体系结构的未定义符号 x86_64：“_OBJC_METACLASS_$_GMVDetector”引用自：TextDetector

Question

我在没有 cocoapods 的情况下将 Google Firebase MLKit 添加到我的项目中。当我尝试构建时，出现 Undefined symbol 错误：Xcode error image

Undefined symbols for architecture armv7:
  "_OBJC_METACLASS_$_GMVDetector", referenced from:
      l45918 in TextDetector
  "_OBJC_CLASS_$_GMVDetector", referenced from:
      l45917 in TextDetector
  "_OBJC_CLASS_$_GMVFeature", referenced from:
      _OBJC_CLASS_$_GMVTextBlockFeature in TextDetector
      _OBJC_CLASS_$_GMVTextLineFeature in TextDetector
      _OBJC_CLASS_$_GMVTextElementFeature in TextDetector
  "_OBJC_METACLASS_$_GMVFeature", referenced from:
      l45914 in TextDetector
      l45915 in TextDetector
      l45916 in TextDetector
  "_OBJC_CLASS_$_GMVUtility", referenced from:
      objc-class-ref in TextDetector
  "_OBJC_CLASS_$_GMVLogger", referenced from:
      objc-class-ref in TextDetector
  "_GMVFeatureTypeTextLine", referenced from:
      l31298 in TextDetector
  "_GMVDetectorImageOrientation", referenced from:
      l31341 in TextDetector
      l31342 in TextDetector
  "_GMVFeatureTypeTextElement", referenced from:
      l31313 in TextDetector
  "_GMVFeatureTypeTextBlock", referenced from:
      l31279 in TextDetector
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

到目前为止我已经试过了：

退出 Xcode 然后清理构建
手动和拖放框架
链接了所有需要的资源文件夹
正在删除 Xcode 个临时文件
将 Build Settings 下的 symbols hidden by default 设置为 No 尽管框架 TextDetector 链接到正确的目标。

所有这些似乎都不起作用。我按照 Integrate without CocoaPods 进行了框架设置。

Project Structure Image and Architecture in Build Settings

Answer 1

已解决。我在上面提到的 Firebase link 中添加了所有其他框架，这些框架与 .zip 文件一起出现。 List of Frameworks。这不是一个简单的设置，readme 和网站中均未提及。可能所有这些框架都不是必需的，但许多是相互依赖的，因为它们在每个框架的 module.modulemap 中指定。

体系结构的未定义符号 x86_64：“_OBJC_METACLASS_$_GMVDetector”引用自：TextDetector

Undefined symbols for architecture x86_64: "_OBJC_METACLASS_$_GMVDetector" referenced from: TextDetector

ios

xcode

xcode9

google-vision

google-ios-vision