Xcode10.2, swift5.0

Undefined symbols for architecture x86_64: "_swift_getFieldAt", referenced from: HandyJSON.Metadata.Class._propertyDescriptionsAndStartPoint() -> ([HandyJSON.Property.Description], Swift.Int32?)? in Metadata.o HandyJSON.Metadata.Struct.propertyDescriptions() -> [HandyJSON.Property.Description]? in Metadata.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

更改 podfile

pod 'HandyJSON', '5.0.0-beta'

如果不行的话 更新本地cocoapods的spec资源配置信息。

pod repo update