podfile文件添加了一个use_frameworks!, 然后重新pod install, 项目就直接报错

解决方法如下
在podfile文件最后添加下面这段代码, 然后重新pod install

post_install do |installer|
    installer.pods_project.targets.each do |target|
      target.build_configurations.each do |config|
        config.build_settings["IPHONEOS_DEPLOYMENT_TARGET"] = "14.0"
      end
    end
  end

还有在真机运行报错时，需要添加：

post_install do |installer|
  installer.pods_project.build_configurations.each do |config|
    config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64"
  end
end

上面两个合起来处理

post_install do |installer|
  installer.pods_project.build_configurations.each do |config|
    config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64"
  end
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings["IPHONEOS_DEPLOYMENT_TARGET"] = "14.0"
    end
  end
end