sci-physics ROOT Object Oriented Technologies is an object oriented data analysis framework written in C++ by the CERN. Widely used in high energy physics, but also in other data analysis applications. It contains the CINT C/C++ interpreter and many classes such as statistics, serialization, optimization, linear algebra, graphics, GUI toolkit, and a complete visualization framework. Build the HBOOK input/output functionality, needs fortran or sci-physics/cernlib Build the *experimental* new C++ interpretor CINT7 Buld the Clarens and PEAC plug-ins, to use in a GRID enabled analysis. Build the sci-physics/geant (GEANT4) navigator Build all math related libraries plugins, needs sci-libs/gsl Builds the interface to Pythia-6 (sci-physics/pythia) high energy physics generation events library Builds the interface to Pythia-8 (sci-physics/pythia) high energy physics generation events library Builds the reflection database for the C++ interpretor Build the xrootd low latency file server