dhost's Introduction

DHost

Warning

Currently, Only .NET 5.0 or higher is supported.

A simple .NET native-host wrapper for C++

How to build

Summary

$ mkdir build
$ cd build
$ cmake -DNETHOST_RUNTIME_IDENTIFIER="linux-x64" -DNETHOST_RUNTIME_VERSION="8.0.3" ../
$ make # use what you configured with cmake

CMake Variables

Warning

Target platform not altered even if mismatched with NETHOST_RUNTIME_IDENTIFIER. To change target platform, Use cross-platform tools such as MINGW.

NETHOST_RUNTIME_IDENTIFIER : .NET RID (See Catalog)
NETHOST_RUNTIME_VERSION : .NET Runtime Version (See Version List)

How to use (Sample)

clr.csproj

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

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net8.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

</Project>

Program.cs

internal static class Program
{
	public static void Entry()
	{
		Console.WriteLine($"Hello from '{typeof(Program).AssemblyQualifiedName}'");
	}

	public static void Main()
	{
		// dummy
	}
}

main.cpp

Important

When specifying type, Assembly qualified name is required.

#include "library.h"

int main()
{
    DHost ctx("clr.runtimeconfig.json");

    if (!ctx.LoadAssembly("clr.dll"))
    {
        puts("asm");
        return -1;
    }

    const auto main = reinterpret_cast<void(*)()>(ctx.LoadMethod(
        "Program, clr, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null",
        "Entry",
        "System.Action, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e"));
    if (!main)
    {
        puts("fptr");
        return -1;
    }

    main();

    return 0;
}

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