[Gate-users] error in installation

[Maryam Fallahpoor]

Hi,
I'm trying to install GATE 8.0. I have installed appropriate versions of CLHEP, Root, and Geant4, according to installation guide on ubuntu 16.04. But when I try to install GATE, I confront with an error which says: please install Root and make it available in Path.
I define the Root path in the screen before configuration, but I don't know why it doesn't work? Also, I couldn't install binary distribution of Root for ubuntu16.04, because it didn't make Cmakelist.text, I had to install source distribution of Root.
Is there any one that can help me?
Thanks in advance,  .