Facebook-sdk-for-unity: 7.17.0 caused duplicate AudienceNwtwork

in 7.17.1 version, the issue still exists

Starting from 7.17.0, we use cocoapods to pull FB iOS SDK for unity sdk, you might need to delete FB iOS SDK that imported by old unity SDK, could you try deleting all frameworks from Assets/FacebookSDK/Plugins/iOS?

i deleted Assets/FacebookSDK/Plugins/iOS directory, the issue still exist

@realluhui could you share a test project or the Podfile of generated project with us?

I get the exact same error after updating the facebook sdk from 7.12.1 to 7.16.1...

@dreamolight it's my test project url https://github.com/realluhui/test_facebook
unity version is 2018.4.0f1
facebook version is 7.17.1
audiencenetwork is 5.2.0
it export xcode project success, when compile use xcode, it show error

dreamolight

@realluhui could you share a test project or the Podfile of generated project with us?

Here is my generated POD file:

source 'https://github.com/CocoaPods/Specs.git'
source 'https://github.com/CocoaPods/Specs'
platform :ios, '10.0'

target 'Unity-iPhone' do
pod 'Bolts', '~> 1.7'
pod 'FBSDKCoreKit', '~> 5.2'
pod 'FBSDKLoginKit', '~> 5.2'
pod 'FBSDKShareKit', '~> 5.2'
pod 'Google-Mobile-Ads-SDK', '~> 7.42.1'
end

Assets/FacebookSDK/Plugins/iOS - is empty.
Facebook SDK 7.17.1, Audience 5.4.1. The realluhui's error is still here while compiling by Xcode

@Apoll0 could you check whether there is multiple FBSDKCoreKit.framework in the generated project? It'd be great if you can share a screenshot of files of the generated project on Xcode.

Also, @realluhui and @Apoll0 , how did you integrate with audience network SDK? If you integrate audience network manually, you don't need to drag FBSDKCoreKit.framework file into the project as facebook unity sdk has it already.

@dreamolight

i just find FBSDKCoreKit.framework in Pods Directory

Live here, we are encounting with the same issue!

Audience network and FB sdk ware integrated by unitypackage from the Facebook developer site. Then export to Xcode, build - error. Nothing was added manually. A month or two ago everything was ok, but after upgrading FBSDK & Audience SDK error have appeared.

I am wondering will deleting the FBAudienceNetwork.frame from lib folder of Unity Project and add it to cocoapods helps? But we don't know which iOS native lib version of FAN for Unity v5.4.1 is using, because the latest native version on cocopods seems to only be 5.3.1?

the above trying got no luck ...

Having exactly the same issue right now. We created packages for the new Unity package system, and depending on the solution, this conflict might create some weird dependencies between our facebook packages.

Facebook 7.17.1 and FAN 5.2.0

Tested today:
new Facebook SDK 7.17.2 + old FAN 5.2 - Working! (don't forget Xcode linker flag -lxml2)
new Facebook SDK 7.17.2 + new FAN 5.4.1 - new error, can't fix

So, stopped at 7.17.2 + 5.2

Thanks for your feedback @Apoll0 , but we are looking for a major bug fix claimed to be shipped with version 5.4.1, So we are counting on FB guys fix this right ASAP.

Updated to 7.17.2 and it worked as well. Thanks @Apoll0 !

@RicardoBusta
Tested today:
new Facebook SDK 7.17.2 + new FAN 5.4.1 do not work.

"ld: warning: arm64 function not 4-byte aligned: _unwind_tester from /Users/dev/Desktop/test-fb/Libraries/libiPhone-lib.a(unwind_test_arm64.o)
ld: Linking globals named 'fbad_Cocos2DGetGLViewController': symbol multiply defined! for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)"

@armnotstrong try using FAN 5.2 + SDK 7.17.2
Worked for iOS and Android here.

@RicardoBusta
Tested today:
new Facebook SDK 7.17.2 + new FAN 5.4.1 do not work.

"ld: warning: arm64 function not 4-byte aligned: _unwind_tester from /Users/dev/Desktop/test-fb/Libraries/libiPhone-lib.a(unwind_test_arm64.o)
ld: Linking globals named 'fbad_Cocos2DGetGLViewController': symbol multiply defined! for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)"

same problem here.

@RicardoBusta I need upgrade to Audience network to 5.4.1 ,becouse the new version fix some serious bug .

Any updates here? I'm getting the same duplicate symbol errors with FB 7.16.1 and FBAN 5.4.1. Trying now to upgrade to 7.17.2.

Nope, that still has 1 duplicate (they were like 8 before, so an improvement). I guess I'll have to downgrade to 5.2, but I can't find where to download older versions. Can someone point to it?

