React Native从0.68升级到0.78后iOS构建报错：Undefined symbols _main

已严格遵循React Native Upgrade Helper的所有步骤将项目从0.68.6版本升级至0.78.0版本，yarn install与pod install均执行成功，但在Xcode中构建iOS项目时失败，报错信息如下：

ld: warning: ignoring duplicate libraries: '-lc++'
ld: warning: Could not find or use auto-linked framework 'CoreAudioTypes'
ld: Undefined symbols for architecture x86_64:
  "_main", referenced from:
    <initial-undefines>
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

猜测问题可能出在应用入口配置上（比如@main或AppDelegate.swift设置错误）。

环境信息 #

• macOS 14.7.1 (M3)
• Xcode 16.1
• CocoaPods 1.16.2
• Ruby 2.7.4p191

希望有过React Native大版本升级iOS构建问题排查经验的开发者提供帮助，如需更多配置细节可随时补充，感谢！

内容的提问来源于stack exchange，提问作者Pirun Seng