[Gate-users] Question in installing gate 6.1

[林威佐]

hi gaters
I was already installing Geant4, root,and CLHEP , but when I wanted to
install GATE, I have some problem.
Before I executed the file 'env_gate.sh', I opened it and wrote these
command in it(using red color mark).

.........
# 1. that the user has already defined the variable G4INSTALL
# 2. that there is a configuration script 'env.sh' in the directory
$G4INSTALL
# 3. the variable G4VERSION needs to be define: 9.1 or 9.2
#
# You will need to make sure that both conditions are met before you can use
this script
#
###########
set env GATEHOME /usr/bin/src/GATEHOME/gate_v6.1
set env G4INSTALL /opt/geant4
set env G4VERSION 9.1
set env ROOTSYS /usr/share/doc/root-5.2.8.00g
export G4ANALYSIS_USE_GENERAL=1
export G4_USE_G4BESTUNIT_FOR_VERBOSE=1

########### Geant4 configuration stage
#
# In the section below, we make sure that we have access to a script
# 'env.sh' in the directory $G4INSTALL, then launch this script
......


When I executed  I got the error.

The environment variable G4INSTALL is not defined yet.
You must define G4INSTALL before you can configure (and compile) GATE.
Aborting

What should I do?