Building for .NET Standard 2.0

[erksch]

Hey there!

Since support for .NET Standard was merged, I tried to build the dlls for .NET standard:

git clone git@github.com:ikvm-revived/ikvm.git
cd ikvm
dotnet build /p:TargetFrameworks=netstandard2.0

I got the build command from the pull request discussion.

However I am getting the following error:

$ dotnet build /p:TargetFrameworks=netstandard2.0
Microsoft (R) Build Engine version 16.3.0+0f4c62fea for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Restore completed in 280.75 ms for C:\Users\erikz\Projects\ikvm\ikvmstub\ikvmstub.csproj.
  Restore completed in 280.73 ms for C:\Users\erikz\Projects\ikvm\jvm\jvm.csproj.
  Restore completed in 280.66 ms for C:\Users\erikz\Projects\ikvm\awt\IKVM.AWT.WinForms.FirstPass\IKVM.AWT.WinForms.FirstPass.csproj.
  Restore completed in 280.78 ms for C:\Users\erikz\Projects\ikvm\reflect\IKVM.Reflection.csproj.
  Restore completed in 280.78 ms for C:\Users\erikz\Projects\ikvm\openjdk\openjdk.csproj.
  Restore completed in 280.78 ms for C:\Users\erikz\Projects\ikvm\ikvmc\ikvmc.csproj.
  Restore completed in 280.72 ms for C:\Users\erikz\Projects\ikvm\awt\IKVM.AWT.WinForms\IKVM.AWT.WinForms.csproj.
  Restore completed in 280.78 ms for C:\Users\erikz\Projects\ikvm\ikvm\ikvm.csproj.
  Restore completed in 13.17 ms for C:\Users\erikz\Projects\ikvm\tools\SourceLicenseAnalyzer\SourceLicenseAnalyzer.csproj.
  Restore completed in 20.99 ms for C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.JNI\IKVM.Runtime.JNI.csproj.
  Restore completed in 39.09 ms for C:\Users\erikz\Projects\ikvm\tools\depcheck\depcheck.csproj.
  Restore completed in 77.87 ms for C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj.
  Restore completed in 69.72 ms for C:\Users\erikz\Projects\ikvm\tools\implib\implib.csproj.
  Restore completed in 84.11 ms for C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\IKVM.Runtime.csproj.
  Restore completed in 76.36 ms for C:\Users\erikz\Projects\ikvm\runtime\DummyLibrary\DummyLibrary.csproj.
  Restore completed in 19.91 ms for C:\Users\erikz\Projects\ikvm\tools\pubkey\pubkey.csproj.
  Restore completed in 44.82 ms for C:\Users\erikz\Projects\ikvm\tools\updbaseaddresses\updbaseaddresses.csproj.
  updbaseaddresses -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netstandard2.0\updbaseaddresses.dll
  depcheck -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netstandard2.0\depcheck.dll
  pubkey -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netstandard2.0\pubkey.dll
  SourceLicenseAnalyzer -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netstandard2.0\SourceLicenseAnalyzer.dll
  IKVM.Reflection -> C:\Users\erikz\Projects\ikvm\bin\Debug\netstandard2.0\IKVM.Reflection.dll
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\tracer.cs(100,10): error CS0246: The type or namespace name 'ConfigurationException' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\ikvmstub\ikvmstub.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\TypeWrapper.cs(2070,34): error CS0246: The type or namespace name 'ArgIterator' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\ikvmstub\ikvmstub.csproj]
  implib -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netstandard2.0\implib.dll

Build FAILED.

C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\tracer.cs(100,10): error CS0246: The type or namespace name 'ConfigurationException' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\ikvmstub\ikvmstub.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\TypeWrapper.cs(2070,34): error CS0246: The type or namespace name 'ArgIterator' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\ikvmstub\ikvmstub.csproj]
    0 Warning(s)
    2 Error(s)

Any ideas?

[NightOwl888]

Hello. We do not currently have a viable build on .NET Standard.

So far, in #17 we have integrated the build tool chain for the .NET Core SDK. However, the IKVM compiler still isn't yet functional on .NET Standard. The main issue is that we need some mechanism in place to decide when to reference specific platform extensions when outputting the built assemblies.

