eu-addr2line --version (return code: 0)
eu-addr2line (elfutils) 0.170
Copyright (C) 2017 The elfutils developers <http://elfutils.org/>.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
eu-addr2line -HELP (return code: 64)
eu-addr2line: unrecognized option '--HELP'
Try `eu-addr2line --help' or `eu-addr2line --usage' for more information.