Apple Mach-O Linker Error for Objective C Bridging

Question

I'm trying to bridge an Objective-C file to Swift, and I've done everything outlined in this Apple tutorial: https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/BuildingCocoaApps/MixandMatch.html

Regardless, I go to run my app, and the build fails every time, complaining to me about a Mach-O Linker Error.

This is the exact error message:

 Undefined symbols for architecture x86_64:
   "_OBJC_CLASS_$_LeDiscovery", referenced from:
       objc-class-ref in LeDataService.o
 ld: symbol(s) not found for architecture x86_64
 clang: error: linker command failed with exit code 1 (use -v to see invocation)

check this: http://stackoverflow.com/questions/18933321/deleting-contents-from-xcode-derived-data-folder — Dharmesh Kheni, Jul 24 '15 at 04:56

score 0 · Answer 1 · answered Jul 23 '15 at 06:52

0

Try this

GO to your Target -> Select your project -> Build Settings

set Build Active Architectures Only to NO.

Hope it helps.

answered Jul 23 '15 at 06:52

Pradumna Patil

2,180
3
17
46

score 0 · Answer 2 · answered Jul 23 '15 at 09:34

0

Add arm64 to your valid architectures.

Target -> Build Settings -> Architectures -> Valid Architectures

my valid architectures are:

arm64 armv7 armv7s

answered Jul 23 '15 at 09:34

AliNadi

500
4
12

Apple Mach-O Linker Error for Objective C Bridging

2 Answers2