As of Geant4 release 9.5, December 2011, Geant4 uses a completely different installation system called CMake.
New users are strongly encouraged to use the newest version of Geant4 and to follow the CMake installation instructions:
The following guides present a step by step procedure to install old, pre-CMake Geant4 versions for single-user operation on three operating systems: Linux, Mac and Windows.
Previous Geant4 Releases:
For the most comprehensive information on installation and configuration of Geant4, see:
The Geant4 Installation Guide
For the most up to date information and discussions, including advice from both Geant4 experts and from fellow users, see:
The Geant4 Installation and Configuration Forum
29 June 2012
SLAC Geant4 Team