The branch mentioned here is still experimental, but has gotten a little further along in the process than what is here. It sounds like a reasonable approach is being followed there, building with .NET Core 3.1 command line utilities and outputting .NET Standard 2.0 assemblies.

[klokedm]

Just a short correction of the above: I plan to provide a longer update later, but the output is actually .NET Standard 2.1.

IKVM utilizes the interop emiti call that is actually used for at least the Java stream API and there is no CLR support for that before the netstadard 2.1; based on my current research I do not believe IKVM will be possible on .NET Standard before that without a significant rework of the dynamic class loader.

@erksch - I am planning on providing a new commit later today that should hopefully allow you to build & test IKVM on .NET Core App 3.1 without too much pain, would be glad to hear if you manage to get it working.

[NightOwl888]

@klokedm - Thanks for the correction and the update.

Just out of curiosity, is it just a single API that is missing to get us on .NET Standard 2.0? Could you post a link to the docs for it?

I have managed to work around some of the missing .NET Standard 2.0 APIs by back-porting from .NET Standard 2.1 to .NET Standard 2.0, and it would be interesting to find out whether this is an option in our case.

[klokedm]

@NightOwl888 - sure.

I did some research already and unfortunately it does not seem to be surface issue; the support has been removed from the CLR altogether and needed to be ported back as far as I understand. See this: dotnet/runtime#17751 - see specifically this comment: dotnet/runtime#17751 (comment)

As a side note, another issue is the missing CreateType method, but I think this one should be easier to solve as CreateTypeInfo exists and based on a quick review of the usage pattern we could use it with a little bit of rework.

[erksch]

Glad to see all the movement about netstandard :D

I also tried building for .NET Core 3.1 but got these errors.

$ dotnet build /p:TargetFrameworks=netcoreapp3.1
Microsoft (R) Build Engine version 16.6.0+5ff7b0c9e for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

