Missing definition of Vc_1::Common::checkLibraryAbi

ROOT
2

This is Ubuntu 20.04 LTS / x86_64 / gcc 9.3.0 here.
The building of the current “v6-24-00-patches” branch (the default cmake / make is used with “-j1”) says (for all three C++11, C++14 and C++17 builds):

(...)
[ 97%] Built target root
Scanning dependencies of target hsimple
[ 97%] Generating tutorials/hsimple.root
IncrementalExecutor::executeFunction: symbol '_ZN4Vc_16Common15checkLibraryAbiEjjPKc' unresolved while linking function '_GLOBAL__sub_I_cling_module_1'!
You are probably missing the definition of Vc_1::Common::checkLibraryAbi(unsigned int, unsigned int, char const*)
Maybe you need to load the corresponding shared library?

Processing hsimple.C...
hsimple   : Real Time =   0.21 seconds Cpu Time =   0.10 seconds
(TFile *) 0x55941b3a5e00
[ 97%] Built target hsimple
Scanning dependencies of target New
(...)

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