Cannot build for Linux IL2CPP using Unity 2020.2.0b1 on Win 10?

I updated to Unity 2020.2.0b1 (on Windows 10), after seeing the new "Linux Build Support (IL2CPP)" addon in the Unity Hub, which I then also installed.

But Build is greyed out when using IL2CPP, with the message "Building Linux IL2CPP player requires a sysroot toolchain package to be installed."

 

Your solution worked perfectly in Unity 2020.2.0b1, but after updating to 2020.2.b2, the error message is back.
As ideas?
Thanks

 

Tried with, and without. Same result.

 

The only notable difference is that while updating, I did not install the Linux Mono build module this time, only the IL2CPP one.

 

Just tried with a new project, and added the line to the manifest.
I can confirm this workaround does not work anymore in 2020.2.0b2.

 

Case 1278936
Thanks

 

I'm actually not sure if my issues are related to the one in your link, since I can build using mono, but have unsuccessfully tried using Linux-IL2CPP in 3 test-scenes now (screenshot below), but I confirm having both modules installed.
When the next update is there, I'll not install the mono package (it seems one cannot uninstall single packages).

 

Hi, Does building linux il2cpp from macos not supported yet? I installed com.unity.toolchain.macos-x86_64-linux-x86_64 0.1.15-preview, but it shows "failed to initialize package: com.unity.toolchain.macos-x86_64-linux-x86_64" and number of "failed to initialize sysroot com.unity.toolchain.macos-x86_64-linux-x86_64" errors.

(Both Unity 2020.1.7f1 and 2020.2.0b6 are failed)

 

I checked Editor.log and found that 7-Zip log says that "Scanning the drive for archives: ERROR No more files" with strange project path. After further investigation, I found that spaces in project path makes issue, so when I removed all spaces from project path, it works.

 

Strange, after rebooting my PC, new-project which contains spaces in project path does not throw any error. Forget this.

 

Similar things happened to me that stop me from continuing the project:

1) when both IL2CPP and Mono for Linux installed, IL2CPP is considered uninstalled.
2) No clang.exe. I checked with Everything, the only 2 clang.exe I have on my machine are

D:\Microsoft\AndroidNDK64\android-ndk-r15c\toolchains\llvm\prebuilt\windows-x86_64\bin\clang.exe

and

C:\Program Files\Unity\Hub\Editor\2018.2.14f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_FastComp_Win\clang.exe

(project path shortened)

Spoiler: ......\2020.1.10f1\Editor\Data\il2cpp/build/deploy/netcoreapp3.0/il2cpp.exe did not run properly!

Failed running "......\2020.1.10f1\Editor\Data\il2cpp/build/deploy/netcoreapp3.0/il2cpp.exe" --convert-to-cpp --emit-null-checks --enable-array-bounds-check --dotnetprofile="unityaot" --compile-cpp --libil2cpp-static --platform="Linux" --architecture="x64" --configuration="Release" --outputpath="......\unity\Temp/StagingArea/Data\Native\GameAssembly.so" --cachedirectory="......\Assets\..\Library/il2cpp_cache" --baselib-directory="....../2020.1.10f1/Editor/Data/PlaybackEngines/LinuxStandaloneSupport\Variations\linux64_headless_nondevelopment_il2cpp" --avoid-dynamic-library-copy --incremental-g-c-time-slice=3 --profiler-report --map-file-parser=D:/UnityInstallations/2020.1.10f1/Editor/Data/Tools/MapFileParser/MapFileParser.exe --directory=....../Temp/StagingArea/Data/Managed --generatedcppdir=....../Temp/StagingArea/Data/il2cppOutput --extra-types-file=....../unity/Temp/StagingArea/Data/extra-types.txt

stdout:
Running il2cpp.exe in server GC mode.
il2cpp.exe didn't catch exception: System.InvalidOperationException: C++ code builder is unable to build C++ code for Linux: Could not find valid clang executable at clang.exe
at Unity.IL2CPP.Building.CppProgramBuilder.ThrowIfCannotBuildInCurrentEnvironment()
at Unity.IL2CPP.Building.CppProgramBuilder.Build(IBuildStatistics& statistics)
at il2cpp.Compilation.CompilationDriver.Run(RuntimePlatform platform, BuildingOptions buildingOptions)
at il2cpp.Program.DoRun(String[] args, RuntimePlatform platform, BuildingOptions buildingOptions)
at il2cpp.Program.Run(String[] args, Boolean setInvariantCulture)
at il2cpp.Program.Main(String[] args)
stderr:
Unhandled exception. System.InvalidOperationException: C++ code builder is unable to build C++ code for Linux: Could not find valid clang executable at clang.exe
at Unity.IL2CPP.Building.CppProgramBuilder.ThrowIfCannotBuildInCurrentEnvironment()
at Unity.IL2CPP.Building.CppProgramBuilder.Build(IBuildStatistics& statistics)
at il2cpp.Compilation.CompilationDriver.Run(RuntimePlatform platform, BuildingOptions buildingOptions)
at il2cpp.Program.DoRun(String[] args, RuntimePlatform platform, BuildingOptions buildingOptions)
at il2cpp.Program.Run(String[] args, Boolean setInvariantCulture)
at il2cpp.Program.Main(String[] args)