Nope, that still has 1 duplicate (they were like 8 before, so an improvement). I guess I'll have to downgrade to 5.2, but I can't find where to download older versions. Can someone point to it?

https://origincache.facebook.com/developers/resources/?id=audience-network-unity-sdk-5.2.0.zip

Thanks @luizjunior

@RicardoBusta
Tested today:
new Facebook SDK 7.17.2 + new FAN 5.4.1 do not work.
"ld: warning: arm64 function not 4-byte aligned: _unwind_tester from /Users/dev/Desktop/test-fb/Libraries/libiPhone-lib.a(unwind_test_arm64.o)
ld: Linking globals named 'fbad_Cocos2DGetGLViewController': symbol multiply defined! for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)"

same problem here.

We're getting the same error.

FAN 5.2 causes a duplicate error with AdMob on Android whereas FAN 5.4.1 causes a duplicate error on iOS. It's very frustrating. Could we have an update on this issue?

Any updates here?

any news ? ? ? ? anyone ? anywhere ? :D

Anyone got fix? I got same issue when I upgrade from 5.2.0 to 5.4.1 today.

I'm using only Facebook Audience Network 5.4.1.
same problem is occured in xcode.

I guess Facebook SDK is not reason because I'm don't import Facebook SDK yet.

Please fix this issue!!

My Unity version is 2019.1.14f

We're getting the same error.
new Facebook SDK 7.17.2 + new FAN 5.4.1 do not work.

any updates?

Same error.

I have tested on a simple unity project with only Facebook Audience Network SDK 5.4.1.
The error occured only when linking with -ObjC flag.

Facebook SDK 7.17.2 is autiomatically adding this flag to xcode project( in PostProcess step).
That's why the combinaison of FB Sdk and FAN Sdk trigger this error.
(So a workaround is to remove -ObjC flag but this may lead to other problems ? )

#

@FACEBOOK-TEAM could you please fix Audience Network SDK (FBAdBridgeCommon.mm) to be complient with -ObjC flag

#

Thank you

I wonder if it would be possible to remove the wrapped iOS framework in the FAN Unity 5.4.1 SDK? My project is using App Lovin as a mediator which creates a Dependencies.xml file:

<?xml version="1.0" encoding="utf-8"?>
<dependencies>
    <androidPackages>
        <androidPackage spec="com.applovin.mediation:facebook-adapter:5.5.0.0" />
        <androidPackage spec="com.android.support:recyclerview-v7:28.+" />
        <androidPackage spec="com.android.support:appcompat-v7:28.+" />
    </androidPackages>
    <iosPods>
        <iosPod name="AppLovinMediationFacebookAdapter" version="5.5.0.0" />
    </iosPods>
</dependencies>

This file is used by https://github.com/googlesamples/unity-jar-resolver to add Cocoapods dependencies at build time.
Using this method my project successfully builds and runs with FB Unity sdk 17.7.2 + FAN native iOS 5.5.0.

Any findings???

the problem come from AudienceNetworkSdk which failed to link when using -ObjC flag.
i have open a bug on facebook developer but still waiting to be resolved: https://developers.facebook.com/support/bugs/508036486408059/

( a dirty workaround is to remove this linker flag under xcode (facebook sdk is adding it in post processing steps)

It didn't resolve my case, I am still having this issue

On Tue, Sep 17, 2019 at 8:45 PM tbredon notifications@github.com wrote:

the problem come from AudienceNetworkSdk which failed to link when using
-ObjC flag.
i have open a bug on facebook developer but still waiting to be resolved:
https://developers.facebook.com/support/bugs/508036486408059/

( a dirty workaround is to remove this linker flag under xcode (facebook
sdk is adding it in post processing steps)

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Can you guide me how to resolve it...

On Wed, Sep 18, 2019 at 12:00 PM Umair Hassan umairh2018@gmail.com wrote:

It didn't resolve my case, I am still having this issue

On Tue, Sep 17, 2019 at 8:45 PM tbredon notifications@github.com wrote:

the problem come from AudienceNetworkSdk which failed to link when using
-ObjC flag.
i have open a bug on facebook developer but still waiting to be resolved:
https://developers.facebook.com/support/bugs/508036486408059/

( a dirty workaround is to remove this linker flag under xcode (facebook
sdk is adding it in post processing steps)

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Also happens with FAN 5.5.
I can remove the Objc flag, but won't it cause other problems?

the problem come from AudienceNetworkSdk which failed to link when using -ObjC flag.
i have open a bug on facebook developer but still waiting to be resolved: https://developers.facebook.com/support/bugs/508036486408059/

( a dirty workaround is to remove this linker flag under xcode (facebook sdk is adding it in post processing steps)

From where you delete the obj c .

On Mon, 23 Sep 2019, 11:49 am dsagi-presspo, notifications@github.com
wrote:

Also happens with FAN 5.5.
I can remove the Objc flag, but won't it cause other problems?

the problem come from AudienceNetworkSdk which failed to link when using
-ObjC flag.
i have open a bug on facebook developer but still waiting to be resolved:
https://developers.facebook.com/support/bugs/508036486408059/

( a dirty workaround is to remove this linker flag under xcode (facebook
sdk is adding it in post processing steps)

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Yes. Its causing other issues like fbsdk not present. Something like that

On Mon, 23 Sep 2019, 5:17 pm Umair Hassan, umairh2018@gmail.com wrote:

From where you delete the obj c .

