root

USE flags

• aqua - Include support for the Mac OS X Aqua (Carbon/Cocoa) GUI
• asimage - Enable support for media-libs/libafterimage
• c++14 - Build using the C++14 standard
• c++17 - Build using the C++17 standard
• cuda - Enable support for nVidia CUDA
• cudnn - Enable support for nVidia cuDNN library
• davix - Enable support for DAVIX Data Management Client (https://cern.ch/davix)
• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• emacs - Add support for GNU Emacs
• examples - Install examples, usually source code
• fftw - Use FFTW library for computing Fourier transforms
• fits - Enable support for images and data from FITS files with sci-libs/cfitsio
• fortran - Compile included Fortran programs
• gdml - Enable GDML writer and reader
• graphviz - Add support for the Graphviz library
• gsl - Use the GNU scientific library for calculations
• http - Enable http server support including but not limited to fastcgi support
• jupyter - Install dependencies to enable ROOT's C++ kernel in Jupyter notebooks
• libcxx - Build ROOT against sys-libs/libcxx
• minuit - Build ROOT's internal versions of minuit (fortran) and minuit2 (C++)
• mpi - Add MPI (Message Passing Interface) layer to the apps that support it
• mysql - Add mySQL Database support
• odbc - Add ODBC Support (Open DataBase Connectivity)
• opengl - Add support for OpenGL (3D graphics)
• oracle - Enable Oracle Database support
• postgres - Add support for the postgresql database
• pythia6 - Build the interface for sci-physics/pythia version 6.x
• pythia8 - Build the interface for sci-physics/pythia version 8.x
• python - Add optional support/bindings for the Python language
• python_single_target_python3_10 - Build for Python 3.10 only
• python_single_target_python3_11 - Build for Python 3.11 only
• python_single_target_python3_9 - Build for Python 3.9 only
• qt5 - Add support for the Qt 5 application and UI framework
• R - Enable support for dev-lang/R
• roofit - Build RooFit function fitting package
• root7 - Build experimental features to be released with ROOT 7
• shadow - Enable shadow authentication in rootd and proofd
• sqlite - Add support for sqlite - embedded sql database
• ssl - Add support for SSL/TLS connections (Secure Socket Layer / Transport Layer Security)
• tbb - Enable implicit multi-threading (IMT) with dev-cpp/tbb
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
• tmva - Built TMVA (ROOT's multi-variate analysis toolkit for machine learning)
• unuran - Enable support for sci-mathematics/unuran
• uring - Enable support for sys-libs/liburing in RNTuple
• vc - Enable support for dev-libs/vc with VecCore
• X - Add support for X11
• xml - Add support for XML files
• xrootd - Build the interface for net-libs/xrootd