Firebase pod 为架构 arm64 生成重复符号

Question

我需要帮助来解决我的重复符号错误。它在使用 CocoaPods 安装 Firebase Analytics 后开始。

重复符号全部（34）在：/Library/Developer/Xcode/DerivedData/appName/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/nanopb.build/Objects-normal/arm64/

pb_common 2.o; pb_common.o; pb_encode 2.o; pb_encode.o; pb_decode 2.o 和 pb_decode.o

更新到 Xcode 11.2 并安装 Firebase 6.10.0（原为 6.11.0）后，GoogleUtilities 中出现了 5 个其他重复符号错误：

duplicate symbol '_OBJC_CLASS_$_GULAppEnvironmentUtil' in:
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULAppEnvironmentUtil 3.o
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULAppEnvironmentUtil.o

duplicate symbol '_OBJC_METACLASS_$_GULAppEnvironmentUtil' in:
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULAppEnvironmentUtil 3.o
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULAppEnvironmentUtil.o

duplicate symbol '_GULNSDataZlibRemainingBytesKey' in:
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULNSData+zlib 2.o
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULNSData+zlib.o

duplicate symbol '_GULNSDataZlibErrorKey' in:
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULNSData+zlib 2.o
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULNSData+zlib.o

duplicate symbol '_GULNSDataZlibErrorDomain' in:
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULNSData+zlib 2.o
/Users/abnormalsolutions/Library/Developer/Xcode/DerivedData/infood-agjvxotmgtevwrbdluxflosleqao/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/GoogleUtilities.build/Objects-normal/arm64/GULNSData+zlib.o

ld: 5 duplicate symbols for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation).

我在 SO 上看到了其他重复的符号问题并尝试了一些建议，但我不敢尝试太多。删除派生数据无济于事。我还尝试从构建设置下的其他链接器标志中删除 -Objc 链接器标志，如 SO 上的建议。也没有帮助。

我现在又回到了 Firebase 6.11.0。这是我的 Firebase pod：

pod 'Firebase/Core'
pod 'Firebase/Auth'
pod 'Firebase/Database'
pod 'Firebase/Messaging'
pod 'Firebase/AdMob'

请告诉我是否需要发布更多详细信息。我真的不知道如何处理这个！

Answer 1

好的，所以我遇到了一个解决方案。

pod deintegrate
pod install