Determining projects to restore...
Restored C:\Users\erikz\Projects\ikvm\tools\depcheck\depcheck.csproj (in 748 ms).
Restored C:\Users\erikz\Projects\ikvm\tools\pubkey\pubkey.csproj (in 748 ms).
Restored C:\Users\erikz\Projects\ikvm\awt\IKVM.AWT.WinForms.FirstPass\IKVM.AWT.WinForms.FirstPass.csproj (in 747 ms).
Restored C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.JNI\IKVM.Runtime.JNI.csproj (in 747 ms).
Restored C:\Users\erikz\Projects\ikvm\ikvm\ikvm.csproj (in 813 ms).
Restored C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj (in 812 ms).
Restored C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\IKVM.Runtime.csproj (in 813 ms).
Restored C:\Users\erikz\Projects\ikvm\jvm\jvm.csproj (in 811 ms).
Restored C:\Users\erikz\Projects\ikvm\openjdk\openjdk.tools.csproj (in 13 ms).
Restored C:\Users\erikz\Projects\ikvm\awt\IKVM.AWT.WinForms\IKVM.AWT.WinForms.csproj (in 27 ms).
Restored C:\Users\erikz\Projects\ikvm\runtime\DummyLibrary\DummyLibrary.csproj (in 28 ms).
Restored C:\Users\erikz\Projects\ikvm\tools\SourceLicenseAnalyzer\SourceLicenseAnalyzer.csproj (in 37 ms).
Restored C:\Users\erikz\Projects\ikvm\reflect\IKVM.Reflection.csproj (in 58 ms).
Restored C:\Users\erikz\Projects\ikvm\tools\updbaseaddresses\updbaseaddresses.csproj (in 44 ms).
Restored C:\Users\erikz\Projects\ikvm\tools\implib\implib.csproj (in 49 ms).
Restored C:\Users\erikz\Projects\ikvm\ikvmc\ikvmc.csproj (in 85 ms).
Restored C:\Users\erikz\Projects\ikvm\ikvmstub\ikvmstub.csproj (in 162 ms).
updbaseaddresses -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netcoreapp3.1\updbaseaddresses.dll
depcheck -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netcoreapp3.1\depcheck.dll
pubkey -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netcoreapp3.1\pubkey.dll
SourceLicenseAnalyzer -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netcoreapp3.1\SourceLicenseAnalyzer.dll
IKVM.Reflection -> C:\Users\erikz\Projects\ikvm\bin\Debug\netcoreapp3.1\IKVM.Reflection.dll
implib -> C:\Users\erikz\Projects\ikvm\tools\bin\Debug\netcoreapp3.1\implib.dll
ikvmstub -> C:\Users\erikz\Projects\ikvm\bin\Debug\netcoreapp3.1\ikvmstub.dll
DummyLibrary -> C:\Users\erikz\Projects\ikvm\runtime\bin\Debug\netcoreapp3.1\IKVM.OpenJDK.Core.dll
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(5752,6): warning CS0618: 'SecurityTreatAsSafeAttribute' is obsolete: 'SecurityTreatAsSafe is only used for .NET 2.0 transparency compatibility.  Please use the SecuritySafeCriticalAttribute instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(5777,6): warning CS0618: 'SecurityTreatAsSafeAttribute' is obsolete: 'SecurityTreatAsSafe is only used for .NET 2.0 transparency compatibility.  Please use the SecuritySafeCriticalAttribute instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.util.cs(50,13): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.util.cs(61,11): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.io.cs(135,42): error CS0103: The name 'FileSystemRights' does not exist in the current context [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.io.cs(135,95): error CS1503: Argument 6: cannot convert from 'System.IO.FileOptions' to 'bool' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.util.cs(326,17): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.io.cs(1100,11): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.io.cs(1105,10): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\CodeEmitter.cs(94,11): error CS1061: 'LocalBuilder' does not contain a definition for 'SetLocalSymInfo' and no accessible extension method 'SetLocalSymInfo' accepting a first argument of type 'LocalBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\CodeEmitter.cs(502,17): error CS1061: 'ILGenerator' does not contain a definition for 'MarkSequencePoint' and no accessible extension method 'MarkSequencePoint' accepting a first argument of type 'ILGenerator' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(435,7): error CS1061: 'AssemblyBuilder' does not contain a definition for 'Save' and no accessible extension method 'Save' accepting a first argument of type 'AssemblyBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(442,80): error CS0117: 'AssemblyBuilderAccess' does not contain a definition for 'RunAndSave' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(443,35): error CS1501: No overload for method 'DefineDynamicModule' takes 2 arguments [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(563,36): error CS0117: 'AssemblyBuilderAccess' does not contain a definition for 'RunAndSave' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(588,73): error CS1501: No overload for method 'DefineDynamicModule' takes 3 arguments [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(588,149): error CS1501: No overload for method 'DefineDynamicModule' takes 2 arguments [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(598,35): error CS1061: 'AppDomain' does not contain a definition for 'DefineDynamicAssembly' and no accessible extension method 'DefineDynamicAssembly' accepting a first argument of type 'AppDomain' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(7024,17): error CS1061: 'MethodBuilder' does not contain a definition for 'GetToken' and no accessible extension method 'GetToken' accepting a first argument of type 'MethodBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DotNetTypeWrapper.cs(1464,11): error CS1061: 'TypeBuilder' does not contain a definition for 'AddDeclarativeSecurity' and no accessible extension method 'AddDeclarativeSecurity' accepting a first argument of type 'TypeBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DotNetTypeWrapper.cs(1486,11): error CS1061: 'MethodBuilder' does not contain a definition for 'AddDeclarativeSecurity' and no accessible extension method 'AddDeclarativeSecurity' accepting a first argument of type 'MethodBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(5759,11): warning CS0612: 'SecurityManager.IsGranted(IPermission)' is obsolete [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(5760,8): warning CS0612: 'SecurityManager.IsGranted(IPermission)' is obsolete [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\CodeEmitter.cs(2371,21): error CS1061: 'ModuleBuilder' does not contain a definition for 'DefineDocument' and no accessible extension method 'DefineDocument' accepting a first argument of type 'ModuleBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\MemberWrapper.cs(1555,39): error CS1061: 'FieldBuilder' does not contain a definition for 'GetToken' and no accessible extension method 'GetToken' accepting a first argument of type 'FieldBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\Serialization.cs(173,18): error CS1061: 'MethodBuilder' does not contain a definition for 'AddDeclarativeSecurity' and no accessible extension method 'AddDeclarativeSecurity' accepting a first argument of type 'MethodBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\Serialization.cs(190,9): error CS1061: 'MethodBuilder' does not contain a definition for 'AddDeclarativeSecurity' and no accessible extension method 'AddDeclarativeSecurity' accepting a first argument of type 'MethodBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]

Build FAILED.

