[Bug] Undefined Symbols / absl: Its_20220623::variant_internal::ThrowBadVariantAccess() Error about firebase-unity-sdk

[a-maurice]

Hey all,

So the issue is that the Firestore Unity SDK depends on a specific version of the Firestore iOS SDK, and it is incorrectly pulling in the wrong version of FirebaseFirestoreInternal (which contains an update to gRPC/absl, which is why it is getting undefined symbols in those libraries).

So, for a workaround what you can do is either:
In the Podfile generated by Unity, add the line:
pod 'FirebaseFirestoreInternal', '10.22.0'
alongside the other pods that are listed.

Or, in the Unity project, if you imported via the unityPackage, you should have a file at Assets/Firebase/Editor/FirestoreDependencies.xml
In that file add the following line below the Firebase/Firestore one:
<iosPod name="FirebaseFirestoreInternal" version="10.22.0" minTargetSdk="8.0"></iosPod>
That should result in the Podfile generating the same line mentioned in the first workaround.

Finally, if you imported the library via a package manager such that it is under Packages, what you can do is create the FirestoreDependencies.xml file mentioned above yourself, and just set that line above as the only pod. That should then get included in the set of Dependencies.xml files, and get added to the generated Podfile.

[a-maurice]

Alright, we have a new release out that should help address this: https://github.com/firebase/firebase-unity-sdk/releases/tag/v11.8.1

Note that this release is assuming that it be pulling in:
Firebase/Firestore @ 10.22.0
FirebaseFirestoreInternal @ 10.23.0

So if you had done the workaround of pinning the FirebaseFirestoreInternal version, you will want to undo that when using this release. The next minor version, which should be 11.9.0, will keep those two versions in sync with each other, but that relies on some changes in the cocoapods that will take a while, so this hotfix should help in the meantime. I will close this issue, since either the workaround or hotfix should work for everyone affected. Thanks for bringing this to our attention, and for the folks that provided the Podfile.lock, as that was very helpful.

[a-maurice]

Hi all,

We are investigating this, trying to figure out why this error arose on builds that were seemingly fine before, and seeing if there are any solutions / workarounds available.

[providence94]

#916 (comment)

#916 (comment)

linking similar issues faced by others here

[shniqq]

FYI: Faced the same issue, found a fix for our case, see #975 (didnt see this post when starting to write that one)

[tom-andersen]

Thank you for the report. I will look into this as soon as possible.

[ramibadran]

Hi

we are facing the same issue as below:

We received an email from Apple requesting builds using the iOS 17 SDK or later (due date mid-April), so we proceeded accordingly. However, after upgrading to MacOS Sonoma 14.4 and Xcode 15.3, we encountered several crashes on devices running iOS 17.3 and 17.4.

To address this issue, we upgraded to Firebase SDK version 11.8.0, previously we were using version 11.6.0. Initially, this resolved the issue, and we were able to successfully build for a couple of days.

However, today, when attempting to create another build, we encountered the attached errors and are unable to proceed further with the build process. We attempted to downgrade to version 11.7.0, but encountered the same error with that version as well.

would you please give advice or help in getting out of this?

[providence94]

@shniqq
hey !
your fix worked for me
I just had to do a verbose and manual pod install to see which pods were being installed , find the mismatched pod versions of firebase
and then Modify the script you provided with the correct libraries and force the version.

I have also added a pod script in the below code which signs the relevant files in the pod file which needs selection of development team and signing as now there are many files that needs individual selection of team and signing

@ramibadran - maybe these will work you

`List _firebaseDependencies = new()
{
"FirebaseABTesting",
"FirebaseAppCheckInterop",
"FirebaseAuthInterop",
"FirebaseCoreExtension",
"FirebaseCoreInternal",
"FirebaseFirestoreInternal",
"FirebaseMessagingInterop",
"FirebaseInstallations",
"FirebaseSharedSwift",
};
var podfileContent = File.ReadAllLines(buildPath + "/Podfile").ToList();
var indexOfEndOfDependencies = podfileContent.FindIndex(line => line.Contains("end"));

    const string dependencyVersion = "'10.22.0'";

    foreach (var firebaseDependency in _firebaseDependencies)
    {
        podfileContent.Insert(indexOfEndOfDependencies,
            $"  pod '{firebaseDependency}', {dependencyVersion}");
    }

    var podfileContentCombined = podfileContent
        .Aggregate(string.Empty, (a, b) => a + b + Environment.NewLine);
    File.WriteAllText(buildPath + "/Podfile", podfileContentCombined);
    using (StreamWriter sw = File.AppendText( buildPath + "/Podfile" ))
    {
        sw.WriteLine("post_install do |installer|");
        sw.WriteLine("installer.pods_project.targets.each do |target|");
        sw.WriteLine("target_is_resource_bundle = target.respond_to?(:product_type) && target.product_type == 'com.apple.product-type.bundle'");
        sw.WriteLine("target.build_configurations.each do |config|");
        sw.WriteLine("if target_is_resource_bundle");
        sw.WriteLine($"config.build_settings[\"DEVELOPMENT_TEAM\"] = \"{PlayerSettings.iOS.appleDeveloperTeamID}\"");
        sw.WriteLine("end\nend\nend");
        sw.WriteLine("end");
    }`

[ramibadran]

@shniqq Hi

I tried this solution. Didn't help. I tried making all to 10.22.0, and also making all to 10.23.0. But same error in both cases
also tried with deleting Podfile.lock file and again making pod install
same error and nothing works

attached our Podfile.lock
Podfile.txt

cc @palashSpoilz

[ramibadran]

HI @a-maurice

yes your solution working fine,we have applied it and all is well.
Thank you very much

[mianumar]

Hey all,

So the issue is that the Firestore Unity SDK depends on a specific version of the Firestore iOS SDK, and it is incorrectly pulling in the wrong version of FirebaseFirestoreInternal (which contains an update to gRPC/absl, which is why it is getting undefined symbols in those libraries).

So, for a workaround what you can do is either: In the Podfile generated by Unity, add the line: pod 'FirebaseFirestoreInternal', '10.22.0' alongside the other pods that are listed.

Or, in the Unity project, if you imported via the unityPackage, you should have a file at Assets/Firebase/Editor/FirestoreDependencies.xml In that file add the following line below the Firebase/Firestore one: <iosPod name="FirebaseFirestoreInternal" version="10.22.0" minTargetSdk="8.0"></iosPod> That should result in the Podfile generating the same line mentioned in the first workaround.

Finally, if you imported the library via a package manager such that it is under Packages, what you can do is create the FirestoreDependencies.xml file mentioned above yourself, and just set that line above as the only pod. That should then get included in the set of Dependencies.xml files, and get added to the generated Podfile.

Thanks a lot. It actually Solved my issue.

[Cabskee]

I tried the FirestoreDependencies.xml workaround and unfortunately it did not fix, I am still getting the undefined issues.