Error installing root v6.26 on ubuntu 22.04

Hi everyone,
I am trying to install root v6.26 by buildling from source on ubuntu 22.04 but i’m getting the same error again and again. I followed the instruction on root website.
here is the error
CMake Error at XROOTD-stamp/XROOTD-download-Release.cmake:49 (message):
Command failed: 1

‘/usr/bin/cmake’ ‘-Dmake=’ ‘-Dconfig=’ ‘-P’ ‘…/root_build/builtins/xrootd/XROOTD-prefix/src/XROOTD-stamp/XROOTD-download-Release-impl.cmake’

See also


when I look at …/XROOTD-download-out.log, I see

verifying file…
– SHA256 hash of
does not match expected value
expected: ‘84e8a9a2bcad116df479f94e985c287dd99fbac0613d4fbb61f4ccc0cef81fa3’
actual: ‘2b394270c55cb3d14f3c44b692311db99d2d25278882b513d4d564b68a58ed4a’
– Hash mismatch, removing…

Any help is appreciated.

Welcome to the ROOT forum, @B90 !

Indeed that’s a bug, we’re about to publish a new release that will address this. Until then please grab the sources through git, from the current v6-26-00-patches git branch or

Thanks Axel.

And just FYI the release is out.

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