c++11 多线程 Enable multithreading to use std::thread: Operation not permitted

[xiao_lei]

#include <iostream>
#include <stdio.h>
#include <future>
#include <mutex>
#include <condition_variable>

using namespace std;

std::mutex _mutex;
std::condition_variable cv;
bool stop=false;

void test()
{
cout << "Hello world!" << endl;
}

void polling(std::chrono::seconds s)
{
while(true)
{
std::unique_lock<std::mutex> lk(_mutex);
cv.wait_for(lk,s,[]{return stop;});
if(!stop)
test();
lk.unlock();
if(stop)
break;
}
}

int main()
{
std::chrono::seconds s(5);
std::async(std::launch::async, polling,s);
char ch;
ch=cin.get();

if(ch=='e')
{
std::lock_guard<std::mutex> lk(_mutex);
stop = true;
cv.notify_one();
}
return 0;
}

opensuse13.1下code::blocks 13.12
在code::blocks的build option中添加了-pthread，other link option中添加了-Wl,--no-as-needed，编译通过后在控制台执行时发生Enable multithreading to use std::thread: Operation not permitted错误。

目的：每5秒打印hello world，按e结束
求解
多谢！

[xiao_lei]

g++ 4.8.1 -lpthread已试过, terminate called after throwing an instance of 'std::system_error' what(): Enable multithreading to use std::thread: Operation not permitted Aborted

[xiao_lei]

已解决 编译和链接时都指定-pthread即可

[ri_aje]

g++-4.8.2 -lpthread 试了一下可以运行。