‘random_shuffle’ is not a member of ‘std’ c++ eclipse cdt

I have a large C++ code which I am importing into Eclipse CDT. The code compiles fine from command line but in eclipse it gives me following error:

‘random_shuffle’ is not a member of ‘std'

I am not able to resolve this issue. I am using the arguments -std=c++11 but that doesn't seem to be solution.

Can anyone help me to understand why this could be happening?

Thanks