我查看了一个较旧的 iOS 项目，我有一段时间没有做任何事情，我需要更新扫描仪的 SDK，使其为 64 位。我将扫描仪套件的文件（拖放）添加到项目中，但现在当我构建时，我收到错误 undefined symbols for architecture armv7
它指的是arm64，但我尝试了几件事，现在它指的是armv7（设置其他链接器标志并编辑基本构建设置）。
我的构建设置是： 架构：标准 Base SDK 8.4 仅构建活动架构：否 有效架构：armv7 armv7s arm64
建筑的输出是：
ld /Users/meetingroom/Library/Developer/Xcode/DerivedData/xxx-apetpmawlnpfonginyycjwqagzuc/Build/Intermediates/xxx.build/Debug-iphoneos/xxx.build/Objects-normal/armv7/xxxx normal armv7 cd "/Users/meetingroom/ Documents/iOS Projects/xxx Project/xxx iOS8" export IPHONEOS_DEPLOYMENT_TARGET=8.0 export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents /Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.4。sdk -L/Users/meetingroom/Library/Developer/Xcode/DerivedData/xxx-apetpmawlnpfonginyycjwqagzuc/Build/Products/Debug-iphoneos -L/Users/meetingroom/Documents/iOS\Projects/xxx\Project/xxx\iOS8/xxx/ ScanAPI/lib -F/Users/meetingroom/Library/Developer/Xcode/DerivedData/xxx-apetpmawlnpfonginyycjwqagzuc/Build/Products/Debug-iphoneos -filelist/Users/meetingroom/Library/Developer/Xcode/DerivedData/xxx-apetpmawlnpfonginyycjwqagzuc/Build/中间件/xxx.build/Debug-iphoneos/xxx.build/Objects-normal/armv7/xxx.LinkFileList -dead_strip -fobjc-arc -fobjc-link-runtime -stdlib=libc++ -miphoneos-version-min=8.0 -framework AudioToolbox -框架外部附件-lsqlite3。0 -framework UIKit -framework Foundation -framework CoreGraphics -lScanApi -Xlinker -dependency_info -Xlinker /Users/meetingroom/Library/Developer/Xcode/DerivedData/xxx-apetpmawlnpfonginyycjwqagzuc/Build/Intermediates/xxx.build/Debug-iphoneos/xxx.build /Objects-normal/armv7/xxx_dependency_info.dat -o /Users/meetingroom/Library/Developer/Xcode/DerivedData/xxx-apetpmawlnpfonginyycjwqagzuc/Build/Intermediates/xxx.build/Debug-iphoneos/xxxx.build/Objects-normal/armv7 /xxx
架构 armv7 的未定义符号：“_AVMetadataObjectTypeUPCECode”，引用自：-[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) “_AVMetadataObjectTypeEAN8Code”，引用自：-[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_AVMetadataObjectTypeCode93Code"，引用自：-[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_AVMediaTypeVideo"，引用自：-[SoftScan initWithDelegate:] in libScanApi.a(SoftScanController.o) "_AVMetadataObjectTypeAztecCode"，引用自: -[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_AVMetadataObjectTypeEAN13Code"，引用自：-[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_AVLayerVideoGravityResizeAspectFill"，引用自：-[SoftScan start:] in libScanApi.a(SoftScanController.o) "_OBJC_CLASS_$_AVCaptureVideoPreviewLayer"，引用自：objc-class- ref in libScanApi.a(SoftScanController.o) "_AVMetadataObjectTypePDF417Code"，引用自：-[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_OBJC_CLASS_$_AVCaptureSession"，引用自：objc-class-ref in libScanApi.a (SoftScanController.o) "_AVMetadataObjectTypeCode39Code"，引用自：-[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_AVMetadataObjectTypeCode128Code"，引用自：-[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_AVMetadataObjectTypeQRCode"，引用自： -[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_OBJC_CLASS_$_AVCaptureMetadataOutput"，引用自：objc-class- ref in libScanApi.a(SoftScanController.o) "_AVMetadataObjectTypeCode39Mod43Code"，引用自：-[SoftScanController initWithDeviceObject:] in libScanApi.a(SoftScanController.o) "_OBJC_CLASS_$_AVCaptureDeviceInput"，引用自：objc-class-ref in libScanApi.a （SoftScanController.o）“_OBJC_CLASS_$_AVCaptureDevice”，引用自：libScanApi.a（SoftScanController.o）中的 objc-class-ref：未找到架构 armv7 clang 的符号：错误：链接器命令失败，退出代码为 1（使用 -v 查看调用）
唯一的错误与 SDK 有关，但我确认我已经安装了 64 位版本。提前致谢