Include < experimental/filesystem >

ROOT
1

Hi,

what do I have to do to be able to include the < experimental/filesystem > library in one of my root macros?
http://en.cppreference.com/w/cpp/header/experimental/filesystem

The file system library comes with c++17:
http://en.cppreference.com/w/cpp/experimental/fs

2

There is a CMake flag to enable C++17 support (this needs to be done when building root):

option name default value description
…
cxx17 OFF Build using C++17 compatible mode, requires gcc > 7.1.x or clang