imvmc.exe errors when compiling a basic jar file #110

KevM · 2022-07-14T15:06:31Z

I am having problems getting ikvmc.exe to compile a rudimentary jar file. Here is the command line and result.

.\IKVMc.exe .\hello.jar                                                                                                       pwsh  09:57:23 
IKVM.NET Compiler (8.2.0-prerelease.392)
Copyright © 2022 Jeroen Frijters, Windward Studios, Jerome Haltom, Shad Storhaug


*** INTERNAL COMPILER ERROR ***

PLEASE FILE A BUG REPORT FOR IKVM.NET WHEN YOU SEE THIS MESSAGE

ikvmc, Version=8.2.0.0, Culture=neutral, PublicKeyToken=13235d27fcbfff58
C:\Users\scoun\Downloads\testing\
3.1.25 64-bit

System.IO.FileNotFoundException: Reference assemblies directory: C:\Users\packs\Downloads.Ref\3.1.0\ref\netcoreapp3.1
   at IKVM.Reflection.Universe.BuildRefDirFrom(String runtimeDir) in D:\a\ikvm\ikvm\IKVM.Reflection\Universe.cs:line 180
   at IKVM.Reflection.Universe.get_ReferenceAssembliesDirectory() in D:\a\ikvm\ikvm\IKVM.Reflection\Universe.cs:line 156
   at IKVM.Reflection.Universe.DefaultResolver(String refname, Boolean throwOnError) in D:\a\ikvm\ikvm\IKVM.Reflection\Universe.cs:line 842
   at IKVM.Reflection.Universe.Load(String refname, Module requestingModule, Boolean throwOnError) in D:\a\ikvm\ikvm\IKVM.Reflection\Universe.cs:line 799
   at IKVM.Internal.AssemblyResolver.Init(Universe universe, Boolean nostdlib, IList`1 references, IList`1 userLibPaths) in D:\a\ikvm\ikvm\ikvmc\IKVM\Internal\AssemblyResolver.cs:line 93
   at ikvmc.IkvmcCompiler.Compile(String[] args) in D:\a\ikvm\ikvm\ikvmc\IkvmcCompiler.cs:line 178
   at ikvmc.IkvmcCompiler.Main(String[] args) in D:\a\ikvm\ikvm\ikvmc\IkvmcCompiler.cs:line 112

I created the jar file from a basic hello world.

class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, World!");
    }
}

Jar creation build against openjdk 11.0.12

javac hello.java
jar hello.jar helloworld.class

I am pretty much ignorant of java development in general so potentially I am missing something basic. I do know .NET pretty well and fostered a library that used IKVM for exposing a java library on dotnet. I am attempting to get this working on dotnet core but the ikvmc.exe step fails with a similar error so I tried this basic example to debug.

wasabii · 2022-07-14T17:41:39Z

This seems like an odd version to be using: 8.2.0-prerelease.392.

8.2.0 was released almost two weeks ago.

Also, ikvmc will require that all required dependent DLL files are specified using -reference. That includes IKVM.Java from the bin package. And it requires -runtime be specified to to point to IKVM.Runtime.

This is all much easier using IKVM.Maven.Sdk or IkvmReference in your build files, however.

wasabii · 2022-08-21T18:09:10Z

stale

KevM · 2022-09-03T20:27:34Z

Still having this problem with the latest release.

wasabii · 2022-09-03T20:39:53Z

Post the command line and error message.

jyotirmayghosh · 2023-11-08T07:35:06Z

Hey @wasabii
I am trying out IKVM to convert jar to dll. I started with ikvm-7.2 and later came across the latest version ikvm-8.7.0.

I am trying to convert from the command line.
Command -> ikvmc -target:library -out:offlinepos.dll -r:offlinepos.jar
Error ->

IKVM.Tools.Importer (8.7.0+Branch.tags-8.7.0.Sha.8fd37569453a3889205c22f1547e0609545cab4a)
Copyright © 2023 Jeroen Frijters, Windward Studios, Jerome Haltom, Shad Storhaug


*** INTERNAL COMPILER ERROR ***

PLEASE FILE A BUG REPORT FOR IKVM.NET WHEN YOU SEE THIS MESSAGE

IKVM.Tools.Importer, Version=8.7.0.0, Culture=neutral, PublicKeyToken=13235d27fcbfff58
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\
4.0.30319.42000 64-bit

