我将以下代码从a previous question剪切并粘贴到一个名为“avishay.cpp”的文件中,然后运行
gcc avishay.cpp
仅从链接器获取以下错误消息。出了什么问题,我该怎么办?
carl@carl-ubuntu:~/Projects/StackOverflow$ gcc -static avishay.cpp
/tmp/cccRNW34.o: In function `__static_initialization_and_destruction_0(int, int)':
avishay.cpp:(.text+0x41): undefined reference to `std::ios_base::Init::Init()'
avishay.cpp:(.text+0x46): undefined reference to `std::ios_base::Init::~Init()'
/tmp/cccRNW34.o: In function `A::func()':
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x11): undefined reference to `std::cout'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x16): 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*)'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x1e): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x26): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x36): undefined reference to `std::cout'
avishay.cpp:(.text._ZN1A4funcEv[A::func()]+0x3b): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(int)'
/tmp/cccRNW34.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
C++代码(不是我的代码,我只是尝试运行它):
#include <iostream>
using namespace std;
class A
{
private:
int _dmember;
public:
void func()
{
cout<<"Inside A!! "<<endl;
cout<<_dmember; // crash when reach here.
}
};
int main ()
{
A* a= NULL;
a->func(); // prints "Inside A!!!"
return 1;
}
最佳答案
您应该使用g++
而不是gcc
来编译C++程序。
对于这个特定的程序,我刚刚输入
make avishay
然后让
make
找出其余的。也为可执行文件提供一个体面的名称,而不是a.out
。关于c++ - 如何在Ubuntu Linux下编译C++?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/1696300/