Unity: iOS build errors compilation

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Invalid SWIFT_VERSION: Could not parse version component from: '1 5'

1. Select UnityFramework Target and go to Build Settings.

2. Change Swift Language Version from "Swift 5" to "Swift 5" (no mistake here).

3. Try deploying it again.

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GoogleAppMeasurement requires CocoaPods version `>= 1.10.2, which is not satisfied by your current version, 1.10.1

First double-check cocopods version with

pod --version

you will realize it has cocopods 1.10.1 version as is mentioned in the error. To fix this do the following

sudo gem uninstall cocoapods
sudo gem install cocoapods -v 1.10.2

Note: don't run sudo gem install cocoapods because it will get the latest cocopods which is probably not what you want.

Source: https://forum.unity.com/threads/cocoapods-installation-failure-when-building-for-ios.1167700/

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Missing RegisterMonoModule.h

With Unity 2019.3 or above if you use Facebook SDK you will get this error Missing RegisterMonoModule.h while building in XCode.

To fix this you can use this - https://gist.github.com/ntratcliff/3942abd1eed9d704713a27616f09628b

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Exception: Calling TargetGuidByName with name='Unity-iPhone' is deprecated.

In my case, I am using Unity 2019.4.17f1 and integrating MoPub for monetization. Then, I see this error when I try to build for iOS.

To fix this have to use GetUnityMainTargetGuid instead of TargetGuidByName.

So replace following

var target = project.TargetGuidByName("Unity-iPhone");

with

var target =
	#if UNITY_2019_3_OR_NEWER    
	    project.GetUnityMainTargetGuid();
	#else    
	    project.TargetGuidByName("Unity-iPhone");
	#endif

Reference: https://github.com/mopub/mopub-unity-sdk/issues/111

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'MoPub.h' file not found

When I integrated MoPub's Facebook Audience Network(FAN) mediation network, I saw this error. This is because FAN uses use_frameworks! and iOS won't build with use_frameworks! in Podfile.

Workaround:

1. Remove <iosPod name="MoPub-SDK-Plugin" minTargetSdk="10.0" path="Assets/MoPub/Plugins/iOS"/> from Assets/MoPub/Scripts/Editor/MoPubDependencies.xml

2. Delete Assets/MoPub/Plugins/iOS/MoPub-SDK-Plugin.podspec

3. Check iOS as platform for plugin for all files inside Assets/MoPub/Plugins/iOS

Reference: https://github.com/mopub/mopub-unity-sdk/issues/151