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[core] Trigger RLogger configuration via ROOT_LOG environment variable (fixes #7614) - #23823
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fixes root-project#7614) - Allow configuring RLogger global and channel-specific verbosity using the ROOT_LOG (and fallback ROOT_LOGGERS) environment variable. - Support comma-separated Channel=Level syntax (e.g. ROOT.InterpreterPerf=Debug(3),ROOT.RBrowser=Error,default=Info). - Implement RLogManager::ConfigureFromEnv, ConfigureFromString, and ParseLogLevel supporting Debug(N), Debug+N, Info, Warning, Error, Fatal, and Unset. - Update RLogChannel::GetEffectiveVerbosity to respect channel verbosity configured in RLogManager. - Add GoogleTest unit tests in testLogger.cxx covering parsing, string configuration, environment variable parsing, and selective log emission and suppression.
vepadulano
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Oct 24, 2026
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Dear @muntasir-396 ,
You haven't checked if the original issue #7614 was already being addressed, or if it is still relevant. There is currently already another open PR linked to the same issue #23516. I will go ahead and close this one. Please, ask before committing, also to understand if an issue is still relevant. Also, you already have 6 open PRs (of which 3 drafts) https://github.com/root-project/root/pulls?q=is%3Apr+state%3Aopen+author%3Amuntasir-396 .
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Summary
This PR addresses #7614 by adding support for configuring
RLoggerglobal and channel-specific verbosity using theROOT_LOGenvironment variable (with fallback toROOT_LOGGERS):