System.InvalidOperationException: PE image does not have metadata.
   at System.Reflection.PortableExecutable.PEReader.GetMetadataBlock()
   at System.Reflection.Metadata.PEReaderExtensions.GetMetadataReader(PEReader peReader, MetadataReaderOptions options, MetadataStringDecoder utf8Decoder)
   at IKVM.Tools.Importer.StaticCompiler.GetAssemblyNameIfCoreLib(String path) in /_/src/IKVM.Tools.Importer/StaticCompiler.cs:line 101
   at IKVM.Tools.Importer.StaticCompiler.FindCoreLibName(IList`1 references, IList`1 libpaths) in /_/src/IKVM.Tools.Importer/StaticCompiler.cs:line 78
   at IKVM.Tools.Importer.StaticCompiler.Init(Boolean nonDeterministicOutput, IList`1 libpaths) in /_/src/IKVM.Tools.Importer/StaticCompiler.cs:line 60
   at IKVM.Tools.Importer.IkvmImporterInternal.Compile(String[] args) in /_/src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 180
   at IKVM.Tools.Importer.IkvmImporterInternal.Execute(String[] args) in /_/src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 111

The jar is compiled with java 8.
Also, is there any alternative way to convert using Visual Studio.

wasabii · 2023-11-08T14:29:27Z

-r is for adding a reference to an assembly. I believe the input files have no argname.

Yes, there is copious documentation on using IkvmReference on the Readme

varratna · 2024-01-09T14:36:52Z

Hey @wasabii
I am trying out IKVM to convert jar to dll. I started with latest version IKVM-8.7.3-bin-net6.0.

I am trying to convert from the command line.
Command -> ikvmc -target:library hha-pricer-application-1.12.0.jar -out:hha-pricer-application-1.12.0.dll
Error ->

IKVM.Tools.Importer (8.7.3+Branch.tags-8.7.3.Sha.93a12b1dfa8e91459d36916cbdb2425e68643b03)
Copyright c 2023 Jeroen Frijters, Windward Studios, Jerome Haltom, Shad Storhaug

Error: core library not found

*** INTERNAL COMPILER ERROR ***

PLEASE FILE A BUG REPORT FOR IKVM.NET WHEN YOU SEE THIS MESSAGE

IKVM.Tools.Importer, Version=8.7.3.0, Culture=neutral, PublicKeyToken=13235d27fcbfff58
C:\Users\Lenovo\Downloads\IKVM-8.7.3-bin-net6.0\ikvmc\net6.0\win-x64
6.0.25 64-bit

System.IO.FileNotFoundException: System.Runtime
at IKVM.Reflection.Universe.Load(String refname, Module requestingModule, Boolean throwOnError) in //src/IKVM.Reflection/Universe.cs:line 564
at IKVM.Tools.Importer.AssemblyResolver.Init(Universe universe, Boolean nostdlib, IList1 references, IList1 userLibPaths) in //src/IKVM.Tools.Importer/AssemblyResolver.cs:line 84
at IKVM.Tools.Importer.IkvmImporterInternal.Compile(String[] args) in //src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 181
at IKVM.Tools.Importer.IkvmImporterInternal.Execute(String[] args) in //src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 111

The System.Runtime.dll is already present in IKVM-8.7.0-bin-net6.0\ikvmc\net6.0\win-x64 folder

Is there any other way to convert the jar to .dll seamlessly.

varratna · 2024-01-09T14:42:02Z

Hey @wasabii I am trying out IKVM to convert jar to dll. I started with ikvm-7.2 and later came across the latest version ikvm-8.7.0.

I am trying to convert from the command line. Command -> ikvmc -target:library -out:offlinepos.dll -r:offlinepos.jar Error ->

IKVM.Tools.Importer (8.7.0+Branch.tags-8.7.0.Sha.8fd37569453a3889205c22f1547e0609545cab4a)
Copyright © 2023 Jeroen Frijters, Windward Studios, Jerome Haltom, Shad Storhaug


*** INTERNAL COMPILER ERROR ***

PLEASE FILE A BUG REPORT FOR IKVM.NET WHEN YOU SEE THIS MESSAGE

IKVM.Tools.Importer, Version=8.7.0.0, Culture=neutral, PublicKeyToken=13235d27fcbfff58
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\
4.0.30319.42000 64-bit

System.InvalidOperationException: PE image does not have metadata.
   at System.Reflection.PortableExecutable.PEReader.GetMetadataBlock()
   at System.Reflection.Metadata.PEReaderExtensions.GetMetadataReader(PEReader peReader, MetadataReaderOptions options, MetadataStringDecoder utf8Decoder)
   at IKVM.Tools.Importer.StaticCompiler.GetAssemblyNameIfCoreLib(String path) in /_/src/IKVM.Tools.Importer/StaticCompiler.cs:line 101
   at IKVM.Tools.Importer.StaticCompiler.FindCoreLibName(IList`1 references, IList`1 libpaths) in /_/src/IKVM.Tools.Importer/StaticCompiler.cs:line 78
   at IKVM.Tools.Importer.StaticCompiler.Init(Boolean nonDeterministicOutput, IList`1 libpaths) in /_/src/IKVM.Tools.Importer/StaticCompiler.cs:line 60
   at IKVM.Tools.Importer.IkvmImporterInternal.Compile(String[] args) in /_/src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 180
   at IKVM.Tools.Importer.IkvmImporterInternal.Execute(String[] args) in /_/src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 111

The jar is compiled with java 8. Also, is there any alternative way to convert using Visual Studio.