C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(5752,6): warning CS0618: 'SecurityTreatAsSafeAttribute' is obsolete: 'SecurityTreatAsSafe is only used for .NET 2.0 transparency compatibility.  Please use the SecuritySafeCriticalAttribute instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(5777,6): warning CS0618: 'SecurityTreatAsSafeAttribute' is obsolete: 'SecurityTreatAsSafe is only used for .NET 2.0 transparency compatibility.  Please use the SecuritySafeCriticalAttribute instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.util.cs(50,13): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.util.cs(61,11): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.util.cs(326,17): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.io.cs(1100,11): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.io.cs(1105,10): warning CS0618: 'TimeZone' is obsolete: 'System.TimeZone has been deprecated.  Please investigate the use of System.TimeZoneInfo instead.' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(5759,11): warning CS0612: 'SecurityManager.IsGranted(IPermission)' is obsolete [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(5760,8): warning CS0612: 'SecurityManager.IsGranted(IPermission)' is obsolete [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.io.cs(135,42): error CS0103: The name 'FileSystemRights' does not exist in the current context [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\openjdk\java.io.cs(135,95): error CS1503: Argument 6: cannot convert from 'System.IO.FileOptions' to 'bool' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\CodeEmitter.cs(94,11): error CS1061: 'LocalBuilder' does not contain a definition for 'SetLocalSymInfo' and no accessible extension method 'SetLocalSymInfo' accepting a first argument of type 'LocalBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\CodeEmitter.cs(502,17): error CS1061: 'ILGenerator' does not contain a definition for 'MarkSequencePoint' and no accessible extension method 'MarkSequencePoint' accepting a first argument of type 'ILGenerator' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(435,7): error CS1061: 'AssemblyBuilder' does not contain a definition for 'Save' and no accessible extension method 'Save' accepting a first argument of type 'AssemblyBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(442,80): error CS0117: 'AssemblyBuilderAccess' does not contain a definition for 'RunAndSave' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(443,35): error CS1501: No overload for method 'DefineDynamicModule' takes 2 arguments [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(563,36): error CS0117: 'AssemblyBuilderAccess' does not contain a definition for 'RunAndSave' [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(588,73): error CS1501: No overload for method 'DefineDynamicModule' takes 3 arguments [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(588,149): error CS1501: No overload for method 'DefineDynamicModule' takes 2 arguments [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicClassLoader.cs(598,35): error CS1061: 'AppDomain' does not contain a definition for 'DefineDynamicAssembly' and no accessible extension method 'DefineDynamicAssembly' accepting a first argument of type 'AppDomain' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DynamicTypeWrapper.cs(7024,17): error CS1061: 'MethodBuilder' does not contain a definition for 'GetToken' and no accessible extension method 'GetToken' accepting a first argument of type 'MethodBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DotNetTypeWrapper.cs(1464,11): error CS1061: 'TypeBuilder' does not contain a definition for 'AddDeclarativeSecurity' and no accessible extension method 'AddDeclarativeSecurity' accepting a first argument of type 'TypeBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\DotNetTypeWrapper.cs(1486,11): error CS1061: 'MethodBuilder' does not contain a definition for 'AddDeclarativeSecurity' and no accessible extension method 'AddDeclarativeSecurity' accepting a first argument of type 'MethodBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\CodeEmitter.cs(2371,21): error CS1061: 'ModuleBuilder' does not contain a definition for 'DefineDocument' and no accessible extension method 'DefineDocument' accepting a first argument of type 'ModuleBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\MemberWrapper.cs(1555,39): error CS1061: 'FieldBuilder' does not contain a definition for 'GetToken' and no accessible extension method 'GetToken' accepting a first argument of type 'FieldBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\Serialization.cs(173,18): error CS1061: 'MethodBuilder' does not contain a definition for 'AddDeclarativeSecurity' and no accessible extension method 'AddDeclarativeSecurity' accepting a first argument of type 'MethodBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime\Serialization.cs(190,9): error CS1061: 'MethodBuilder' does not contain a definition for 'AddDeclarativeSecurity' and no accessible extension method 'AddDeclarativeSecurity' accepting a first argument of type 'MethodBuilder' could be found (are you missing a using directive or an assembly reference?) [C:\Users\erikz\Projects\ikvm\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj]
  9 Warning(s)
  18 Error(s)

