System.DllNotFoundException:无法使用 dotnet 核心加载 DLL [英] System.DllNotFoundException: Unable to load DLL with dotnet core

问题描述

我的任务是从 linux 上的 dotnet 核心调用 openzwave，但我在 dotnet 核心加载我的 C++ 库时遇到了问题.基本上每当我接触 openzwave 库时，我都会收到一个 dll not found 异常.这是我的 program.cs

I've been tasked with calling openzwave from dotnet core on linux and i'm having issues with dotnet core loading my c++ library. Essentially any time i touch the openzwave library I get a dll not found exception. here's my program.cs

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Runtime.InteropServices;
    using System.Threading.Tasks;

    namespace MinOZWDotNet
    {
        public class Program
        {

            [DllImport("MinOZW")]
            public static extern int Init();

            [DllImport("MinOZW")]
            public static extern int Free();

            public static void Main(string[] args)
            {
                Console.WriteLine("Calling Init");
                var val= Init();
                Console.WriteLine($"retval= {val}");

                while (true)
                {

                    if (Console.KeyAvailable)
                    {

                        ConsoleKeyInfo key = Console.ReadKey();

                        if (key.Key == ConsoleKey.Escape)
                        {
                            Console.WriteLine("Exit");
                            break;
                        }
                    }
                }

                Console.WriteLine("Calling Free");
                val = Free();
                Console.WriteLine($"retval = {val}");

            }
        }
    }

这是 .so 的一个版本

heres a version of the .so which works

#ifdef __GNUC__
        #define EXPORT extern "C"
        #define CC
#else
        #define EXPORT extern "C" __declspec (dllexport)
        #define CC __stdcall
#endif

#ifdef __GNUC__

#include <stdlib.h>
#include <unistd.h>

#include "Defs.h"

#else

#include "Windows.h"

#endif



EXPORT int CC Init() {

        return 0;
}

EXPORT int CC Free() {

        return 0;
}

这是给我错误的版本

#ifdef __GNUC__
        #define EXPORT extern "C"
        #define CC
#else
        #define EXPORT extern "C" __declspec (dllexport)
        #define CC __stdcall
#endif

#ifdef __GNUC__

#include <stdlib.h>
#include <unistd.h>

#include "Defs.h"

#else

#include "Windows.h"

#endif


#include "Options.h"
#include "Manager.h"
#include "Driver.h"
#include "Node.h"
#include "Group.h"
#include "Notification.h"
#include "value_classes/ValueStore.h"
#include "value_classes/Value.h"
#include "value_classes/ValueBool.h"
#include "platform/Log.h"

using namespace OpenZWave;


EXPORT int CC Init() {
        Manager::Create();
        return 0;
}

EXPORT int CC Free() {
        Manager::Destroy();
        return 0;
}

openzwave 和这个库都在预期的路径上.注意，在 Windows 上编译时，这一切正常.github上的openZwave

both openzwave and this lib are on the expected path. N.B when compiled on windows this all works. openZwave on github

推荐答案

您是否尝试过在 C 程序中使用您的 lib?也许 OpenZWave 有一些在 linux 上缺少的依赖项...

Have you tried to use your lib inside a C program? Maybe that OpenZWave has some dependencies that are missing on linux...

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