Hey Did you get the solution for the issue you were facing

wasabii · 2024-01-09T15:29:03Z

@varratna

-r is for referencing the dependent .NET assemblies.

You've used it to reference a JAR file. So it is breaking saying it isn't a PE image with metadata (a .NET assembly).

We strongly recommend using IkvmReference or MavenReference.

varratna · 2024-01-09T16:31:38Z

Hey @wasabii
I am trying out IKVM to convert jar to dll. I started with latest version IKVM-8.7.3-bin-net6.0.

I am trying to convert from the command line.
Command -> ikvmc -target:library hha-pricer-application-1.12.0.jar -out:hha-pricer-application-1.12.0.dll
Error ->

IKVM.Tools.Importer (8.7.3+Branch.tags-8.7.3.Sha.93a12b1dfa8e91459d36916cbdb2425e68643b03)
Copyright c 2023 Jeroen Frijters, Windward Studios, Jerome Haltom, Shad Storhaug

Error: core library not found

*** INTERNAL COMPILER ERROR ***

PLEASE FILE A BUG REPORT FOR IKVM.NET WHEN YOU SEE THIS MESSAGE

IKVM.Tools.Importer, Version=8.7.3.0, Culture=neutral, PublicKeyToken=13235d27fcbfff58
C:\Users\Lenovo\Downloads\IKVM-8.7.3-bin-net6.0\ikvmc\net6.0\win-x64
6.0.25 64-bit

System.IO.FileNotFoundException: System.Runtime
at IKVM.Reflection.Universe.Load(String refname, Module requestingModule, Boolean throwOnError) in //src/IKVM.Reflection/Universe.cs:line 564
at IKVM.Tools.Importer.AssemblyResolver.Init(Universe universe, Boolean nostdlib, IList1 references, IList1 userLibPaths) in //src/IKVM.Tools.Importer/AssemblyResolver.cs:line 84
at IKVM.Tools.Importer.IkvmImporterInternal.Compile(String[] args) in //src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 181
at IKVM.Tools.Importer.IkvmImporterInternal.Execute(String[] args) in //src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 111

The System.Runtime.dll is already present in IKVM-8.7.0-bin-net6.0\ikvmc\net6.0\win-x64 folder

Is there any other way to convert the jar to .dll seamlessly.

wasabii · 2024-01-09T16:38:45Z

As I said, you should favor using IkvmReference or MavenReference.

Else, you will need to add a -r argument for every assembly that forms the reference assembly pack for runtime you are intending to target. For .NET Framework this will be all of the reference assemblies installed by the various targeting packs.

For Core, this will be all of the assemblies for the Microsoft.NETCore.App.Ref pack of the specific version of .NET Core you want to target.

varratna · 2024-01-09T17:47:18Z

Hi Jerome Haltom, Thanks for your reply . I shall try using IkvmReference or MavenReference. I just tried using the -r argument and execute the below command , but still it was giving me the same error. I was expecting an error but it should have referred to some other assembly from the Microsoft.NETCore.App\6.0.25 folder instead of System.Runtime.dll Am I doing something wrong , can you verify the below command. Command - ikvmc -reference:"C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.25\System.Runtime.dll" -out:hha-pricer-application-1.12.0.dll hha-pricer-application-1.12.0.jar Erorr - Error: core library not found *** INTERNAL COMPILER ERROR *** PLEASE FILE A BUG REPORT FOR IKVM.NET WHEN YOU SEE THIS MESSAGE IKVM.Tools.Importer, Version=8.7.3.0, Culture=neutral, PublicKeyToken=13235d27fcbfff58 C:\Users\Lenovo\Downloads\IKVM-8.7.3-bin-net6.0\ikvmc\net6.0\win-x64\ 6.0.25 64-bit System.IO.FileNotFoundException: System.Runtime at IKVM.Reflection.Universe.Load(String refname, Module requestingModule, Boolean throwOnError) in /_/src/IKVM.Reflection/Universe.cs:line 564 at IKVM.Tools.Importer.AssemblyResolver.Init(Universe universe, Boolean nostdlib, IList`1 references, IList`1 userLibPaths) in /_/src/IKVM.Tools.Importer/AssemblyResolver.cs:line 84 at IKVM.Tools.Importer.IkvmImporterInternal.Compile(String[] args) in /_/src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 181 at IKVM.Tools.Importer.IkvmImporterInternal.Execute(String[] args) in /_/src/IKVM.Tools.Importer/IkvmImporterInternal.cs:line 111 Appreciate your help! Thanks, varratna

