GCC 4.4.3编译器链接问题

GCC 4.4.3 compiler linking issue

本文关键字：问题 链接 GCC 编译器      更新时间：2023-10-16

好的，所以我试图回到c++，并从一个基本的程序开始。

#include <iostream>
using namespace std;
int main()
{
 cout << "So This Is It.";
 cout << "n";
 return 0;
}

结果如下:

-->gcc -g -o HELLO HELLO.cpp
/tmp/ccLZLm5N.o: In function `main':
/root/Programming/Learning/C++/HELLO.cpp:9: undefined reference to `std::cout'
/root/Programming/Learning/C++/HELLO.cpp:9: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/root/Programming/Learning/C++/HELLO.cpp:10: undefined reference to `std::cout'
/root/Programming/Learning/C++/HELLO.cpp:10: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccLZLm5N.o: In function `__static_initialization_and_destruction_0':
/usr/include/c++/4.4/iostream:72: undefined reference to `std::ios_base::Init::Init()'
/usr/include/c++/4.4/iostream:72: undefined reference to `std::ios_base::Init::~Init()'
/tmp/ccLZLm5N.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status

我的编译器:

-->gcc --version
gcc (Ubuntu 4.4.3-4ubuntu5.1) 4.4.3
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

所以我能得到一些关于修复的信息吗?或。如果我遇到任何更简单的语法问题，我如何找到正确的信息?

您使用的是C编译器而不是C++编译器。gcc代表C, g++代表c++。GCC的链接器将链接到C标准库，该标准库不包含c++标准库提供的函数，这将导致未定义的引用。

所以使用正确的g++:

g++ -g -o HELLO HELLO.cpp

附加备注:

通常gcc标识一个c++源代码。然而，如果你没有自己安装g++，很可能你的Ubuntu安装中没有安装它。要么让你的主管安装g++，要么自己安装g++:

sudu apt-get install g++

因为你已经在安装东西了，所以获取gdb和valgrind用于调试。

相关文章：