Exception: The required file: '/Users.../iOSSupport/Trampoline/Libraries/libiPhone-lib-il2cpp.a'

Unity Engine
,
1

Trying to do a build to XCode. It was compiling, and working great with earlier versions. Then I did a required upgrade, and shocker, now getting errors when trying to compile. grumbles

Now I’m getting this error:

Exception: The required file: ‘/Users/dad/Unity3D/2019.3.3f1/PlaybackEngines/iOSSupport/Trampoline/Libraries/libiPhone-lib-il2cpp.a’ does not exist
UnityEditor.iOS.PostProcessiPhonePlayer.InstallIncludedFiles (UnityEditor.iOS.PostProcessiPhonePlayer+IncludedFileList includedFiles, System.String installPath, UnityEditor.iOS.PostProcessiPhonePlayer+BuildSettings bs, UnityEditor.Build.Reporting.BuildReport buildReport) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/BuildPostProcessor.cs:1515)
UnityEditor.iOS.PostProcessiPhonePlayer.UpdateInstallLocation (UnityEditor.iOS.PostProcessiPhonePlayer+ProjectPaths paths, UnityEditor.iOS.PostProcessiPhonePlayer+BuildSettings bs, UnityEditor.iOS.PostProcessiPhonePlayer+IncludedFileList includedFiles, UnityEditor.Build.Reporting.BuildReport buildReport) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/BuildPostProcessor.cs:1416)
UnityEditor.iOS.PostProcessiPhonePlayer.PostProcess (UnityEditor.iOS.PostProcessiPhonePlayer+BuildSettings bs, UnityEditor.iOS.PostProcessiPhonePlayer+ProjectPaths paths, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport buildReport) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/BuildPostProcessor.cs:808)
UnityEditor.iOS.PostProcessiPhonePlayer.PostProcess (UnityEditor.iOS.PostProcessorSettings postProcessorSettings, UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/BuildPostProcessor.cs:657)
UnityEditor.iOS.iOSBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/ExtensionModule.cs:45)
Rethrow as BuildFailedException: Exception of type ‘UnityEditor.Build.BuildFailedException’ was thrown.
UnityEditor.iOS.iOSBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/ExtensionModule.cs:49)
UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at /Users/builduser/buildslave/unity/build/Editor/Mono/Modules/DefaultBuildPostprocessor.cs:27)
UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:340)
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun() (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPlayerWindow.cs:123)

What’s the magic fix?

Thanks!

2

My Specs:
Mac OS Catalina v 10.15.4
Unity v 2019.3.3f1

############## SOLUTION ##############

It turned out that file was located elsewhere. Fortunately it was an easy fix. Copy all of the files from the one location to the expected location.

New Location:
/Applications/Unity/PlaybackEngines/iOSSupport/Trampoline/Libraries

Expected Location:
/Users/dad/Unity3D/2019.3.3f1/PlaybackEngines/iOSSupport/Trampoline/Libraries

############## BORING DETAILS ##############

There were only 4 files in the expected directory. During the copy I chose to keep the old, and copy the new files. Now there is a total of 26 files in the expected dir. I am guessing that these files were missing due to a new Unity version installation issue. Fortunately it was an easy fix. Hopefully this helps someone else save some time. :slight_smile:

3

Scratch ALL of that. I got a new error after doing the above. I ended up reverting to a previous version of Unity. So frustrating guys!

4

Any update on this?

5

Yes. I upgraded to the latest version of Unity, and the problem resolved itself. IIRC, the version I upgraded to was 2019.4.0.x. Currently using 2019.4.1.1f1, and it is also working perfectly.

I’m not sure if it was this issue, or a different issue where I did this: Exported the entire project as an asset. Then I started a new game with the newer version of Unity. Then import the asset. That fixed it, but there were obviously some values that I needed to reassign in the inspector, and other little annoyances.

6

Hello. I am using Unity Version 2019.3.7f1 and I have exactly the problem as mentioned above! Unfortunately none of the fixes helped me at all. I have tried everything but nothing fixed the error. I am really desperate… PLEASE HELP!!

Thank you.

7

im having this same issue except it’s across all projects on my Mac so im thinking it’s something with the program files for sure. when I checked, the il2cppa file was there but it wasn’t downloaded. I kept attempting to “download now” which didn’t work, although I have about 20gb directly on my Mac hdd. as of now the file removed itself somehow, and although I have versions 2019.4, 2020.2, and 2020.3, none of them have the file in question. im thinking maybe I should reinstall unity somehow and see if that solves the problem, but I have no idea whatsoever what caused this issue

8

my current solution was to install a newer version of unity, and hope it builds. it did, so I’ll post back if anything changes. hope this helps someone lol

9

Running into this in 2021.3.4f1. Haven’t found a solution.

Edit: Solved by uninstalling and updating to 2021.3.7f1.

10

For me the issue was with the Mac OS - I have Optimize Mac Storage turned on and that removed the files from my hard drive even though it looked like they were there. I had to click the little cloud icon next to the file to download it again in order to build it properly.