Duplicate symbols for architecture arm64 in xCode for Google VR project created with Unity

I'm getting this error when I try to build on xCode a project that uses Google VR SDK. The xCode project was built from Unity3D. I attach an image with the last lines of the error log from xCode.

It seems the problem is xCode is finding duplicate code, as it finds the same in libGVRSDK.a and in libgvrunity.a.

I tried this solution, based on using the following shell script:

set -ex
lipo libgvrunity.a -thin armv7 -output libgvrunity-armv7.a
lipo libgvrunity.a -thin arm64 -output libgvrunity-arm64.a

ar -t libgvrunity-armv7.a | grep 'GTMLogger\|GTMSession' | xargs ar -dv libgvrunity-armv7.a
ar -t libgvrunity-arm64.a | grep 'GTMLogger\|GTMSession' | xargs ar -dv libgvrunity-arm64.a

lipo libgvrunity.a -replace armv7 libgvrunity-armv7.a -replace arm64 libgvrunity-arm64.a -output libgvrunity-fat.a

rm libgvrunity-armv7.a libgvrunity-arm64.a

mkdir -p backup
mv libgvrunity.a backup
mv libgvrunity-fat.a libgvrunity.a

After trying this solution, I get the same error (Duplicate symbols...). However the previous error was with another two libraries...

I'm using Unity 2017.1.1 and I have tried with different versions of Google VR.

I'm really stuck and I need to solve this problem...

Thank you very much in advance.

 

Thank you for your quick answer.

There are not duplicated libraries in my Plugins/iOS folder. I attach an image of my folders.

I'm also installing again Unity 5.6.0, as I successfully built a project with Google VR for iOS using this version. I don't understand what Pods is doing in xCode project generated with new Versions of Unity.

Any other idea please?

 

I installed last version of Unity and now I can build the project and it works, but only if you make the app to execute applicationWillResignActive() and applicationDidBecomeActive () after it.

It's very weird. If I could force applicationDidBecomeActive() method to execute I think the App would work fine. Can i force it?