ios XCode：架构 arm64 错误的未定义符号
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XCode: Undefined symbols for architecture arm64 error
提问by Joseph
In my XCode 5 project I use RestKit for REST communication. Everything works fine with the simulators, but generating the ipa file, I get the following error:
在我的 XCode 5 项目中，我使用 RestKit 进行 REST 通信。模拟器一切正常，但生成 ipa 文件时，出现以下错误：
ld: warning: ignoring file /Users/joseph/Library/Developer/Xcode/DerivedData/XXXXXXXXXX-gdwdekevxtdfivfpsnmyykeqhulk/Build/Products/Debug-iphoneos/libRestKit.a, missing required architecture arm64 in file /Users/joseph/Library/Developer/Xcode/DerivedData/XXXXXXXXXXXXX-gdwdekevxtdfivfpsnmyykeqhulk/Build/Products/Debug-iphoneos/libRestKit.a (2 slices)
Undefined symbols for architecture arm64:
"_OBJC_CLASS_$_RKRelationshipMapping", referenced from:
objc-class-ref in classname-xxx.o
"_OBJC_CLASS_$_RKObjectMapping", referenced from:
objc-class-ref in classname-xxx.o
"_OBJC_CLASS_$_RKRequestDescriptor", referenced from:
objc-class-ref in classname-xxx.o
"_OBJC_CLASS_$_RKObjectManager", referenced from:
objc-class-ref in classname-xxx.o
"_OBJC_CLASS_$_RKResponseDescriptor", referenced from:
objc-class-ref in classname-xxx.o
"_RKStatusCodeIndexSetForClass", referenced from:
-[classname-xxx classname-Method] in classname-xxx.o
-[classname-xxx classname-Method] in classname-xxx.o
-[classname-xxx classname-Method] in classname-xxx.o
-[classname-xxx classname-Method] in classname-xxx.o
-[classname-xxx classname-Method] in classname-xxx.o
"_RKMIMETypeJSON", referenced from:
-[classname-xxxinitWithURLBase:timeOut:] in classname-xxx.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation).
If in RestKit project, I change in "Build Settings" -> "Architectures" the "Standard architectures (ARMv7, armv7s)" by Standard architectures (including 64-bit) (ARMv7, armv7s, arm64) option, everything compiles fine . Is this correct?, Does not bring any result, I have to change some other settings.
如果在 RestKit 项目中，我通过标准体系结构（包括 64 位）（ARMv7、armv7s、arm64）选项在“构建设置”->“体系结构”中更改“标准体系结构（ARMv7，armv7s）”，则一切都可以正常编译。这是正确的吗？，没有带来任何结果，我必须更改一些其他设置。
回答by Js Lim
- Select Restkit project
- Set the Build Active Architecture Onlyto
No
- 选择 Restkit 项目
- 将仅构建活动架构设置为
No
回答by Refael.S
It just means you are building your project also for 64bit (iPhone 5s) and nothing to worry about, see this link for some more explanations: Xcode 5 and iOS 7: Architecture and Valid architectures
这只是意味着您正在为 64 位（iPhone 5s）构建您的项目，无需担心，请参阅此链接以获取更多解释： Xcode 5 和 iOS 7：架构和有效架构
回答by lukszar
Just change in RestKit project -> Build Settings -> Architectures to Standard Architecture (armv7, armv7s, arm64). After that everything should work.
只需将 RestKit 项目 -> 构建设置 -> 架构更改为标准架构（armv7、armv7s、arm64）。之后，一切都应该工作。
回答by keshav
I ran into the same/similar issue implementing AVPictureInPictureController and the issue was that I wasn't linking the AVKit framework in my project.
我在实现 AVPictureInPictureController 时遇到了相同/类似的问题，问题是我没有在我的项目中链接 AVKit 框架。
The error message was:
错误消息是：
Undefined symbols for architecture armv7:
架构 armv7 的未定义符号：
"_OBJC_CLASS_$_AVPictureInPictureController",
referenced from:
objc-class-ref in yourTarget.a(yourObject.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation) The Solution:
clang：错误：链接器命令失败，退出代码为 1（使用 -v 查看调用） 解决方案：
Go to your Project Select your Target Then, go to Build Phases Open Link Binary With Libraries Finally, just add + the AVKit framework / any other framework. Hopefully this helps someone else running into a similar issue I had.
转到您的项目 选择您的目标 然后，转到 Build Phases Open Link Binary With Libraries 最后，只需添加 + AVKit 框架/任何其他框架。希望这可以帮助其他人遇到我遇到的类似问题。
回答by Shashank Saxena
This worked for me:
这对我有用：
ios sdk 9.3
IOS SDK 9.3
into your build setting of app.xcodeproj valid architecture: armv7 armv7s Build Active architecture : No
进入 app.xcodeproj 的构建设置有效架构：armv7 armv7s 构建活动架构：否
Clean and build , worked for me.
清洁和建造，为我工作。
回答by Arvind Kumar
In my case i forgot to add sqlite library in my project. After adding library from Linked framework and library the build was successful.
就我而言，我忘记在我的项目中添加 sqlite 库。从链接框架和库添加库后，构建成功。
