npx react-native init myapp && yarn ios -- results in BUILD FAILED

[denysonique]

Description

npx react-native init app fails to build with resulting output:

** BUILD FAILED **
The following build commands failed:
	CompileC /Users/dennis/Library/Developer/Xcode/DerivedData/myapp-diiznqhlbausysarsnhokwpbxdra/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/React-Codegen.build/Objects-normal/x86_64/FBReactNativeSpec-generated.o /tmp/myapp/ios/build/generated/ios/FBReactNativeSpec/FBReactNativeSpec-generated.mm normal x86_64 objective-c++ com.apple.compilers.llvm.clang.1_0.compiler
(1 failure)

Version

0.70.2

Output of npx react-native info

System:
    OS: macOS 10.15.7
    CPU: (28) x64 AMD Ryzen 9 5950X 16-Core Processor
    Memory: 625.87 MB / 17.58 GB
    Shell: 5.7.1 - /bin/zsh
  Binaries:
    Node: 14.16.0 - ~/.nvm/versions/node/v14.16.0/bin/node
    Yarn: 1.22.19 - ~/.yarn/bin/yarn
    npm: 6.14.11 - ~/.nvm/versions/node/v14.16.0/bin/npm
    Watchman: 2022.08.29.00 - /usr/local/bin/watchman
  Managers:
    CocoaPods: 1.11.3 - /usr/local/bin/pod
  SDKs:
    iOS SDK:
      Platforms: iOS 14.4, DriverKit 20.2, macOS 11.1, tvOS 14.3, watchOS 7.2
    Android SDK: Not Found
  IDEs:
    Android Studio: Not Found
    Xcode: 12.4/12D4e - /usr/bin/xcodebuild
  Languages:
    Java: Not Found
  npmPackages:
    @react-native-community/cli: Not Found
    react: 18.1.0 => 18.1.0
    react-native: 0.70.2 => 0.70.2
    react-native-macos: Not Found
  npmGlobalPackages:
    *react-native*: Not Found

Steps to reproduce

$ npx react-native init myapp
$ cd ./myapp && npx react-native run-ios

Snack, code example, screenshot, or link to a repository

$ npx react-native init myapp
$ cd ./myapp && npx react-native run-ios

build error:

``
Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/React-CoreModules.build/Objects-normal/x86_64/RCTKeyboardObserver.o


** BUILD FAILED **


The following build commands failed:
	CompileC /Users/dennis/Library/Developer/Xcode/DerivedData/myapp-diiznqhlbausysarsnhokwpbxdra/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/React-Codegen.build/Objects-normal/x86_64/FBReactNativeSpec-generated.o /tmp/myapp/ios/build/generated/ios/FBReactNativeSpec/FBReactNativeSpec-generated.mm normal x86_64 objective-c++ com.apple.compilers.llvm.clang.1_0.compiler
(1 failure)

[dmytrorykun]

Hey @denysonique could you please clean /Users/dennis/Library/Developer/Xcode/DerivedData/, and then try to reproduce the issue.
If it persists, please attach full react-native run-ios output here.

[denysonique]

@dmytrorykun

I did what you suggested and after more careful inspection it boils down to multiple instances of the following error:

In file included from /Users/dennis/dev/RNApp/ios/build/generated/ios/FBReactNativeSpec/FBReactNativeSpec-generated.mm:14:
/Users/dennis/dev/RNApp/ios/build/generated/ios/FBReactNativeSpec/FBReactNativeSpec.h:2216:46: error: 'value' is unavailable: introduced in iOS 12.0
  d[@"window"] = window.has_value() ? window.value().buildUnsafeRawValue() : nil;

Which seems to be a duplicate of #34106.

However thank you for your time and trying to help me.