ROOT startup problem

Hello ROOT Experts,

I have installed ROOT6 on my fedora Linux, and compiled it successfully, but when I start the root and attach a file, a bothering message appear:

[root@dhcp239 Delphes-3.3.2]# root -l analysis_files/4e/signal_500GeV_4e.root root [0] Attaching file analysis_files/4e/signal_500GeV_4e.root as _file0... IncrementalExecutor::executeFunction: symbol '_ZN5cling10printValueEPPKv' unresolved while linking [cling interface function]! You are probably missing the definition of cling::printValue(void const**) Maybe you need to load the corresponding shared library? (TFile *) Error in ValuePrinter: missing output string. root [1]
Could you please help me?

Thank You in Advance


Indeed worrisome. Which platform exactly (compiler + version, x86_64?), how did you configure ROOT?

Cheers, Axel.

Hello Alex,

Thank You for your prompt reply, here is the information:

[root@dhcp239 Delphes-3.3.2]# uname -a Linux 4.3.3-303.fc23.x86_64 #1 SMP Tue Jan 19 18:31:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux [root@dhcp239 Delphes-3.3.2]# gcc --version gcc (GCC) 5.3.1 20151207 (Red Hat 5.3.1-2) Copyright (C) 2015 Free Software Foundation, Inc.

Thank You again


This is likely because Fedora has switches to the new GCC ABI which clang doesn’t support yet… You can follow to see when we are done.

Until then please try to build ROOT with an older compiler, or probably simpler: use it in a virtual machine.

Cheers, Axel.

Thank You so much