使用MinGW编译器时出现链接错误(找不到__main) [英] Link error while using MinGW compiler (can't find __main)

问题描述

我正在尝试使用Windows上的MinGW编译一个非常简单的程序，但仍然出现链接错误.要编译的程序只是C ++的hello world.

I'm trying to compile a very simple program with MinGW on Windows, but I still got link errors. The program to be compiled is just C++ hello world.

Z:\dev>type test.cpp
#include <iostream>

int main() {
  std::cout << "Hello World!\n";
  return 0;
}

当然，仅使用MinGW的g ++即可.

Of course, just using MinGW's g++ is okay.

Z:\dev>g++ test.cpp -o test.exe
Z:\dev>test.exe
Hello World!

但是，我尝试将编译和链接分开，但是失败了.

However, I tried to separate compilation and linking, but failed.

Z:\dev>g++ -c test.cpp -o test.o

Z:\dev>ld test.o -o test.exe
test.o:test.cpp:(.text+0xa): undefined reference to `__main'
test.o:test.cpp:(.text+0x19): undefined reference to `std::cout'
test.o:test.cpp:(.text+0x1e): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& s
 <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
test.o:test.cpp:(.text+0x37): undefined reference to `std::ios_base::Init::~Init()'
test.o:test.cpp:(.text+0x5a): undefined reference to `std::ios_base::Init::Init()'
test.o:test.cpp:(.text+0x66): undefined reference to `atexit'

很明显，我错过了一些图书馆.因此，我尝试与几个MinGW的库进行链接，但-lmsvcrt这样的库还是不好用.我也做了lstdc++，但是仍然找不到__main和大量警告消息.

It is obvious that I've missed some libraries. So, I tried to link with several MinGW's libraries, but still no good such as -lmsvcrt. I also did lstdc++, but still __main cannot be found and tons of warning messages.

您能帮助我将哪些库链接在一起吗?

Could you help me out which libraries should be linked together?

推荐答案

而不是使用ld，请尝试使用g++进行链接.

Instead of using ld, try using g++ to link.

尝试一下:

Z:\dev> g++ -c test.cpp -o test.o
Z:\dev> g++ -o test.exe test.o

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