[Gate-users] Issue with installing gate_v7.2 on ubuntu 16.04

[ait mlouk lahcen]

HI all
i'm trying to install Gate_7.2 on ubuntu 16.04 but i get this error message
and i couldn't figure how to solve it, i would appreciate if someone can
help me with it.
thanks in advance
I used

   -

   Geant4 version 10.2 .3
   -

   CLEHP version 2.3.1.1
   -

   ROOT version 5


mlouk at mlouk:~/gate/gate_v7.2-build$ make -j2
[  2%] Built target itkzlib
[  6%] Built target MetaIO
[  6%] Linking CXX executable Gate
/usr/bin/ld: cannot find -lGraf3d
collect2: error: ld returned 1 exit status
CMakeFiles/Gate.dir/build.make:16726: recipe for target 'Gate' failed
make[2]: *** [Gate] Error 1
CMakeFiles/Makefile2:68: recipe for target 'CMakeFiles/Gate.dir/all' failed
make[1]: *** [CMakeFiles/Gate.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
mlouk at mlouk:~/gate/gate_v7.2-build$
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