How do I compile a cpp file with the thread class? [duplicate] - c++

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Does MinGW-w64 support std::thread out of the box when using the Win32 threading model?
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Closed 4 years ago.
I am learning to use threading so I am trying to run code utilizing the thread class so that I can run functions concurrently. However, trying to compile it in the terminals terminal, it says that thread and its object t1 is not declared.
threading.cpp:16:5: error: 'thread' was not declared in this scope
thread t1(task1, "Hello");
^~~~~~
threading.cpp:21:5: error: 't1' was not declared in this scope
t1.join();
I thought g++ doesn't support it but I also include in its argument to support c++11
g++ -std=c++11 threading.cpp
Any idea what I should I do about this error?
(OS: windows, gcc version 6.3.0)
Code is provided below(an example from a website):
#include <string>
#include <iostream>
#include <thread>
using namespace std;
// The function we want to execute on the new thread.
void task1(string msg)
{
cout << "task1 says: " << msg;
}
int main()
{
// Constructs the new thread and runs it. Does not block execution.
thread t1(task1, "Hello");
// Do other things...
// Makes the main thread wait for the new thread to finish execution, therefore blocks its own execution.
t1.join();
}

Answer 1

Any idea what I should I do about this error?
Your code compiles and runs fine with a recent version of GCC (coliru.com). And the same is true for older versions (e.g. GCC 6) and with -std=c++11. Your problem must be elsewhere:
Perhaps you're using an extremely old compiler?
Perhaps your C++ standard library headers are not installed?
Perhaps your C++ standard library headers are located someplace unexpected? That could happen if you're using a custom-installed version of the compiler or standard library.