Root without C++ compiler installed?

[Wile_E_Coyote]

I always install ROOT 5 using the ROOTSYS based method described in this old post.
If you prefer to use the “--prefix” method (i.e., the official “Fixed location installation” method), do always remember to add an appropriate “--etcdir” (no need to do it for ROOT 6) and do remember to “unset ROOTSYS” before running configure and make.

Missing Canvas

Honestly speaking, sooner or later, you will learn by hard that the policy of using a “system-provided” ROOT version (e.g. in “/usr/[bin|lib]” or “/usr/local/[bin|lib]”) is a dead end. You will learn that you need something like three different versions of ROOT - just because something that works with a particular ROOT version is not working with another ones, or because some piece of your additional, experiment / analysis specific, software explicitly requires a particular ROOT version. The s…