Xcode 12b3 Undefined symbol: __swift_FORCE_LOAD_$_swiftWebKit

Question

oe_jbondo OP

Created Jul ’20

Replies 9

Boosts 1

Views 32k

Participants 8

Using Xcode 12 beta 2 and beta 3 I'm getting the following linker error:

Code Block ld: warning: Could not find or use auto-linked library 'swiftWebKit'
Undefined symbols for architecture x86_64:
  "swift_FORCE_LOAD_$_swiftWebKit", referenced from:
      swift_FORCE_LOAD_$_swiftWebKit_$_Apex in DurationPicker.o
      swift_FORCE_LOAD_$_swiftWebKit_$_Apex in AlertRule.o
      swift_FORCE_LOAD_$_swiftWebKit_$_Apex in VideoExportCamerasTableViewHandler.o
      swift_FORCE_LOAD_$_swiftWebKit_$_Apex in CameraListCollectionViewCell.o
      swift_FORCE_LOAD_$_swiftWebKit_$_Apex in RecorderConnector.o
      swift_FORCE_LOAD_$_swiftWebKit_$_Apex in CameraListThumbnailCell.o
      swift_FORCE_LOAD_$_swiftWebKit_$_Apex in VideoExportDetailsViewController.o
      ...
     (maybe you meant: __swift_FORCE_LOAD_$_swiftWebKit_$_Apex)
ld: symbol(s) not found for architecture x86_64

The example is when building for the simulator, but I get the same error building for an arm device as well.

I don't get this error with Xcode 11. I'm guessing there's some framework I need to import or link (SwiftWebKit, it would seem), but I'm not sure why this is an issue with Xcode 12 and not with Xcode 11. I've tried linking the WebKit.framework and import WebKit in the mentioned files, but the error remains.

This is a mixed Obj-C / Swift project, and these are not the only Swift classes in the project. I have not been able to determine what's special about these particular files compared to the others in the project.

Anyone know what the problem is here and how to fix it?

Answered by oe_jbondo in 628980022

Figured this out. There is a new library in Xcode 12 that needs to be added to the Link Binary with Libraries phase call libSwiftWebKit.tbd. Error went away after adding this.

Unfortunately, adding this library breaks compilation with Xcode 11, so you'll have to add & remove it depending on which version of Xcode you're using.

👎

Boost

Answer 1

jonasdo OP

Jul ’20

Been seeing a similar issue and haven't been able to solve it. It seems similar to the previous issues from Xcode 11 beta, but none of those solutions seem to work:

https://developer.apple.com/forums/thread/120074?answerId=372345022#372345022

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Answer 2

jordanbondo OP

Jul ’20

Ok, yep tried that and a couple others linked to from that thread and none of them worked.

This one:
LD_VERIFY_BITCODE = NO

And this one:
LD_RUNTIME_SEARCH_PATHS = /usr/lib/swift $executable_path/Frameworks @loader_path/Frameworks

Neither of them did the trick. Someone also mentioned just adding a new, blank Swift file, but that doesn't work either.

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Answer 3

oe_jbondo OP

Aug ’20

Still seeing the same thing with Beta 4.

0

Answer 4

oe_jbondo OP

Aug ’20

Accepted Answer

Figured this out. There is a new library in Xcode 12 that needs to be added to the Link Binary with Libraries phase call libSwiftWebKit.tbd. Error went away after adding this.

Unfortunately, adding this library breaks compilation with Xcode 11, so you'll have to add & remove it depending on which version of Xcode you're using.

👎

14

Answer 5

mihai_l OP

Sep ’20

Adding and removing libSwiftWebKit.tbd to the "Link Binary with Libraries" phase added $(SDKROOT)/usr/lib/swift to LIBRARY_SEARCH_PATHS build setting and that fixed the error for me.

1

Answer 6

oe_jbondo OP

Sep ’20

I found another, simpler solution to this. Rather than adding libSwiftWebKit.tbd to your project, you can simple ensure that your LIBRARYSEARCHPATHS build setting has $(SDKROOT)/usr/lib/swift in it. Xcode will search that directory for libSwiftWebKit.tbd on its own during the build, eliminating the need for you to explicitly link it to your project, which also means it won't break backwards compatibility with Xcode 11.
🎉

7

Answer 7

haroldcrick OP

Mar ’21

Neither adding libSwiftWebKit.tbd or setting $(SDKROOT)/usr/lib/swift worked for me. Still looking for a fix.

1

Answer 8

amitojsingh95 OP

Oct ’22

I have added both but now m getting this error My Xcode Version is 14.0.1

error build: Building for Mac Catalyst, but linking in .tbd built for macOS, file '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk/usr/lib/swift/libswiftWebKit.tbd' for architecture arm64

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Answer 9

Rebin OP

Nov ’22

I am facing the same issue.

This appeared for me randomly! i was able to archive my project normally before and since then i didn't add any new libraries and stuff.

The project runs perfectly fine on my device but it doesn't archive for some reason...

This is the error heading i am receiving from the console: Undefined symbol: _$s10RealmSwift0A14CollectionImplPAAE12makeIteratorAA11RLMIteratorVy7ElementQzGyF

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