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Release 5.21/06 - 2008-11-26

Source distribution

Platform Files Size
source root_v5.21.06.source.tar.gz 25M

Binary distributions

Platform Files Size
Linux slc4 gcc4.3 root_v5.21.06.Linux-slc4-gcc4.3.tar.gz 48M
Linux slc4_amd64 gcc4.3 root_v5.21.06.Linux-slc4_amd64-gcc4.3.tar.gz 49M
Linux slc5 gcc3.4 root_v5.21.06.Linux-slc5-gcc3.4.tar.gz 47M
Linux slc5 gcc4.3 root_v5.21.06.Linux-slc5-gcc4.3.tar.gz 48M
Linux slc5_amd64 gcc3.4 root_v5.21.06.Linux-slc5_amd64-gcc3.4.tar.gz 49M
Linux slc5_amd64 gcc4.3 root_v5.21.06.Linux-slc5_amd64-gcc4.3.tar.gz 49M
Linux.slc4.gcc3.4 root_v5.21.06.Linux.slc4.gcc3.4.tar.gz 48M
Linux.slc4_amd64.gcc3.4 root_v5.21.06.Linux.slc4_amd64.gcc3.4.tar.gz 49M
macosx i386 icc 9.1 root_v5.21.06.macosx-i386-icc-9.1.tar.gz 48M
macosx powerpc gcc 4.0 root_v5.21.06.macosx-powerpc-gcc-4.0.tar.gz 45M
macosx104 i386 gcc 4.0 root_v5.21.06.macosx104-i386-gcc-4.0.tar.gz 45M
macosx105 i386 gcc 4.0 root_v5.21.06.macosx105-i386-gcc-4.0.tar.gz 36M
SunOS.5.9 root_v5.21.06.SunOS.5.9.tar.gz 51M
win32 (dbg) root_v5.21.06.win32.debug.tar.gz 85M
win32 root_v5.21.06.win32.tar.gz 45M
Windows Visual Studio 90 (dbg) root_v5.21.06.win32.vc90.debug.tar.gz 109M
Windows Visual Studio 90 root_v5.21.06.win32.vc90.tar.gz 47M
win32gcc root_v5.21.06.win32gcc.tar.gz 49M

Example for setting up ROOT from CVMFS

. ('', '')


The entire ROOT source can be obtained from our public Git repository:

git clone

The release specific tag can be obtained using:

cd root
git checkout -b v5-21-06 v5-21-06


Windows 7/Vista/XP/NT/2000 are supported. We offer two packaging types:

  • exe: a regular Windows installer package also setting up the required environment variables. With uninstall via "Control Panel" / "Add or Remove Programs". Simply download and start, or open directly. You can double-click ROOT to start it, ROOT files get registered with Windows.
  • tar: the traditional variant. Unpack e.g. with 7zip. Start ROOT in a Microsoft Visual Studio Prompt (in Start / Programs / Microsoft Visual Studio / Tools). If you installed ROOT to C:\root then call C:\root\bin\thisroot.bat before using ROOT to set up required environment variables.

Important installation notes

  • You must download the binary built with the exact same version of Visual Studio than the one installed on your system.
  • Do not untar in a directory with a name containing blank characters.
  • Take the release version if performance matters.
  • If you want to debug your code you need the ROOT debug build (you cannot mix release / debug builds due to a Microsoft restriction).