Include error file not found

Cling
1

I just installed Cling on my Mac. I keep getting the following error message:

fatal error: 'iostream' file not found
#include <iostream>
         ^~~~~~~~~~
ename: evalue

Any solutions on how to fix this?

2

Do you have XCode installed? You need it to run Cling and/or ROOT.

3

I have the command line tools (xcode-select) installed.
Do I need to install the full version of xcode in order to use Cling?

4

Yes, you need the full XCode, the command line tools alone are not enough. Sorry.