_swiftoverride_class_getSuperclass libswiftCompatibility50.a

Unity摊

 Undefined symbols for architecture armv7:
   "_swiftoverride_class_getSuperclass(swift::TargetMetadata<swift::InProcess> const*)", referenced from:
       swift::swift50override_conformsToProtocol(swift::TargetMetadata<swift::InProcess> const*, 
swift::TargetProtocolDescriptor<swift::InProcess> const*, swift::TargetWitnessTable<swift::InProcess> 
const* (*)(swift::TargetMetadata<swift::InProcess> const*, 
swift::TargetProtocolDescriptor<swift::InProcess> const*)) in 
libswiftCompatibility50.a(ProtocolConformance.cpp.o)

环境: Unity2018.4.36f1 And Xcode12+ 编译
原因: Swift、OC 混编时需要配置Xcode Project, 使用xxxxx Bridging-Header.h

解决(Xcode配置):

1. Adding a new Swift file and a Brigde header:

1. File -> New -> File

   
   
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2. Select Swift File

   
   
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3. Confirm Create Bridging Header

   
   
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2.Go to Build Settings and set Always Embed Swift Standard Libraries to YES

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结果

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解决(Unity打包过程的话):

1. 将任一空的.swift文件放至Assets/Plugins/iOS目录下
2. 打包后处理增加:

    [PostProcessBuild(900)]
    public static void OnPostprocessBuild(BuildTarget target, string path)
    {
        PBXProject project = new PBXProject();
        string pbxProjectPath = PBXProject.GetPBXProjectPath(path);
        pbxProject.SetBuildProperty(targetGuid,"ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES", "YES");
     }