[NightOwl888]

@klokedm

It appears this EmitCalli overload (with 1 additional parameter) is available on .NET Standard 2.0 through System.Reflection.Emit.ILGeneration. Is there a way to make this overload work for us?

public virtual void EmitCalli(OpCode opcode, CallingConventions callingConvention, Type? returnType, [NullableAttribute(new[] { 2, 1 })] Type[]? parameterTypes, [NullableAttribute(new[] { 2, 1 })] Type[]? optionalParameterTypes)

Failing that, I also discovered the mscorlib source that might be useful. But no doubt this terminates somewhere in C/C++ and ultimately that is what likely needs to be salvaged to get it working.

[klokedm]

@erksch - are you building from the correct repo? :) - the .NET Standard work is currently in the master branch here: https://github.com/klokedm/ikvm. I suggest you wait about 30 minutes, I am pushing a rather large update that should make your life in trying to build it a lot easier.

@NightOwl888 - basically there are two overloads: one for managed and one for unmanaged code. The JDK8 introduced native streams which require unmanaged calls and this - unfortunatelly - is the missing API as far as I understand (please note I have done limited research on this up to the point).

So my understanding is that in order to emit an unmanaged call we need the support that was introduced in .NET Standard 2.1. I am a bit cautious about it for the reason that the official release provided a patch in the new version but did not provide a poly-fill for 2.0, which probably means there is an implementation detail somewhere that required updates in multiple places. Given we are talking about managed vs unmanaged code that would seem like a likely scenario, but as said - very limited research done by me up to the point.

[klokedm]

@erksch I have pushed some of the latest update to the upstream repo. I have also included the "TestBuild.bat" script in the root folder which will runt the build commands in the correct order.

This should allow you to build the OpenJDK DLLs and the toolset and you can then try running the ikvc against your jar / java classes.

I have temporarily disabled the AWT as it needs to target a different framework and this causes a bit of a DLL hell in resolving assembly versions.

Also note that building the VM in the end still fails, I have not yet come around to fixing it.

[erksch]

@klokedm Thanks for the quick update!

It fails again due to the missing ConfigurationManager reference in ikvmstub.csproj.
Currently in your master, the references in ikvmstub.csproj look like this:

  <ItemGroup Condition="'$(TargetFramework)'=='netcoreapp3.1'">
    <PackageReference Include="System.Configuration.ConfigurationManager" Version="4.7.0" />
  </ItemGroup>

The condition has to be extended for the netstandard case.

[klokedm]

@erksch - yes, the build scripts are - suboptimal, if I am to be polite to myself at the moment. :)

For starter, I would suggest you use the TestBuild.bat command, there is no /p:TargetFramework required in this branch as net461 has been removed. But in order for the compiler to get the reference DLLs in the right place (for the assumptions currently hardcoded), the ikvmc needs to be build & packaged before the solution can be built.

I will work on cleaning this up a little bit shortly.

[erksch]

Okay got it thanks! I will use the TestBuild.bat and see how far I can get :D

[klokedm]

@NightOwl888 - I've taken a look at the source you've located and I am now a bit more optimistic than I was before. :)

On first sight I cannot find anything very problematic, I'll checkout the appropriate source code and take a more detailed look later.

[igorkwwrd]

Well, I just made a debug build by running 'dotnet build' (in klokedm repository).

I had to make a few minor fixes for the build to work. Mainly update reference paths (publish\refs => refs), manually copy some of .NET assemblies to Debug\refs.

[nkarthik31]

@igorkwwrd which assemblies do you copied? I am getting below error while doing 'dotnet build'

C:\Users\m1055762\Downloads\ikvm-master (1)\ikvm-master\runtime\IKVM.Runtime.FirstPass\IKVM.Runtime.FirstPass.csproj(54,5): error MSB3073: The command "..\..\bin\Debug\netcoreapp3.1\ikvmstub.exe -bootstrap IKVM.Runtime.dll -r:..\bin\Debug\netstandard2.1\IKVM.OpenJDK.Core.dll" exited with code -532462766. 33 Warning(s) 1 Error(s)