.a(RNFusedLocation.o)
      l_objectdestroy.18 in libreact-native-geolocation-service.a(RNFusedLocation.o)

Any suggestions for things to try would be appreciated!

[andreialecu]

I was able to get it to build by adding an empty swift file to the project so that a bridging header is created.

And more importantly removing this:

				LIBRARY_SEARCH_PATHS = (
					"\"$(TOOLCHAIN_DIR)/usr/lib/swift/$(PLATFORM_NAME)\"",
					"\"$(TOOLCHAIN_DIR)/usr/lib/swift-5.0/$(PLATFORM_NAME)\"",
					"\"$(inherited)\"",
				);

From project.pbxproj for both debug and release. I haven’t tested for side effects, but now it builds and runs in arm64 mode on the simulator.

I’m not sure why this is required, might be an issue with React Native.

[svnm]

For me it was this change

https://github.com/Agontuk/react-native-geolocation-service/commit/2502ffd082b610d78fd32ca987e256468ad90e4b

So fixing this and patching the package fixed it for me

In node_modules/react-native-geolocation-service Open react-native-geolocation-service.podspec

Change s.dependency "React" back to s.dependency "React-Core"

Follow the steps to add a patch https://www.npmjs.com/package/patch-package

All worked fine after that after yarn install, pod install