This means you get red underlining and those annoying bugs at the side of the file that pop up a Type ‘thread’ could not be resolved message if you mouse over them. However, there’s one more annoying thing: in the editor, the error parser is still flagging the use of any thread related code as unrecognised. To clear syntax errors, add c++11 to compiler settings

Now, your project will compile, and you can also run it successfully. Select the Libraries tab, click Add and type: pthread

Project -> Properties -> C/C++ General -> Paths and Symbols. Instead you need to add pthread as a library. Go to: However, Eclipse builds and links in two distinct steps, so adding the -pthread flag won’t tell the linker what it needs to do. On the command line, this is as simple as adding the -pthread flag. To enable threading, you need to make sure that the pthread library is being linked to your code. What(): Enable multithreading to use std::thread: Operation not permitted Terminate called after throwing an instance of ‘std::system_error’ However, when you run, you will get an error like this: Step 1 takes care of the compile errors, and you should now be able to build your project. In the Language Standard drop down box, select: In the Tool Settings tab, under GCC C++ Compiler, select Dialect. Project -> Properties -> C/C++ Build -> Settings To enable C++11 support and clear this message, you need to go into: This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options. usr/include/c++/4.9.2/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. When you first include the thread header and declare a thread, if you haven’t set the dialect to c++11, you’ll run into an error like this (generated when Eclipse sees the thread header): There are three steps to getting your program to run perfectly and here’s what you need to do: Without these, you’ll run into all sorts of strange errors. If you want to use Eclipse to write programs that use the C++11 thread class, you need to make some adjustments to enable everything to run correctly.

How to use eclipse for c++