Clang / LLVM Header Include Issue


I apologize if this is the wrong place to post this but I could do with some assistance. I’m working on getting LLVM and clang installed with Ubuntu and try to compile some tutorial code from here -

I have been running into some problems when compiling using g++ and I would assume it is to do with the fact I have not installed something correctly (I am fairly new to this stuff).

When I attempt to execute this command -

What is the output of
    $LLVM/Debug+Asserts/bin/llvm-config --cxxflags
    $LLVM/Debug+Asserts/bin/llvm-config --ldflags --libs