Is Eclipse Mars CDT support C++11 thread?

I have the following setup:

• Eclipse Mars 4.5 (Build id:20150621-1200)
• MinGW 201310 with g++ 4.8.1
• Windows 10

I followed few post to add std=c++11 in Project property and make sure __cplusplus is 201103L. Here is the result:

• I can see that std::map compile and run ok.
• If I #include , there is no syntax error. But the declaration of thread in main() shows error "Type thread could not be resolved". Then I open up thread header file located in c:/MinGW/lib/gcc/mingw32/4.8.1/include/c++/thread, it seems that the whole class is dimmed due to that _GLIBCXX_HAS_GTHREADS is undefined. If I manually define it in the path and symbols, then the thread class is fully defined. But there comes more errors in the thread itself. Did I missed something? Or if the C++11 thread isn't ready on eclipse+MinGW? Thank you!