如何在同一项目中调用C层的C++函数？

// example.cpp
#include <iostream>

extern "C" {
    void cFunction() {
        std::cout << "This is a C++ function called from C." << std::endl;
    }
}

g++ -shared -o example.so example.cpp

g++ -shared -o example.dll example.cpp

// example.c
#include <stdio.h>
#include <dlfcn.h>

typedef void (*CFunction)();

int main() {
    void* handle = dlopen("./example.so", RTLD_LAZY);
    if (handle == NULL) {
        printf("Failed to load the dynamic library.\n");
        return 1;
    }

    CFunction cFunc = (CFunction)dlsym(handle, "cFunction");
    if (cFunc == NULL) {
        printf("Failed to find the C++ function.\n");
        dlclose(handle);
        return 1;
    }

    cFunc();

    dlclose(handle);
    return 0;
}

gcc -o example example.c -ldl

gcc -o example example.c -L. -lexample

./example