not working with native aot: Common Language Runtime detected an invalid program

[ivanjx]

my code:

        string query = string.Format(
            "SELECT * from Win32_Printer WHERE Name = '{0}'",
            printerName);
        using WmiConnection con = new WmiConnection();
        ushort status = (ushort)PrinterStatus.Unknown;

        foreach (WmiObject process in con.CreateQuery(query))
        {
            status = (ushort)process["PrinterStatus"];
        }

        return (PrinterStatus)status;

the error:

Common Language Runtime detected an invalid program. The body of method 'Void WmiLight.Wbem.WbemLocator..ctor()' is invalid.
System.InvalidProgramException: Common Language Runtime detected an invalid program. The body of method 'Void WmiLight.Wbem.WbemLocator..ctor()' is invalid.
   at Internal.Runtime.TypeLoaderExceptionHelper.CreateInvalidProgramException(ExceptionStringID, String) + 0x40
   at Internal.Runtime.CompilerHelpers.ThrowHelpers.ThrowInvalidProgramExceptionWithArgument(ExceptionStringID, String) + 0x9
   at WmiLight.Wbem.WbemLocator..ctor() + 0x15
   at WmiLight.WmiConnection.Open() + 0x43
   at WmiLight.WmiConnection.InternalExecuteQuery(WmiQuery query) + 0x39
   at WmiLight.WmiConnection.ExecuteQuery(WmiQuery query) + 0x2c

csproj:

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0-windows</TargetFramework>
    <Nullable>enable</Nullable>
    <InvariantGlobalization>true</InvariantGlobalization>
    <EnableWindowsTargeting>true</EnableWindowsTargeting>
    <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
    <PublishAot>true</PublishAot>
  </PropertyGroup>

  <ItemGroup>
    <TrimmerRootAssembly Include="myassemblyname" />
    <TrimmerRootAssembly Include="WmiLight" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Extensions.Hosting.WindowsServices" Version="8.0.0" />
    <PackageReference Include="Serilog.AspNetCore" Version="8.0.0" />
    <PackageReference Include="Serilog.Sinks.Console" Version="5.0.1" />
    <PackageReference Include="Serilog.Sinks.EventLog" Version="3.1.0" />
    <PackageReference Include="System.Drawing.Common" Version="8.0.0" />
    <PackageReference Include="System.ServiceProcess.ServiceController" Version="8.0.0" />
    <PackageReference Include="WmiLight" Version="4.0.0" />
  </ItemGroup>

</Project>

[MartinKuschnik]

AOT is currently not supported. Lease see #11 for more details.

[MartinKuschnik]

I'm working on a new verion that is compatible with AOT. It will take a few days.

[MartinKuschnik]

@ivanjx Have a look to the version v5.0.0-pre. Native AOT should work with this version.

Please give me feedback so that I can make the pre-release to a release.

[ivanjx]

thanks a lot @MartinKuschnik the latest pre release version works perfectly in my case!

[ivanjx]

one more thing is it possible to compile the cpp wrapper as a static library so it wont output a dll similar to this AvaloniaUI/Avalonia#9503

[MartinKuschnik]

"Static library" means that the library is going to be merged with your final application. This concept doesn't exist in .net. .net supports DLLs only.

Maybe there's a way by using C++ CLI but this would require more work - sorry.

[ivanjx]

the concept does not exists with .net but it does exist with .NET Native AOT.
all i need is just the static .lib version of the cpp wrapper. no C++/CLI involved (and no one should ever use it again).

[MartinKuschnik]

Ok, your application that gets compiled to native code could link statically.

Why it is so important for you to have only a single file?

[ivanjx]

easier deployment. also to make sure the dependency will always be there and cannot be easily altered.

[MartinKuschnik]

I can add the static lib but does not know how to link it in the project file without using absolute paths.

[ivanjx]

im fine with just be able to compile it myself like i did with skiasharp

[MartinKuschnik]

try version 5.0.1-pre

[ivanjx]

thanks a lot. i will try it in a few hours.

[MartinKuschnik]

For me worked:

<ItemGroup>
  <!-- Generate direct PInvokes for Dependency -->
  <DirectPInvoke Include="WmiLight.Native.dll" />
  <!-- Specify library to link against -->
  <NativeLibrary Include="wbemuuid.lib" Condition="$(RuntimeIdentifier.StartsWith('win'))" />
  <NativeLibrary Include="path to x64 WmiLight.Native.lib " Condition="$(RuntimeIdentifier.StartsWith('win'))" />
</ItemGroup>

[MartinKuschnik]

The following works also for me but does not require absolute paths.

<ItemGroup>
  <!-- Generate direct PInvokes for Dependency -->
  <DirectPInvoke Include="WmiLight.Native.dll" />
  <!-- Specify library to link against -->
  <NativeLibrary Include="wbemuuid.lib" Condition="$(RuntimeIdentifier.StartsWith('win'))" />
  <NativeLibrary Include="$(OutputPath)WmiLight.Native.lib" Condition="$(RuntimeIdentifier.StartsWith('win'))" />
</ItemGroup>

The problem with this solution: the .lib files will be copies to the output directory. This is confusing to all other users of the library.

Would it be fine for you if i would locate the .lib files into an other directory. Than you would need to reference to the nuget directory.

[MartinKuschnik]

Please try v.5.0.1-pre2...

[MartinKuschnik]

@ivanjx Works for you?

[ivanjx]

hi @MartinKuschnik

sorry i was tasked with different projects. i have tried your new nuget but it does not seem to copy the lib files into the directory. i grabbed the .lib files manually and it seemed to work but i am still missing the wbemuuid.lib. where can i find this? thanks.

EDIT:
nevermind. it seems that the missing lib file is provided automatically. now my app is truly native and single file with 0 dependencies.

[ivanjx]

also for the .lib files there is a warning:

WmiLight.Native.lib(WmiLightNative.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LT
  CG; add /LTCG to the link command line to improve linker performance

which can be fixed by following this (i dont know how to do it with just command line yet):

• go to c/c++ -> All Options.
• find Whole Program Optimization. change to No.
• go to c/c++ -> Command Line. add /bigobj.

[MartinKuschnik]

@ivanjx Try Version 5.0.2-pre

[MartinKuschnik]

@ivanjx Try directly Version 5.1.0

[ivanjx]

@MartinKuschnik thanks! now the warnings are gone. though i still not able to use this $(OutputPath)WmiLight.Native.lib but it is fine as long as i can use the .lib file.

[MartinKuschnik]

Nice!

To use $(OutputPath)WmiLight.Native.lib would require to add the .lib to the runtime folder of the NuGet package. But this would effect alos the conumers that does noch linke to the static library.

[ivanjx]

it is okay not to include the .lib at all as long as there is an easy way to compile it myself or just download it.

[MartinKuschnik]

@ivanjx Please have a look to Version 5.1.1 and Native AOT deployment.

You should be able to replace

  <!-- Generate direct PInvokes for Dependency -->
  <DirectPInvoke Include="WmiLight.Native.dll" />
  <!-- Specify library to link against -->
  <NativeLibrary Include="wbemuuid.lib" Condition="$(RuntimeIdentifier.StartsWith('win'))" />
  <NativeLibrary Include="path to x64 WmiLight.Native.lib " Condition="$(RuntimeIdentifier.StartsWith('win'))" />

with

    <PublishWmiLightStaticallyLinked>true</PublishWmiLightStaticallyLinked>

[ivanjx]

@MartinKuschnik just tried and it works well. thanks.