0.61.5 -> 0.62.2 - Build error with watchOS

[PaitoAnderson]

Environment

System:
    OS: macOS 10.15.4
    CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 2.02 GB / 32.00 GB
    Shell: 5.7.1 - /bin/zsh
  Binaries:
    Node: 12.7.0 - /usr/local/bin/node
    Yarn: 1.22.4 - /usr/local/bin/yarn
    npm: 6.14.4 - /usr/local/bin/npm
    Watchman: 4.9.0 - /usr/local/bin/watchman
  SDKs:
    iOS SDK:
      Platforms: iOS 13.4, DriverKit 19.0, macOS 10.15, tvOS 13.4, watchOS 6.2
  IDEs:
    Xcode: 11.4.1/11E503a - /usr/bin/xcodebuild
  npmPackages:
    react: 16.11.0 => 16.11.0
    react-native: 0.62.2 => 0.62.2
  npmGlobalPackages:
    react-native-create-library: 3.1.2

Upgrading version

0.61.5 -> 0.62.2

Description

Error building watchOS app after upgrading from React Native 61.5:

Undefined symbols for architecture i386:
  "_swift_getOpaqueTypeConformance", referenced from:
      associated type witness table accessor for SwiftUI.View.Body : SwiftUI.View in AwesomeProject_Watch_Extension.ContentView : SwiftUI.View in AwesomeProject_Watch_Extension in ContentView.o
      associated type witness table accessor for SwiftUI.PreviewProvider.Previews : SwiftUI.View in AwesomeProject_Watch_Extension.ContentView_Previews : SwiftUI.PreviewProvider in AwesomeProject_Watch_Extension in ContentView.o
      associated type witness table accessor for SwiftUI.View.Body : SwiftUI.View in AwesomeProject_Watch_Extension.NotificationView : SwiftUI.View in AwesomeProject_Watch_Extension in NotificationView.o
      associated type witness table accessor for SwiftUI.PreviewProvider.Previews : SwiftUI.View in AwesomeProject_Watch_Extension.NotificationView_Previews : SwiftUI.PreviewProvider in AwesomeProject_Watch_Extension in NotificationView.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Reproducible demo

npx react-native init AwesomeProject

Add Watch App for iOS App Target

Accept Defaults

Error building AwesomeProject for iPhone 11 Simulator

[WJimmyCook]

Did you ever figure this out? I'm running into the same error trying to add a Watch App to my RN 62.2 app.

[PaitoAnderson]

@WJimmyCook I did not, no rush for me to update atm.

[iyegoroff]

I fixed similar error in my iOS app by removing "\"$(TOOLCHAIN_DIR)/usr/lib/swift-5.0/$(PLATFORM_NAME)\"", line from LIBRARY_SEARCH_PATHS in project.pbxproj file.

[mtford90]

I fixed similar error in my iOS app by removing "\"$(TOOLCHAIN_DIR)/usr/lib/swift-5.0/$(PLATFORM_NAME)\"", line from LIBRARY_SEARCH_PATHS in project.pbxproj file.

Thanks @iyegoroff - this did the trick for me.

I had to delete this from both the watchapp & watchapp extension targets.

[WJimmyCook]

Thank you @iyegoroff you're a legend!

[baronha]

I fixed similar error in my iOS app by removing "\"$(TOOLCHAIN_DIR)/usr/lib/swift-5.0/$(PLATFORM_NAME)\"", line from LIBRARY_SEARCH_PATHS in project.pbxproj file.

You're my legend

[chadhobson]

Absolute beast... leaving this error below so Google can help the next guy not waste a day and a half of his life.

swift_getTypeByMangledNameInContextInMetadataState