C++ 链接错误“对`__gxx_personality_v0'的未定义引用”和g++
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Link error "undefined reference to `__gxx_personality_v0'" and g++
提问by develhevel
Possible Duplicate:
Undefined Symbol ___gxx_personality_v0 on link
I have a problem with the following program.
我对以下程序有问题。
// fkt.cpp
#include "fkt.h"
int add2(int a, int b)
{
return a+b;
}
And the header:
和标题：
// fkt.h
int add2(int a, int b);
Now I compile this with:
现在我编译这个：
g++ -c fkt.cpp
Now I run nmand get:
现在我运行nm并得到：
00000000 T _Z6add2ii
U __gxx_personality_v0
When I want to use the function anywhere I get:
当我想在任何地方使用该功能时：
(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'
How can I solve this problem? (I'm using UbuntuLinux.)
我怎么解决这个问题？（我使用的是UbuntuLinux。）
回答by phoxis
If g++still gives error Try using:
如果g++仍然给出错误尝试使用：
g++ file.c -lstdc++
Look at this post: What is __gxx_personality_v0 for?
看看这个帖子：__gxx_personality_v0 是什么？
Make sure -lstdc++is at the end of the command. If you place it at the beginning (i.e. before file.c), you still can get this same error.
确保-lstdc++在命令的末尾。如果你把它放在开头（即在 file.c 之前），你仍然会得到同样的错误。
回答by onteria_
It sounds like you're trying to link with your resulting object file with gccinstead of g++:
听起来您正在尝试使用gcc而不是与生成的目标文件链接g++：
Note that programs using C++ object files must always be linked with g++, in order to supply the appropriate C++ libraries. Attempting to link a C++ object file with the C compiler gcc will cause "undefined reference" errors for C++ standard library functions:
请注意，使用 C++ 目标文件的程序必须始终与 g++ 链接，以便提供适当的 C++ 库。尝试将 C++ 对象文件与 C 编译器 gcc 链接将导致 C++ 标准库函数的“未定义引用”错误：
$ g++ -Wall -c hello.cc
$ gcc hello.o (should use g++)
hello.o: In function `main':
hello.o(.text+0x1b): undefined reference to `std::cout'
.....
hello.o(.eh_frame+0x11):
undefined reference to `__gxx_personality_v0'
Source: An Introduction to GCC - for the GNU compilers gcc and g++
