g ++ 4.8.1 C ++ Threads，std :: system_error - 不允许操作？ [英] g++ 4.8.1 C++ Threads, std::system_error - operation not permitted?

问题描述

这不是一个重复的问题，因为提出的解决方案不工作我的编译器。我试图编译并运行以下示例

  #include< thread> 
 #include< iostream> 
 
 int main（int，char **）{
 std :: thread tt（[]（）{std :: cout<<Thread！< std： ：endl;}）; 
 tt.join（）; 
} 
  

我试图使用原始问题中提供的解决方案，已接受的此重复答案。但是，尽管我尝试了所有的组合，特别是尝试

  g ++ main.cpp -o main.out -pthread  - std = c ++ 11 
  

当我运行生成的可执行文件时，我仍然得到

  terminate在抛出'std :: system_error'实例后调用
 what（）：启用多线程以使用std :: thread：Operation不允许
中止（内核转储）
  

这里是 g ++ --version 。

  g ++（Ubuntu / Linaro 4.8.1-10ubuntu9） 1 
版权所有（C）2013自由软件基金会，
这是免费软件;请参阅复制条件的来源。有NO 
保修;甚至不适用于适销性或特定用途的适用性。 
  

g ++是否需要使用不同的顺序或命令集 com / questions / 19463602 / compiling-multithread-code-with-g>这里

  g ++ -Wl， --no-as-need -std = c ++ 11 -pthread main.cpp -o main.out 
  




This is not a duplicate question, because the solutions presented are not working on my compiler. I am trying to compile and run the following example from this question.

#include <thread>
#include <iostream>

int main(int, char **){
    std::thread tt([](){ std::cout<<"Thread!"<<std::endl; });
    tt.join();
}

I have attempted to use the solutions presented in both that original question as well as the accepted answer to this duplicate. However, although I tried all the combinations listed, and in particular tried

g++  main.cpp -o main.out -pthread -std=c++11

When I run the resulting executable, I still get

terminate called after throwing an instance of 'std::system_error'
  what():  Enable multithreading to use std::thread: Operation not permitted
Aborted (core dumped)

Here is the output of g++ --version.

g++ (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
Copyright (C) 2013 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.

Is there a different ordering or set of commands I need to use for g++ 4.8.1?

解决方案

this was answered here

g++ -Wl,--no-as-needed -std=c++11 -pthread main.cpp -o main.out

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