Unity PostProcess Build script fails when running from command line

Question

I am trying to build my project from the command line targeting iOS. When I build this from the editor, everything works! I have a PostProcess build script that I use.

When I try to build form the command line using the following command: /Applications/Unity/Unity.app/Contents/MacOS/Unity -quit -batchmode -executeMethod BuildScript.BuildIOS -nographics -buildTarget iOS

I am getting an error from my PostProcess build script saying: Assets/Editor/MyBuildPostprocessor.cs(9,23): error CS0234: The type or namespace name Xcode' does not exist in the namespaceUnityEditor.iOS'. Are you missing an assembly reference?

The line that generates the error is a simple using clause:

using UnityEditor.iOS.Xcode;

So it seems that for some reason, the command line build mechanism does not recognise the UnityEditor.iOS.Xcode assembly, and my PostProcess build script cannot run.

Any ideas?

vmchar · Accepted Answer · 2018-12-25 12:25:29Z

1

This is a known case when iOS project is built manually in Unity without errors and fails building on build-server (Unity cloud, Jenkins, TeamCity and others). I think that your case is similar with it. Because if you take a look at the build-server process of building Unity app you'll see that it also uses command line command

/Applications/Unity/Unity.app/Contents/MacOS/Unity -quit -batchmode -executeMethod BuildScript.BuildIOS -nographics -buildTarget iOS

As for build-server issue, the solution is to put all your post-process scripts inside #if UNITY_IOS condition. And it's possible that you've misunderstood the error you get. Unity says that it doesn't understand XCode namespace while trying to include your post-process script inside your build. And of course, Unity can't include XCode namespace because it's available in Unity Editor only.

So try adding #if UNITY_IOS at the very beginning of your post-process source, even before using section and #endif the the very end of the source. In this case Unity won't compile post-process script during building phase, but will call your post-process script after XCode project will be created.

Unfortunately, I couldn't find any information why manual and command line build processes differ.

answered Dec 25, 2018 at 12:25

vmchar

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2 Comments

Ran Over a year ago

Thank you @vmchar for answering. My post-process script already includes a #if UNITY_IOS condition around it, so it's not that..

frankhermes - Stop OpenAI Over a year ago

I found that the parameter -buildTarget iOS was the only way to make Unity actually define UNITY_IOS. Without it, the define was not there and our builds would fail because of it.

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