Xcode: Undefined symbols for architecture arm64 error

Question

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:

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.

Answer 1

1. Select Restkit project
2. Set the Build Active Architecture Only to No

Answer 2

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

Answer 3

Just change in RestKit project -> Build Settings -> Architectures to Standard Architecture (armv7, armv7s, arm64). After that everything should work.

Answer 4

This worked for me:

ios sdk 9.3

into your build setting of app.xcodeproj valid architecture: armv7 armv7s Build Active architecture : No

Clean and build , worked for me.

Answer 5

In my case i forgot to add sqlite library in my project. After adding library from Linked framework and library the build was successful.

Answer 6

I ran into the same/similar issue implementing AVPictureInPictureController and the issue was that I wasn't linking the AVKit framework in my project.

The error message was:

Undefined symbols for architecture armv7:

"_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:

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.