動的ライブラリのロード方法

#include <iostream>
#include <functional>

#include <Windows.h>

int main() {
    HMODULE hModule = LoadLibraryA("MyDLL.dll");

    FARPROC func = GetProcAddress(hModule, "add");

    std::function<int(int, int)> add_func = reinterpret_cast<int(*)(int, int)>(func);
    int result = add_func(3, 5);

    std::cout << "result: " << result << std::endl;

    FreeLibrary(hModule);

    return 0;
}

extern "C" {

    int add(int a, int b) {

        return a + b;

    }

}

#include <iostream>

#include <functional>

#include <dlfcn.h>



int main(){

  void* handle = dlopen("./mylib.so",RTLD_LAZY);

  using add_func_ptr = int (*)(int,int);

  std::function<int(int,int)> add_func =(add_func_ptr)dlsym(handle,"add");

  int result = add_func(3,5);

  std::cout << "result:" << result << std::endl;


  dlclose(handle);

}