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Release 6.14/04 - 2018-08-23


This version restores zlib as the default compression algorithm for ROOT files. We have seen branch data that LZ4 did not compress well; until those cases are optimized, ROOT will resort to its well understood, traditional compression algorithm zlib.

Release Notes

The release notes for this release can be found here.

Source distribution

Platform Files Size
source root_v6.14.04.source.tar.gz 155M

Binary distributions

Platform Files Size
CentOS Cern 7 gcc4.8 root_v6.14.04.Linux-centos7-x86_64-gcc4.8.tar.gz 141M
Linux fedora26 gcc7.2 root_v6.14.04.Linux-fedora26-x86_64-gcc7.2.tar.gz 128M
Linux fedora27 gcc7.2 root_v6.14.04.Linux-fedora27-x86_64-gcc7.2.tar.gz 128M
Linux fedora28 gcc8.1 root_v6.14.04.Linux-fedora28-x86_64-gcc8.1.tar.gz 127M
Ubuntu 14 gcc4.8 root_v6.14.04.Linux-ubuntu14-x86_64-gcc4.8.tar.gz 125M
Ubuntu 16 gcc5.4 root_v6.14.04.Linux-ubuntu16-x86_64-gcc5.4.tar.gz 127M
Ubuntu 17 gcc7.2 root_v6.14.04.Linux-ubuntu17-x86_64-gcc7.2.tar.gz 133M
Ubuntu 18 gcc7.3 root_v6.14.04.Linux-ubuntu18-x86_64-gcc7.3.tar.gz 133M
OsX 10.12 clang90 root_v6.14.04.macosx64-10.12-clang90.dmg 126M
OsX 10.12 clang90 root_v6.14.04.macosx64-10.12-clang90.tar.gz 125M
OsX 10.13 clang91 root_v6.14.04.macosx64-10.13-clang91.dmg 126M
OsX 10.13 clang91 root_v6.14.04.macosx64-10.13-clang91.tar.gz 126M
preview Windows Visual Studio 2017 (dbg) root_v6.14.04.win32.vc15.debug.exe 181M
preview Windows Visual Studio 2017 (dbg) 294M
preview Windows Visual Studio 2017 root_v6.14.04.win32.vc15.exe 79M
preview Windows Visual Studio 2017 108M

Installations in CVMFS

Standalone installations with minimal external dependencies are available at:


Example for setting up ROOT and the corresponding compiler from CVMFS

. /cvmfs/
. /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 v6-14-04 v6-14-04


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.
  • zip: 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).