On Mon, 23 Sep 2019, 11:49 am dsagi-presspo, notifications@github.com
wrote:

Also happens with FAN 5.5.
I can remove the Objc flag, but won't it cause other problems?

the problem come from AudienceNetworkSdk which failed to link when using
-ObjC flag.
i have open a bug on facebook developer but still waiting to be resolved:
https://developers.facebook.com/support/bugs/508036486408059/

( a dirty workaround is to remove this linker flag under xcode (facebook
sdk is adding it in post processing steps)

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For those that have frameworks requiring static linking, but where -ObjC isn't an option due to the Facebook glitch, I found that it can help to use -force_load as mentioned here:

https://stackoverflow.com/questions/31580245/how-to-link-the-library-with-force-load-in-xcode

For those that have frameworks requiring static linking, but where -ObjC isn't an option due to the Facebook glitch, I found that it can help to use -force_load as mentioned here:

https://stackoverflow.com/questions/31580245/how-to-link-the-library-with-force-load-in-xcode

Its not working for me. I have this error with AdMob and Facebook audience network
Linking globals named 'fbad_Cocos2DGetGLViewController': symbol multiply defined! for architecture arm64

Same issue with me...

On Mon, Sep 30, 2019 at 12:28 PM asadmehar notifications@github.com wrote:

For those that have frameworks requiring static linking, but where -ObjC
isn't an option due to the Facebook glitch, I found that it can help to use
-force_load as mentioned here:

https://stackoverflow.com/questions/31580245/how-to-link-the-library-with-force-load-in-xcode

Its not working for me. I have this error with AdMob and Facebook audience
network
Linking globals named 'fbad_Cocos2DGetGLViewController': symbol multiply
defined! for architecture arm64

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I created an empty Unity project. I did nothing else than switched to iOS platform, imported FB Unity SDK 7.17.2 and FB Audience Network Unity SDK 5.5.1 and I get the same error while building:
Linking globals named 'fbad_Cocos2DGetGLViewController': symbol multiply defined! for architecture arm64

There are instructions here on managing the conflict, has anyone tried it?
https://developers.facebook.com/docs/audience-network/changelog-unity#5_4_1

the funny fact :) i posted this problem on 18 of august and still they manage to push 2-3 updates and dont even look at bug-crash coments and issue :) thumbs up for idiots at SDK Team 👍

Any news on this disaster?

No update. still facing the issue...

On Fri, Nov 1, 2019 at 1:08 PM Kuba notifications@github.com wrote:

Any news on this disaster?

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Still

Hi all, FB AN SDK v5.6.0 is released and it's using Cocoapods/Maven to pull the latest SDK as FB Unity SDK, it should work with FB Unity SDK v7.18.0 now. I suggest reporting a bug in https://developers.facebook.com/bugs/ so that we can react more quickly. Close the issue, feel free to open the issue if the problem still exists.

Issues when build with FAN 5.6.0, the SDK added to Podfile, Already did pod install, but can't build.

I can fix it by close Unity, then remove Library folder from my project folder then open Unity and build it, now all errors gone.

I'm now unable to build for Android. It seems that the iOS build and run works fine.

Using Android Resolver adds the new dependencies:

<androidPackage spec="com.android.support:support-annotations:28.0.0" />
<androidPackage spec="com.facebook.android:audience-network-sdk:5.6+" />

I first suspected the support dependency, since I am using "Use Jetifier" option. Removing it didn't help. I tried removing the fan dependency (just for testing, I knew this isn't the right way) and the build succeeded. However (and like expected), the app crashed while running.
Not sure how to continue from here.

Here are the messages I get, I can't see any helpful info:
Execution failed for task ':transformClassesWithMultidexlistForDebug'.
com.android.build.api.transform.TransformException: Error while generating the main dex list.

exit code: 1
UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.Command.Run (System.String command, System.String args, System.String workingdir, UnityEditor.Android.Command+WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.AndroidJavaTools.RunJava (System.String args, System.String workingdir, System.Action1[T] progress, System.String error) (at <563f4bbc342a4b6b88ae70c46cea610c>:0) UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action1[T] progress) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
Rethrow as GradleInvokationException: Gradle build failed
UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1[T] progress) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.PostProcessor.Tasks.BuildGradleProject.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
Rethrow as BuildFailedException: Exception of type 'UnityEditor.Build.BuildFailedException' was thrown.
UnityEditor.Android.PostProcessor.CancelPostProcess.AbortBuild (System.String title, System.String message, System.Exception ex) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.PostProcessAndroidPlayer.PostProcess (UnityEditor.BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:281)
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()

I can fix it by close Unity, then remove Library folder from my project folder then open Unity and build it, now all errors gone.

Thank you! This worked for me after trying a large number of other suggestions online and losing way too much time on this. For the record, I'm using Unity 2019.3.10f1, Facebook SDK 17.7.2, and I don't think it matters but Xcode 11.4.1.