how to use std::filesystem on gcc 8?

Question

I have updated version of gcc, gcc --version produces the following output

    gcc (Ubuntu 8.1.0-5ubuntu1~16.04) 8.1.0
Copyright (C) 2018 Free Software Found         


        

Answer 1

Because of the silly rep system, I can't make this a comment on slashmais's answer.

When using an IDE, make sure that you also set the compiler to be used to GCC8 or above.

In my case, despite being installed, CodeLite was using a lower version of GCC and causing headaches (re: not finding the header)!

Manually setting CodeLite to use gcc-8 (instead of just gcc fixed this problem.