在 iOS Flutter 中构建发布时出现此错误

Question

在 Xcode 中构建/归档此项目时出现此错误。 （颤抖）

ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/FirebaseCore'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/GTMSessionFetcher'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/GoogleAPIClientForREST'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/GoogleToolboxForMac'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/Protobuf'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/firebase_ml_vision'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/flutter_native_image'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/image_picker'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/nanopb'
ld: warning: directory not found for option '-L/Users/gurleensethi/FlutterProjects/camera_ml/build/ios/Debug-iphoneos/path_provider'
ld: library not found for -lFirebaseCore
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

我遇到了类似的问题，对我来说，问题是由在 XCode 中打开 Runner.xcodeproj 而不是 Runner.xcodeworkspace 引起的。对于使用 XCode 的人来说，这似乎很明显，但也许这会在某个时候对某人有所帮助。

Answer 2

您似乎缺少库尝试：

1. flutter clean
2. flutter build ios

Answer 3

我花了几个小时试图修复未找到的库上的类似错误。最终这就是我能够解决它的方法

1. 在开始使用 Xcode Archive 之前，使用 Flutter 构建 iOS
2. 将 IOS 部署目标更改为更高的目标 iOS 11.2。早些时候我有类似 8.0 的东西，它给出了上述所有错误。
3. 确保 Xcode 中的 IOS 部署目标在 Project、Target 和 Pod 中相同