error: linker command failed - Unity 2017.3.0f3 + Unity Ads 2.2.0

Hi to all,

I have issue with iOS build + Unity Ads package, when I try to build very simple test application of Unity Ads with Xcode I'm always getting these linker error:

Code (csharp):

1.  
2. duplicate symbol _UnityAdsCopyString in:
3.  
4.     /Users/petak/Library/Developer/Xcode/DerivedData/Unity-iPhone-aflmhnsuschfxpenpatmdnypjbax/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/Unity-iPhone.build/Objects-normal/arm64/UnityAdsUnityWrapper-6D362980BD529555.o
5.  
6.     /Users/petak/Library/Developer/Xcode/DerivedData/Unity-iPhone-aflmhnsuschfxpenpatmdnypjbax/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/Unity-iPhone.build/Objects-normal/arm64/UnityAdsUnityWrapper-5A58B2CEE8B214AA.o
7.  
8. duplicate symbol _OBJC_CLASS_$_UnityAdsUnityWrapperDelegate in:
9.  
10.     /Users/petak/Library/Developer/Xcode/DerivedData/Unity-iPhone-aflmhnsuschfxpenpatmdnypjbax/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/Unity-iPhone.build/Objects-normal/arm64/UnityAdsUnityWrapper-6D362980BD529555.o
11.  
12.     /Users/petak/Library/Developer/Xcode/DerivedData/Unity-iPhone-aflmhnsuschfxpenpatmdnypjbax/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/Unity-iPhone.build/Objects-normal/arm64/UnityAdsUnityWrapper-5A58B2CEE8B214AA.o
13.  
14. duplicate symbol _OBJC_METACLASS_$_UnityAdsUnityWrapperDelegate in:
15.  
16.     /Users/petak/Library/Developer/Xcode/DerivedData/Unity-iPhone-aflmhnsuschfxpenpatmdnypjbax/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/Unity-iPhone.build/Objects-normal/arm64/UnityAdsUnityWrapper-6D362980BD529555.o
17.  
18.     /Users/petak/Library/Developer/Xcode/DerivedData/Unity-iPhone-aflmhnsuschfxpenpatmdnypjbax/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/Unity-iPhone.build/Objects-normal/arm64/UnityAdsUnityWrapper-5A58B2CEE8B214AA.o
19.  
20. ld: 3 duplicate symbols for architecture arm64
21.  

I'm using Unity 2017.3.0f3 + Unity Ads 2.2.0 + Xcode 9.2.
Do you have any ideas how to solved this error ?

Thank you for any tips or advice.

 

Hi,

Alternatively try to clean Library and obj folders for your project. We have our own example game released on App Store using almost identical setup: 2017.3.1f1, Ads SDK 2.2.0 and Xcode 9.2

So have tested and verified an almost similar configuration as yours.

Let us know if you still need help. You can also see if you can repro using our example project at https://github.com/Unity-Technologies/unity-ads-assetstore-test

/Rasmus

 

Hi mikaisomma,

thank you for your quick and correct answer, after I tried disable Unity Ads from Unity Editor Services Panel, my Xcode Test project doesn't have any build linker error.

So thank you so much! And sorry for my late answer.

Ps.: I make my own fix with Editor API and Xcode API, which is great for future...
https://bitbucket.org/Unity-Technologies/xcodeapi

but your solution is so sharp and clean ;-)

Code (csharp):

1.  
2. using System.IO;
3. using UnityEditor;
4. using UnityEditor.Callbacks;
5. using UnityEditor.iOS.Xcode;
6. using UnityEngine;
7.  
8. public static class RemoveUnityAdsXcode
9. {
10.    [PostProcessBuild]
11.    public static void OnPostprocessBuild(BuildTarget buildTarget, string path)
12.    {
13.       if (buildTarget != BuildTarget.iOS)
14.          return;
15.  
16.      
17.       string[] filesToRemove = {
18.          "Classes/UnityAds/UnityAdsUnityWrapper.mm"
19.       };
20.  
21.       string pbxprojPath = path + "/Unity-iPhone.xcodeproj/project.pbxproj";
22.       PBXProject proj = new PBXProject();
23.       proj.ReadFromString(File.ReadAllText(pbxprojPath));
24.  
25.       foreach(string name in filesToRemove)
26.       {
27.          string fileGuid = proj.FindFileGuidByProjectPath(name);
28.          if (fileGuid != null)
29.          {
30.             Debug.Log ("Removing " + name + " from xcode project");
31.             proj.RemoveFile(fileGuid);
32.          }
33.       }
34.  
35.       File.WriteAllText(pbxprojPath, proj.WriteToString());
36.    }
37. }
38.  
39.  

 

So how do we get Unity ads to run properly if it's dissabled in Services, do we delete the assets? Thank you very much, I have the same problem