使用g ++编译多线程代码（-Wl， - 不需要非工作） [英] Compiling multithread code with g++ (-Wl,--no-as-needed NOT working)

问题描述

我的问题实际上在这里描述：使用g ++编译多线程代码。
但是关于使用-Wl， - 不需要的工作的答案对我来说不起作用。

My problem is actually described here: Compiling multithread code with g++. But the answer regarding the work around by using "-Wl,--no-as-needed" is not working for me.

-Wl， - 不需要-pthread -std = c ++ 0x 在不同的顺序也，但我还是得到：

I've added -Wl,--no-as-needed -pthread -std=c++0x in different orders also, but I still get the:

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

该怎么办？

Info: 
Ubuntu 12.04LTS
Running Eclipse CDT
g++ v4.8.1 

编辑：
我尝试使用 -Wl构建， - 不需要-lpthread -std = c ++ 0x 没有运气。
代码：

I tried building with -Wl,--no-as-needed -lpthread -std=c++0x with no luck. The code:

#include <iostream>
#include <chrono>
#include <thread>

void foo()
{
    std::cout << "Thread 1 created.." << std::endl;
}

int main()
{
    std::thread t1(foo);

    t1.join();

    return 0;
}

编辑：
。

So unfortunately none of your suggestions worked. I decided to use Boost instead.

推荐答案

1. -Wl， - 不需要不 -Wl， - no_as_needed ，您使用连字符


2. -pthread 是编译器的标志，而不是链接器，链接器的正确标志是 -lpthread


3. Mingw并不总是带有相同的线程库，使用MinGW的多线程有多个选项，您应该根据您的MinGW版本记录自己。

1. it's -Wl,--no-as-needed not -Wl,--no_as_needed, you use the hyphen
2. -pthread is a flag for the compiler, not the linker, the right one for the linker is -lpthread
3. Mingw doesn't always comes with the same threading library, there are more than 1 options for multithreading with MinGW, you should document yourself about this according to your MinGW build

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