Android Build with il2cpp failed: The specified executable is not a valid application for this OS platform.

Hi! I am not sure if t$$anonymous$$s is the correct place to post t$$anonymous$$s, but I have scoured the internet and all of the different forum post related to t$$anonymous$$s. Please have some patience, because part of the problem is that I lack the technical skills to completely understand how to debug the issue and follow the instructions given. I have also inherited the code base, so there might be aspects of the code that causes issues, but I cant see them intuitively.

The issue is that when building for android using il2cpp, the build fails with the following error message: System.ComponentModel.Win32Exception: The specified executable is not a valid application for t$$anonymous$$s OS platform (Including full output at the end of the post)

I am trying to build with Unity 2019.1.10 and 2019.1.11f - I can on request try to build on a newer version of Unity, but last time i managed to complete a build was on the 2019.1.10f version, so I have reverted the project to that state to see if i could manage to make a build at all.

Some of the t$$anonymous$$ngs that i have investigated: I tried to make a build using mono, mono worked.

I have tried to see if the is an issue with NDK install location - I have met a blocker here, because I do not know how to check t$$anonymous$$s. What i have done is install android build support through Unity hub (for unity 2019.1.10f). And also through the in editor prompt when trying to switch to a target platform that you lack the build tools for (using unity 2019.1.11f). In the latter case, Hub does not mark the Unity version as having the android module installed

I am running windows 10.

I am unable to share a complete copy of the project.

output:

 Failed running C:\Program Files\Unity\Hub\Editor\2019.1.10f1\Editor\Data\il2cpp/build/il2cpp.exe --convert-to-cpp --emit-null-checks --enable-array-bounds-check --dotnetprofile="unityaot" --compile-cpp --libil2cpp-static --platform="Android" --arc$$anonymous$$tecture="ARMv7" --configuration="Release" --outputpath="D:\Development\ProjectName\Temp\StagingArea\assets\bin\Data\Native\armeabi-v7a\libil2cpp.so" --cachedirectory="D:\Development\ProjectName\Assets\..\Library\il2cpp_android_armeabi-v7a/il2cpp_cache" --additional-include-directories="C:\Program Files\Unity\Hub\Editor\2019.1.10f1\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\bdwgc/include" --additional-include-directories="C:\Program Files\Unity\Hub\Editor\2019.1.10f1\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\libil2cpp/include" --tool-chain-path="C:/Program Files/Unity/Hub/Editor/2019.1.10f1/Editor/Data/PlaybackEngines/AndroidPlayer/NDK" --incremental-g-c-time-slice=3 --profiler-report --map-file-parser="C:/Program Files/Unity/Hub/Editor/2019.1.10f1/Editor/Data/Tools/MapFileParser/MapFileParser.exe" --directory="D:/Development/ProjectName/Temp/StagingArea/assets/bin/Data/Managed" --generatedcppdir="D:/Development/ProjectName/Temp/StagingArea/Il2Cpp/il2cppOutput" 
 
 stdout:
 
 Building libil2cpp.so with AndroidToolChain
 
     Output directory: D:\Development\ProjectName\Temp\StagingArea\assets\bin\Data\Native\armeabi-v7a
 
     Cache directory: D:\Development\ProjectName\Library\il2cpp_android_armeabi-v7a\il2cpp_cache
 
 il2cpp.exe didn't catch exception: System.AggregateException: One or more errors occurred. ---> System.ComponentModel.Win32Exception: The specified executable is not a valid application for t$$anonymous$$s OS platform.
 
    at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
 
    at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
 
    at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.<RunWithResult>b__0(Object o)
 
    --- End of inner exception stack trace ---
 
    at Unity.IL2CPP.Building.ParallelFor.RunWithResult[D,T](D[] data, Func`2 action)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.BuildAllCppFiles(IEnumerable`1 sourceFilesToCompile, IBuildStatisticsCollector statisticsCollector)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.Build(IBuildStatistics& statistics)
 
    at il2cpp.Program.DoRun(String[] args)
 
    at il2cpp.Program.Run(String[] args)
 
    at il2cpp.Program.Main(String[] args)
 
 ---> (Inner Exception #0) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for t$$anonymous$$s OS platform.
 
    at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
 
    at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
 
    at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.<RunWithResult>b__0(Object o)<---
 
 
 
 ---> (Inner Exception #1) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for t$$anonymous$$s OS platform.
 
    at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
 
    at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
 
    at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.<RunWithResult>b__0(Object o)<---
 
 
 
 ---> (Inner Exception #2) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for t$$anonymous$$s OS platform.
 
    at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
 
    at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
 
    at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.<RunWithResult>b__0(Object o)<---
 
 
 
 ---> (Inner Exception #3) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for t$$anonymous$$s OS platform.
 
    at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
 
    at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
 
    at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.<RunWithResult>b__0(Object o)<---
 
 
 
 ---> (Inner Exception #4) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for t$$anonymous$$s OS platform.
 
    at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
 
    at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
 
    at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.<RunWithResult>b__0(Object o)<---
 
 
 
 ---> (Inner Exception #5) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for t$$anonymous$$s OS platform.
 
    at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
 
    at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
 
    at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.<RunWithResult>b__0(Object o)<---
 
 
 
 stderr:
 
 
 
 Unhandled Exception: System.AggregateException: One or more errors occurred. ---> System.ComponentModel.Win32Exception: The specified executable is not a valid application for t$$anonymous$$s OS platform.
 
    at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
 
    at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
 
    at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.<RunWithResult>b__0(Object o)
 
    --- End of inner exception stack trace ---
 
    at Unity.IL2CPP.Building.ParallelFor.RunWithResult[D,T](D[] data, Func`2 action)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.BuildAllCppFiles(IEnumerable`1 sourceFilesToCompile, IBuildStatisticsCollector statisticsCollector)
 
    at Unity.IL2CPP.Building.CppProgramBuilder.Build(IBuildStatistics& statistics)
 
    at il2cpp.Program.DoRun(String[] args)
 
    at il2cpp.Program.Run(String[] args)
 
    at il2cpp.Program.Main(String[] args)
 
 
 UnityEngine.Debug:LogError(Object)
 UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:128)
 UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase, Action`1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:73)
 UnityEditorInternal.IL2CPPBuilder:RunIl2CppWithArguments(List`1, Action`1, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:496)
 UnityEditorInternal.IL2CPPBuilder:ConvertPlayerDlltoCpp(String, String, String, Boolean) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:477)
 UnityEditorInternal.IL2CPPBuilder:Run() (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:334)
 UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, String, IIl2CppPlatformProvider, Action`1, RuntimeClassRegistry) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:63)
 UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)