Updating Root version 5.34 to 6.02

[tap786]

Hello,

I know this is a very naive question but I am having trouble updating my current Root version. I have version 5.34/18 and I would like to update to the latest pro version (6.02.00). Do I have to uninstall and then re-install do update or is there some other way?

Thanks!

[Axel]

Hi,

That depends on how you installed ROOT. If you have put all of ROOT into a separate directory (downloaded the binaries or built yourself without --prefix build) then you can simply install them side by side: put ROOT 6.02 into a different directory and use

source wherever-6.02-is/bin/thisroot.sh

to select one or the other.

Axel.

[Wile_E_Coyote]

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…

[tap786]

Thanks for your replies. I installed root using Macports and I have a directory called root. Does this constitute building it myself or downloading the binaries or using --prefix?