Golang 编译成 DLL 文件

首先撰写 golang 程序 exportgo.go：

package main

import "C"
import "fmt"

//export PrintBye
func PrintBye() {
    fmt.Println("From DLL: Bye!")
}

//export Sum
func Sum(a int, b int) int {
    return a + b;
}

func main() {
    // Need a main function to make CGO compile package as C shared library
}

编译成 DLL 文件：

go build -buildmode=c-shared -o exportgo.dll exportgo.go

编译后得到 exportgo.dll 和 exportgo.h 两个文件。

参考 exportgo.h 文件中的函数定义，撰写 C# 文件 importgo.cs：

using System;
using System.Runtime.InteropServices;

namespace HelloWorld
{
    class Hello 
    {
        [DllImport("exportgo.dll", EntryPoint="PrintBye")]
        static extern void PrintBye();

        [DllImport("exportgo.dll", EntryPoint="Sum")]
        static extern int Sum(int a, int b);

        static void Main() 
        {
            Console.WriteLine("Hello World!");
            PrintBye();

            Console.WriteLine(Sum(33, 22));
        }
    }
}

编译 CS 文件得到 exe

csc importgo.cs

将 exe 和 dll 放在同一目录下，运行。

>importgo.exe

Hello World!
From DLL: Bye!
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