…

________________________________ From: Jerome Haltom ***@***.***> Sent: Tuesday, January 9, 2024 10:08 PM To: ikvmnet/ikvm ***@***.***> Cc: varratna ***@***.***>; Mention ***@***.***> Subject: Re: [ikvmnet/ikvm] imvmc.exe errors when compiling a basic jar file (Issue #110) As I said, you should favor using IkvmReference or MavenReference. Else, you will need to add a -r argument for every assembly that forms the reference assembly pack for runtime you are intending to target. For .NET Framework this will be all of the reference assemblies installed by the various targeting packs. For Core, this will be all of the assemblies for the Microsoft.NETCore.App.Ref pack of the specific version of .NET Core you want to target. — Reply to this email directly, view it on GitHub<#110 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AO6IM3X7O5FEUOADY7BD5QLYNVXB7AVCNFSM53SS2JNKU5DIOJSWCZC7NNSXTN2JONZXKZKDN5WW2ZLOOQ5TCOBYGMZTSNBZHA4A>. You are receiving this because you were mentioned.

varratna · 2024-01-10T06:32:31Z

I get the below error , I added the <IkvmReference manually by editing the csproj , <IkvmReference tag should have auto populated while typing

varratna · 2024-01-11T05:53:59Z

It looks like no reference to .dll

varratna · 2024-01-11T11:57:12Z

Hi I am able to convert the java.jar file to .dll file I am trying to access the main class and create and object to call the respective methods but I am not able to get the namespace of the main class in the .dll It did not give any error or warning . I used the IKVM reference method. eg hha-pricer-application-1.12.0.jar\gov\cms\fiss\pricers\hha - my main class in java.jar - this namespace and class not accessible in .net (.dll) other folder structure hha-pricer-application-1.12.0.jar\com - these namespace and classes are accessible hha-pricer-application-1.12.0.jar\nonapi\io\github\classgraph - these namespace and classes are accessible <Project Sdk="Microsoft.NET.Sdk"> <PropertyGroup> <OutputType>Exe</OutputType> <TargetFramework>net6.0</TargetFramework> <ImplicitUsings>enable</ImplicitUsings> <Nullable>enable</Nullable> </PropertyGroup> <ItemGroup> <PackageReference Include="IKVM" Version="8.7.3" /> <PackageReference Include="IKVM.Image.JDK" Version="8.7.3" /> <PackageReference Include="IKVM.Image.JRE" Version="8.7.3" /> </ItemGroup> <ItemGroup> <IkvmReference Include=".\JarFile\hha-pricer-application-1.12.0.jar" /> </ItemGroup> </Project> can you help me out in this Thanks, varratna

…

________________________________ From: Jerome Haltom ***@***.***> Sent: Tuesday, January 9, 2024 10:08 PM To: ikvmnet/ikvm ***@***.***> Cc: varratna ***@***.***>; Mention ***@***.***> Subject: Re: [ikvmnet/ikvm] imvmc.exe errors when compiling a basic jar file (Issue #110) As I said, you should favor using IkvmReference or MavenReference. Else, you will need to add a -r argument for every assembly that forms the reference assembly pack for runtime you are intending to target. For .NET Framework this will be all of the reference assemblies installed by the various targeting packs. For Core, this will be all of the assemblies for the Microsoft.NETCore.App.Ref pack of the specific version of .NET Core you want to target. — Reply to this email directly, view it on GitHub<#110 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AO6IM3X7O5FEUOADY7BD5QLYNVXB7AVCNFSM53SS2JNKU5DIOJSWCZC7NNSXTN2JONZXKZKDN5WW2ZLOOQ5TCOBYGMZTSNBZHA4A>. You are receiving this because you were mentioned.Message ID: ***@***.***>

KevM changed the title ~~imvmc.exe errors when~~ imvmc.exe errors when compiling a basic jar file Jul 14, 2022

KevM mentioned this issue Jul 14, 2022

Find IKVM replacement KevM/tikaondotnet#113

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wasabii closed this as not planned Won't fix, can't repro, duplicate, stale Aug 21, 2022

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imvmc.exe errors when compiling a basic jar file #110

imvmc.exe errors when compiling a basic jar file #110

KevM commented Jul 14, 2022

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KevM commented Sep 3, 2022

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imvmc.exe errors when compiling a basic jar file #110

imvmc.exe errors when compiling a basic jar file #110

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KevM commented Jul 14, 2022

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