Build iOS failed: Undefined symbols for architecture arm64: "_GADURequestInterstitial"

• Unity version: 2020.3.1 - 2020.3.6
• Google Mobile Ads Unity plugin version: 6.0.0
• Platform: iOS
• Platform OS version: n/a
• Any specific devices issue occurs on: n/a
• Mediation ad networks used, and their versions:n/a
• Xcode: 12.2

Steps to reproduce:

=> Create empty Unity project => Copy sample HelloWorld to Assets folder => Update Admob appId => Use original iOS Resolver Settings (enable use_frameworks! + enable Always add the main target) => Build to Xcode => Build using Xcode

Changing iOS Resolver Settings gives same result:

• Disable use_frameworks!
• Disable Always add the main target)

[JillSong]

@jungletree Thanks for explaining the problem.

We changed how we package the plugin for v6.0, and the issue lies in the dll build, not in the source code. So please import our source code instead of the unity package for now. We will release the fix soon.

[lucianocheng]

I was able to get around this by commenting out line 7897 in Classes\Native\GoogleMobileAds.iOS.cpp in XCode:

reinterpret_cast<PInvokeFunc>(GADURequestInterstitial)(___interstitial0, ___request1);

This looks like the casting / native invocation of the GADURequestInterstitial function. Without this invocation, the compiler shouldn’t look for it.

Note that this code looks auto-generated, so it may not appear consistently on line 7897.

Also note that I don’t use interstitials in my code, so I’m not sure if this disables interstitials entirely or not. It may be more correct to implement the function as indicated by @jungletree above.