安装Google Maps SDK后iOS项目编译失败求助

问题描述 #

在集成Google Maps API过程中，已创建新项目并安装Google Maps pod，打开xcworkspace编译项目时出现以下链接错误：

Ld /Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Products/Debug-iphonesimulator/GoogleMapTest2.app/GoogleMapTest2 normal x86_64 (in target 'GoogleMapTest2' from project 'GoogleMapTest2')
    cd /Users/nxgen/Documents/GoogleMapTest2
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -target x86_64-apple-ios13.7-simulator -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator13.7.sdk -L/Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Products/Debug-iphonesimulator -F/Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Products/Debug-iphonesimulator -F/Users/nxgen/Documents/GoogleMapTest2/Pods/GoogleMaps/Base/Frameworks -F/Users/nxgen/Documents/GoogleMapTest2/Pods/GoogleMaps/Maps/Frameworks -filelist /Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Intermediates.noindex/GoogleMapTest2.build/Debug-iphonesimulator/GoogleMapTest2.build/Objects-normal/x86_64/GoogleMapTest2.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -Xlinker -rpath -Xlinker @executable_path/Frameworks -dead_strip -Xlinker -object_path_lto -Xlinker /Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Intermediates.noindex/GoogleMapTest2.build/Debug-iphonesimulator/GoogleMapTest2.build/Objects-normal/x86_64/GoogleMapTest2_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-link-runtime -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator -L/usr/lib/swift -Xlinker -add_ast_path -Xlinker /Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Intermediates.noindex/GoogleMapTest2.build/Debug-iphonesimulator/GoogleMapTest2.build/Objects-normal/x86_64/GoogleMapTest2.swiftmodule -ObjC -lc++ -lz -framework Accelerate -framework CoreData -framework CoreGraphics -framework CoreImage -framework CoreLocation -framework CoreTelephony -framework CoreText -framework GLKit -framework GoogleMaps -framework GoogleMapsBase -framework GoogleMapsCore -framework ImageIO -framework Metal -framework OpenGLES -framework QuartzCore -framework SystemConfiguration -framework UIKit -Xlinker -sectcreate -Xlinker __TEXT -Xlinker __entitlements -Xlinker /Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Intermediates.noindex/GoogleMapTest2.build/Debug-iphonesimulator/GoogleMapTest2.build/GoogleMapTest2.app-Simulated.xcent -framework Pods_GoogleMapTest2 -Xlinker -dependency_info -Xlinker /Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Intermediates.noindex/GoogleMapTest2.build/Debug-iphonesimulator/GoogleMapTest2.build/Objects-normal/x86_64/GoogleMapTest2_dependency_info.dat -o /Users/nxgen/Library/Developer/Xcode/DerivedData/GoogleMapTest2-dvqnpyvsumrrzbfpshbwaiyutzip/Build/Products/Debug-iphonesimulator/GoogleMapTest2.app/GoogleMapTest2

Undefined symbols for architecture x86_64:
  "_CTRadioAccessTechnologyNRNSA", referenced from:
      ___GMSCellNetworkTypeForRadioType_block_invoke in GoogleMaps
  "_CTRadioAccessTechnologyNR", referenced from:
      ___GMSCellNetworkTypeForRadioType_block_invoke in GoogleMaps
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Undefined symbol: _CTRadioAccessTechnologyNRNSA
Undefined symbol: _CTRadioAccessTechnologyNR

解决方案 #

这些未定义的符号属于CoreTelephony框架，但编译命令已包含该框架，问题核心是iOS版本兼容性：

• _CTRadioAccessTechnologyNR和_CTRadioAccessTechnologyNRNSA是iOS 14.0才引入的5G相关常量
• 当前使用的是iOS 13.7模拟器SDK，无法找到这些符号

可通过以下三种方法解决：

方法1：升级iOS SDK版本 #

• 打开Xcode，将项目的Deployment Target设置为iOS 14.0或更高版本
• 切换到iOS 14.0+的模拟器进行编译

方法2：调整链接器选项 #

若需保留iOS 13.7的部署目标，按以下步骤操作：

• 打开项目的Build Settings
• 搜索Other Linker Flags
• 添加-weak_framework CoreTelephony，告知链接器CoreTelephony为弱引用框架，缺失符号时不会触发报错

方法3：降级Google Maps SDK版本 #

若不想升级iOS版本，可降级到不依赖5G符号的Google Maps SDK版本：

• 修改Podfile，指定较低版本的Google Maps，例如：

  pod 'GoogleMaps', '~> 5.0'
  

• 执行pod install --repo-update更新依赖

内容的提问来源于stack exchange，提问作者Ali Ahmed