React Native iOS构建失败：重复模拟器实例与clang编译错误

错误日志 #

2023-04-10 12:54:39.743 xcodebuild[37229:209830] DVTCoreDeviceEnabledState: DVTCoreDeviceEnabledState_Disabled set via user default (DVTEnableCoreDevice=disabled)
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:iOS Simulator, id:F74E3465-A58E-4B17-BF2B-1CB79F225F2F, OS:16.4, name:iPhone 14 }
{ platform:iOS Simulator, id:F74E3465-A58E-4B17-BF2B-1CB79F225F2F, OS:16.4, name:iPhone 14 }
** BUILD FAILED **


The following build commands failed:
        CompileC /Users/devansh/Library/Developer/Xcode/DerivedData/RN_App-eibylxcwymbqneczxtsodzlvaqxg/Build/Intermediates.noindex/Pods.build/Debug-iphonesimulator/React-Codegen.build/Objects-normal/arm64/FBReactNativeSpec-generated.o /Users/devansh/Desktop/rn-temp-engin2.0/ios/build/generated/ios/FBReactNativeSpec/FBReactNativeSpec-generated.mm normal arm64 objective-c++ com.apple.compilers.llvm.clang.1_0.compiler (in target 'React-Codegen' from project 'Pods')
(1 failure)

已尝试的无效操作 #

• 卸载并重装Xcode 14.3
• 清理npm缓存
• 删除Pods并重新安装
• 清理Xcode的Derived Data
• 删除重复的模拟器设备

可行解决方案 #

• 确认React Native版本兼容性：Xcode 14.3要求React Native版本至少为0.70.7或0.71.5，若项目RN版本低于此，直接升级到兼容版本。
• 调整React-Codegen的架构设置：
  1. 打开Xcode项目，导航到Pods项目下的React-Codegen target
  2. 进入Build Settings，搜索Architectures
  3. 设置Architectures为Standard Architectures (arm64, x86_64)
  4. 找到Excluded Architectures，在Debug-iphonesimulator配置下移除arm64（Intel芯片Mac适用；M系列芯片可保留）
• 重新生成Codegen相关文件：
  1. 删除项目根目录下的ios/build文件夹
  2. 执行命令清理RN缓存：npx react-native clean
  3. 重新安装npm依赖：npm install
  4. 进入ios目录更新Pods：cd ios && pod install --repo-update
• 启用CoreDevice：在终端执行命令defaults write com.apple.dt.Xcode DVTEnableCoreDevice YES，重启Xcode后再尝试构建
• 调整C++编译库设置：
  1. 在React-Codegen target的Build Settings中搜索C++ Standard Library
  2. 设置为libc++ (LLVM C++ standard library with C++11 support)

内容的提问来源于stack exchange，提问作者Devansh Nigam