1. Geant4 Installation Supported platforms:  Scientific Linux 5 + 6 with gcc 4.1.2/4.6  Mac Os X 10.7 and 10.8 with gcc 4.21  Windows7 with Visual Studio 10 Other Linux distributions will usually work as well but paths to external libraries may have to be given manually, e.g. often Qt when using Ubuntu Geant4 itself requires only aforementioned compilers + CMake Additional capabilities (Visualization, GDML…) require external libraries (OGL, Mesa, Qt, LibXerces…) 1

2. Geant4 Installation Installation is CMake based Download source and untar/zip into (temporary) directory “/path/to/”, create geant4.x.x dir Create build directory “/path/to/geant4-build” In build dir: cmake –DCMAKE_INSTALL_PREFIX /install_dir/ [additional options]../path/to/geant4.x.x make [-jN], with N cores to compile on make install 2

3. Geant4 Installation – Some Useful Options -DGEANT4_INSTALL_DATA=ON Downloads and installs data files during make -DGEANT4_USE_GDML=ON Build GDML support -DGEANT4_USE_QT=ON Build Qt user interface and visualization driver -DGEANT4_USE_OPENGL_X11=ON Build OpenGL X11 visualization driver Full list of options available in Geant4 installation documentation 3