UnityEditorInternal.Runner.RunProgram (UnityEditor.Utils.Program p, System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser) (at <3037c1046402403280ab8b0782ca806f>:0)
UnityEditorInternal.Runner.RunNetCoreProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, System.Action`1[T] setupStartInfo) (at <3037c1046402403280ab8b0782ca806f>:0)
UnityEditorInternal.IL2CPPBuilder.RunIl2CppWithArguments (System.Collections.Generic.List`1[T] arguments, System.Action`1[T] setupStartInfo, System.String workingDirectory) (at <3037c1046402403280ab8b0782ca806f>:0)
UnityEditorInternal.IL2CPPBuilder.ConvertPlayerDlltoCpp (UnityEditor.Il2Cpp.Il2CppBuildPipelineData data, System.String outputDirectory, System.String workingDirectory, System.Boolean platformSupportsManagedDebugging) (at <3037c1046402403280ab8b0782ca806f>:0)
UnityEditorInternal.IL2CPPBuilder.Run () (at <3037c1046402403280ab8b0782ca806f>:0)
UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String stagingAreaData, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Action`1[T] modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) (at <3037c1046402403280ab8b0782ca806f>:0)
DesktopStandalonePostProcessor.SetupStagingArea (UnityEditor.Modules.BuildPostProcessArgs args, System.Collections.Generic.HashSet`1[T] filesToNotOverwrite) (at <3037c1046402403280ab8b0782ca806f>:0)

(2020.1.10 and 2020.1.7 tested

I tried the package you mentioned, but it's not working and gives the following error:

Spoiler: Stacktrace

Failed to initialize package: com.unity.toolchain.win-x86_64-linux-x86_64
UnityEditor.Il2Cpp.SysrootPackage:Initialize()
UnityEditorInternal.SysrootManager:FindSysroot(String, String)
UnityEditorInternal.SysrootManager:FindSysroot(BuildTarget)
System.Collections.Generic.List`1:AddRange(IEnumerable`1)
UnityEditorInternal.Il2CppNativeCodeBuilderUtils:AddBuilderArguments(Il2CppNativeCodeBuilder, String, IEnumerable`1, IEnumerable`1, Il2CppCompilerConfiguration)
UnityEditorInternal.IL2CPPBuilder:ConvertPlayerDlltoCpp(Il2CppBuildPipelineData, String, String, Boolean)
UnityEditorInternal.IL2CPPBuilder:Run()
UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, IIl2CppPlatformProvider, Action`1, RuntimeClassRegistry)
DesktopStandalonePostProcessor:SetupStagingArea(BuildPostProcessArgs, HashSet`1)
DesktopStandalonePostProcessorostProcess(BuildPostProcessArgs)

 

How the hell do I fix that?

 

I am also seeing this trying to build to Linux target on 2020.2.0.b11.3484 I have added the toolchain to the package manifest.json and have the following set up and console logs below:

New HDRP project
Windows/Linux il2cpp build support only
Add package manifest entry above
Restart Unity

INFO
Found sysroot: com.unity.sysroot, hp=, ha=, tp=, ta=
UnityEngine.Debug:Log (object)
UnityEditorInternal.SysrootManager:RegisterSysroots ()
UnityEditorInternal.SysrootManager:Initialize ()
UnityEditor.Modules.ModuleManager:InitializePlatformSupportModules ()

INFO
Found sysroot: com.unity.toolchain.win-x86_64-linux-x86_64, hp=windows, ha=x86_64, tp=linux, ta=x86_64
UnityEngine.Debug:Log (object)
UnityEditorInternal.SysrootManager:RegisterSysroots ()
UnityEditorInternal.SysrootManager:Initialize ()
UnityEditor.Modules.ModuleManager:InitializePlatformSupportModules ()

INFO
Found sysroot: com.unity.sysroot.linux-x86_64, hp=, ha=, tp=linux, ta=x86_64
UnityEngine.Debug:Log (object)
UnityEditorInternal.SysrootManager:RegisterSysroots ()
UnityEditorInternal.SysrootManager:Initialize ()
UnityEditor.Modules.ModuleManager:InitializePlatformSupportModules ()

ERROR
Failed to initialize package: com.unity.toolchain.win-x86_64-linux-x86_64
UnityEditor.Il2Cpp.SysrootPackage:Initialize ()
UnityEditorInternal.SysrootManager:FindSysroot (string,string)
UnityEditorInternal.SysrootManager:FindSysroot (UnityEditor.BuildTarget)
UnityEditor.LinuxStandalone.LinuxStandaloneBuildWindowExtension:GetCannotBuildIl2CppPlayerInCurrentSetupError ()
DesktopStandaloneBuildWindowExtension:ShowIl2CppErrorIfNeeded ()
DesktopStandaloneBuildWindowExtension:ShowPlatformBuildOptions ()
UnityEngine.GUIUtilityrocessEvent (int,intptr,bool&)

 

I had more or less the same problem with building for Linux on a Windows machine; Installing "Linux (IL2CPP) Target Support" directly from Unity 2020.2.2's What's New Page fixed it for me.