“用于架构arm64的未定义符号"；使用Firebase C ++ SDK时 [英] "Undefined symbols for architecture arm64" when using Firebase C++ sdk

问题描述

我下载了Firebase C ++ SDK，2016年6月10日.我将sdk添加到我的iOS项目中，将-objc设置为其他链接器标志.而且我有一个链接器错误请咨询.

I downloaded the firebase c++ sdk, 10 jun 2016. I added the sdk into my iOS project, set the -objc into the other linker flags. And i got a linker error PLease advice.

错误日志如下:

Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$_FIRApp", referenced from:
      objc-class-ref in libapp.a(app_ios_efc96a6f6f98f7443dddf841f7396489.o)
  "_OBJC_CLASS_$_FIROptions", referenced from:
      objc-class-ref in libapp.a(app_ios_efc96a6f6f98f7443dddf841f7396489.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

(编辑1)框架搜索路径:

(EDIT 1) Framework search path:

 $(PROJECT_DIR)/ios/Libs/Firebase

firebase位于文件夹中，并且包含和.a库.

The firebase is in the folder and the includes and the .a libraries.

推荐答案

当我遇到相同的错误时，我的问题是我没有在C ++库中包含iOS SDK.我没有意识到iOS SDK上的C ++库DEPENDS.

My problem when I got the same error was that I did not include the iOS SDK along with the C++ library. I did not realize that the C++ library DEPENDS on iOS SDK.

我认为C ++库是一个全新的代码库，为跨平台开发提供了潜力.但是，您仍然只限于iOS或Android，但可以选择使用C ++进行编码，以便可以在iOS和Android中重用C ++代码.

I thought that the the C++ library is a whole new code base that provides the potential for cross-platform development. However, you are still bound to only iOS or Android, but you can choose to code in C++ so you could reuse the C++ code in iOS and Android.

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