How do I fix this? linker command failed with exit code 1 (use -v to see invocation)

Question

I am adding Vungle SDK to my objective C project and I keep getting this error which I cannot figure out

Does anybody have any clues on how to fix this issue?

I am also using Cocoa pods!

Thanks!

Did you add VungleSDK just before this error occured. Or did any other action related to the Xcode project happen before? — M_G, Aug 12 '16 at 19:56

score 1 · Answer 1 · answered Aug 12 '16 at 20:11

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You could use Cocoapods to add the SDK to your project. This way you do not have to worry about manual Xcode setup.

See https://support.vungle.com/hc/en-us/articles/204430550-Get-Started-with-Vungle-iOS-SDK

answered Aug 12 '16 at 20:11

M_G

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That's a fantastic point (and +1 to you for suggesting it), but I wonder if the O.P. is using Cocoapods (since it wasn't mentioned in the question) or knows what to do with it. – Michael Dautermann Aug 12 '16 at 20:16
Hey Guys thanks for the help. I am using cocoa pods and I am still having this issue! – SteveSmith Aug 12 '16 at 20:19
Just to be sure. Did you open the workspace or the project file? @MichaelDautermann Thanks – M_G Aug 12 '16 at 20:20
any other solutions? – SteveSmith Aug 12 '16 at 20:55
I set up a sample project with Vungle as single dependency via Cocoapods and the project build without problems. Lucky shot: Maybe you could remove the dependency, build and add it again afterwards. – M_G Aug 13 '16 at 18:46

Michael Dautermann · Answer 2 · 2016-08-12T21:20:08.267

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A couple things you need to do:

1) in the list of files in your Xcode project, click on the framework and makes sure it's included in your target. Like I've done with RNCryptor in my own project here: 2) Go to your Target's Build Phases and make sure your framework is included under "Link Binary With Libraries"

Separately, IF you are using Cocoapods:

1) make sure to do both a pod install and pod update (while the Xcode workspace is closed) and once that's done, reopen the workspace.

edited Aug 12 '16 at 21:20

answered Aug 12 '16 at 20:08

Michael Dautermann

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I tried doing it this way also and I still have the same problem – SteveSmith Aug 12 '16 at 20:39
it would have been nice if you had mentioned Cocopods in the original question. Can you edit your question to show the contents of your Podfile? – Michael Dautermann Aug 12 '16 at 21:20

score 0 · Answer 3 · answered Aug 13 '16 at 05:04

So many different problems for the same error message.(Linker command failed with exit code 1)

1) if you had two same constants in different classes then also this issue happens.

2) if you have accidentally imported a .m file instead of .h file in an implementation file.

3) This error can also be occurred if you have imported two different versions of same library ,in this case just remove the older version and keep only one version.

4) Adding the "other linker flags" in "Project" and not in "Targets". So, you move it to "Targets", it shouldn't be in "Project".

5) Check it out in

project->target->build settings-> search enable bitcode->set NO in DEBUG

check out this .. if it's OK then once do like following.

Menu > Product > Clean ... then Run the project

I think after deleting Derived data, cleaning and rebuilding will works fine. One more thing, you need to split code of AppDelegate and ViewController cause they have their own roles.

Hope it helps you.. :)

How do I fix this? linker command failed with exit code 1 (use -v to see invocation)

3 Answers3