c++11 thread --多线程编译报错问题解决办法

来源：互联网发布：学软件编程薪资怎么样编辑：程序博客网时间：2024/06/06 02:30

//test.cpp#include <stdio.h>#include <iostream>#include <thread>#include <mutex>std::mutex mMutex;using namespace std;static int count=0;static int MAX=5000;static int line=0;static int line_count=5;void thread1(){    while(1){        if(count <MAX ){            mMutex.lock();            if(count <MAX ){                std::cout<<"A: "<<++count<<"    ";                if(++line == line_count){                    std::cout<<endl;                    line = 0;                }            }else{                break;            }            mMutex.unlock();        }    }}void thread2(){    while(1){        if(count <MAX ){            mMutex.lock();            if(count <MAX ){                std::cout<<"B: "<<++count<<"    ";                if(++line == line_count){                    std::cout<<endl;                    line = 0;                }            }else{                break;            }            mMutex.unlock();        }    }}int main(){        std::thread mThread1(thread1);        std::thread mThread2(thread2);        mThread1.detach();        mThread2.detach();    while(1){        int x;        std::cin>>x;        if(x==0){            break;        }    }    return 0;}

在终端中执行：

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

编译报错：

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

在网上查阅资料测试加上-Wl,--no-as-needed 就能正常编译运行了，完整的执行指令为：
g++ -std=c++11 -Wl,--no-as-needed test.cpp -pthread -o test.out