ld：未找到-lgcc_ext.10.5的库 [英] ld: library not found for -lgcc_ext.10.5

问题描述

我试图为学校编译一个基本的C ++程序，当我尝试从Mac终端（10.7.6）运行它，我收到这个消息：

  ld：库找不到-lgcc_ext.10.5 
 collect2：错误：ld返回1退出状态
  

我肯定在正确的目录中，并安装了XCode Command Line工具。这是我的命令提示符：

  g ++ -o chapter_2 hello_world.cpp 
  pre> 
 
 
这是我的基本c ++程序。
  #include< ; iostream> 
 
 using namespace std; 
 
 int main（）{
 
 cout<< Hello world<< endl; 
 
} 
  
 
 
解决方案
 
 
 
 
当我检查 $ which g ++ 它给了 / usr / local / bin / g ++ 。
 
 
 
 c $ c> .bash_profile ：
  #PATH =/ usr / local / bin：$ {PATH}
  
现在 $ which g ++ 给出 / usr / bin / g ++ ，其版本表示它来自XCode，没有找到 ld：library -lgcc_ext.10.5 错误。
 
I'm trying to compile a basic C++ program for school and when I try running it from the Mac Terminal (10.7.6), I get this message: 
ld: library not found for -lgcc_ext.10.5
collect2: error: ld returned 1 exit status
I'm definitely in the correct directory and installed XCode Command Line tools. Here is my command prompt:
g++ -o chapter_2 hello_world.cpp
Here is my basic c++ program.
#include <iostream>

using namespace std;

int main(){

  cout << "Hello world" << endl;

}

解决方案
I had the same problem, on OS X 10.8, with both current XCode and gcc installed by Homebrew.

When I checked $ which g++ it gave /usr/local/bin/g++.

So I commented this path in .bash_profile:
#PATH="/usr/local/bin:${PATH}"
Now $ which g++ gives /usr/bin/g++ and its version indicates that it is from XCode and there is no ld: library not found for -lgcc_ext.10.5 error.

                        
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