Cern root v6.26.00 installation in ubuntu 22.0

[Wile_E_Coyote]

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Number 5 is Alive!

For Halloween, I decided to dig the good old ROOT 5 up out of its grave. Guess what? It resurrected! Spooky, no? This is Ubuntu 22.04 LTS / x86_64 / GCC 11.3 here. Below you can find some notes on how to easily build the head of the v5-34-00-patches branch. First, make sure you have a “comprehensive” set of system packages installed: sudo apt install binutils gcc g++ gfortran make cmake git curl dpkg-dev sudo apt install libx11-dev libxpm-dev libxft-dev libxext-dev sudo apt install libafter…