AdMobを入れたUnityプロジェクトがUnity Cloud Build上でビルドエラーになるときの対処法 ref: http://qiita.com/murapong/items/98977331e6db4bd6a03f

AdMobDependencies.cs

#elif UNITY_IOS
//        Type iosResolver = Google.VersionHandler.FindClass(
//            "Google.IOSResolver", "Google.IOSResolver");
//        if (iosResolver == null) {
//            return;
//        }
//        Google.VersionHandler.InvokeStaticMethod(
//            iosResolver, "AddPod",
//            new object[] { "Google-Mobile-Ads-SDK" },
//            namedArgs: new Dictionary<string, object>() {
//                { "version", "7.13+" }
//            });
#endif  // UNITY_IOS

file0.txt

2479: [Unity] 'pod' command not found; unable to generate a usable Xcode project. You can install cocoapods with the Ruby gem package manager:
2480: [Unity]  > sudo gem install -n /usr/local/bin cocoapods
2481: [Unity]  > pod setup

file1.txt

2491: [Unity] Error running cocoapods. Please ensure you have at least version  1.0.0.  You can install cocoapods with the Ruby gem package manager:
2492: [Unity]  > sudo gem install -n /usr/local/bin cocoapods
2493: [Unity]  > pod setup
2494: [Unity] 'pod --version' returned status: 1
2495: [Unity] output:

log1.txt

2479: [Unity] 'pod' command not found; unable to generate a usable Xcode project. You can install cocoapods with the Ruby gem package manager:
2480: [Unity]  > sudo gem install -n /usr/local/bin cocoapods
2481: [Unity]  > pod setup

log2.txt

2491: [Unity] Error running cocoapods. Please ensure you have at least version  1.0.0.  You can install cocoapods with the Ruby gem package manager:
2492: [Unity]  > sudo gem install -n /usr/local/bin cocoapods
2493: [Unity]  > pod setup
2494: [Unity] 'pod --version' returned status: 1
2495: [Unity] output:

XcodePostProcessBuild.cs

using UnityEditor;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;

public static class XcodePostProcessBuild
{
    [PostProcessBuild]
    public static void OnPostProcessBuild(BuildTarget target, string path)
    {
        if (target != BuildTarget.iOS)
        {
            return;
        }

        var project = new PBXProject();
        project.ReadFromFile(PBXProject.GetPBXProjectPath(path));

        var projectGuid = project.TargetGuidByName(PBXProject.GetUnityTargetName());
        // Enable Modules (C and Objective-C)をYESに設定する
        project.SetBuildProperty(projectGuid, "CLANG_ENABLE_MODULES", "YES");

        project.WriteToFile(PBXProject.GetPBXProjectPath(path));
    }
}