Build error with IL2CPP

Questions & Answers
1

Hey everyone. I’m using unity 5.2.1f1 and i encounter these errors when trying to build to iOS using IL2CPP Backend. I have tried using both .Net 2.0 and subset but the errors are still there. Here are the errors.

Error 1:

IL2CPP error (no further information about what managed code was being converted is available)
Additional information: Build a development build for more information. Failed to resolve assembly: ‘/Users/bailey/Luke, Version=0.0, Culture=neutral, PublicKeyToken=null’

Error 2:

Failed running /Applications/Unity/Unity.app/Contents/Frameworks/il2cpp/build/il2cpp.exe --convert-to-cpp --copy-level=None --emit-null-checks --enable-array-bounds-check --extra-types.file=“/Applications/Unity/Unity.app/Contents/Frameworks/il2cpp/il2cpp_default_extra_types.txt” --assembly=“/Users/bailey/Luke, The Ice Cube/Temp/StagingArea/Data/Managed/Assembly-CSharp-firstpass.dll” --assembly=“/Users/bailey/Luke, The Ice Cube/Temp/StagingArea/Data/Managed/Assembly-CSharp.dll” --assembly=“/Users/bailey/Luke, The Ice Cube/Temp/StagingArea/Data/Managed/UnityEngine.UI.dll” --assembly=“/Users/bailey/Luke, The Ice Cube/Temp/StagingArea/Data/Managed/UnityEngine.dll” --generatedcppdir=“/Users/bailey/Luke, The Ice Cube/Temp/il2cppOutput/il2cppOutput”

stdout:
IL2CPP error (no further information about what managed code was being converted is available)
Additional information: Build a development build for more information. Failed to resolve assembly: ‘/Users/bailey/Luke, Version=0.0, Culture=neutral, PublicKeyToken=null’
il2cpp.exe didn’t catch exception: Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: ‘/Users/bailey/Luke, Version=0.0, Culture=neutral, PublicKeyToken=null’
at Unity.IL2CPP.Common.AssemblyLoader.Resolve (IMetadataScope scope) [0x00000] in :0
at Unity.IL2CPP.Common.AssemblyLoader.Load (System.String name) [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter+c__AnonStorey1.<>m__0 (System.String path) [0x00000] in :0
at System.Linq.Enumerable+c__Iterator102[System.String,Mono.Cecil.AssemblyDefinition].MoveNext () [0x00000] in <filename unknown>:0 at System.Linq.Enumerable.ToArray[AssemblyDefinition] (IEnumerable1 source) [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter.Apply () [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter.ConvertAssemblies (System.String assemblies, NiceIO.NPath outputDir) [0x00000] in :0
stderr:

Unhandled Exception:
Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: ‘/Users/builduser/Luke, Version=0.0, Culture=neutral, PublicKeyToken=null’
at Unity.IL2CPP.Common.AssemblyLoader.Resolve (IMetadataScope scope) [0x00000] in :0
at Unity.IL2CPP.Common.AssemblyLoader.Load (System.String name) [0x00000] in :0
at Unity.IL2CPP.AssemblyConverter+c__AnonStorey1.<>m__0 (System.String path) [0x00000] in :0

Error 3:

Exception: /Applications/Unity/Unity.app/Contents/Frameworks/il2cpp/build/il2cpp.exe did not run properly!
UnityEditorInternal.Runner.RunManagedProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:68)
UnityEditorInternal.IL2CPPBuilder.ConvertPlayerDlltoCpp (ICollection1 userAssemblies, System.String outputDirectory, System.String workingDirectory) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:399) UnityEditorInternal.IL2CPPBuilder.Run () (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:293) UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String tempFolder, System.String stagingAreaData, IIl2CppPlatformProvider platformProvider, System.Action1 modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:211)
UnityEditor.iOS.PostProcessiPhonePlayer.PostProcess (UnityEditor.iOS.iOSBuildPostprocessor pp, BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String stagingAreaDataManaged, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry)
UnityEditor.iOS.iOSBuildPostprocessor.PostProcess (BuildPostProcessArgs args)
UnityEditor.PostprocessBuildPlayer.Postprocess (BuildTarget target, System.String installPath, System.String companyName, System.String productName, Int32 width, Int32 height, System.String downloadWebplayerUrl, System.String manualDownloadWebplayerUrl, BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:316)
UnityEditor.HostView:OnGUI()

If anyone could point me in the right direction i would really appreciate it. Thanks :slight_smile:

2

It looks like il2cpp.exe is expecting to find an assembly in the /Users/bailey/ directory named Luke.dll. It is also looking in the /Users/builduser/ directory for an assembly of the same name. Do assemblies exist at those locations?

Also, you should be able to see the il2cpp.exe command line in the Editor.log file. What arguments are passed to il2cpp.exe? Is this Luke.dll assembly passed explicitly on the command line?

3

Found a solution to a similar problem. I had moved the unity project to a Dropbox folder, which gave rise to the problem. I moved back to another folder, and then the build worked.