ld：警告：找不到自动链接库“swiftObjectiveC”

Question

我正在开发一个用 obj-c 编写的遗留项目（iOS 应用程序）。该项目与用 obj-c 编写的遗留静态库链接。

该库使用 Swift 编写的代码进行了扩展，并且构建时没有错误。

问题出在项目级别，构建时出现以下错误：

ld: warning: Could not find auto-linked library 'swiftObjectiveC'
ld: warning: Could not find auto-linked library 'swiftSwiftOnoneSupport'
ld: warning: Could not find auto-linked library 'swiftCoreAudio'
ld: warning: Could not find auto-linked library 'swiftCoreGraphics'
ld: warning: Could not find auto-linked library 'swiftCore'
ld: warning: Could not find auto-linked library 'swiftQuartzCore'
ld: warning: Could not find auto-linked library 'swiftDarwin'
ld: warning: Could not find auto-linked library 'swiftsimd'
ld: warning: Could not find auto-linked library 'swiftFoundation'
ld: warning: Could not find auto-linked library 'swiftAVFoundation'
ld: warning: Could not find auto-linked library 'swiftCoreMedia'
ld: warning: Could not find auto-linked library 'swiftDispatch'
ld: warning: Could not find auto-linked library 'swiftCoreFoundation'
Undefined symbols for architecture x86_64:
  "protocol descriptor for Swift.Hashable", referenced from:
      protocol conformance descriptor for __C.AVAudioSessionCategory : Swift.Hashable in __C_Synthesized in libFindParking.a(libFindParking.a-x86_64-master.o)
      generic protocol witness table for __C.AVAudioSessionCategory : Swift.Hashable in __C_Synthesized in libFindParking.a(libFindParking.a-x86_64-master.o)
      protocol conformance descriptor for __C.AVAudioSessionMode : Swift.Hashable in __C_Synthesized in libFindParking.a(libFindParking.a-x86_64-master.o)
      generic protocol witness table for __C.AVAudioSessionMode : Swift.Hashable in __C_Synthesized in libFindParking.a(libFindParking.a-x86_64-master.o)

• 如何解决问题？

更新：

我没有使用 Cocoapods

Answer 1

这是一个对我有用的解决方案：

显然，对于纯 Objective-c 项目，您需要将此 $(TOOLCHAIN_DIR)/usr/lib/swift/$(PLATFORM_NAME) 添加到目标的库搜索路径中。当我将一个用swift编写的库包含在objective-c中的项目中时，这对我有用

https://stackoverflow.com/a/53101587/1180728