gcov (Ubuntu 7.2.0-6ubuntu1) 7.2.0 Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Usage: gcov [OPTION...] SOURCE|OBJ... Print code coverage information. -a, --all-blocks Show information for every basic block -b, --branch-probabilities Include branch probabilities in output -c, --branch-counts Output counts of branches taken rather than percentages -d, --display-progress Display progress information -f, --function-summaries Output summaries for each function -h, --help Print this help, then exit -i, --intermediate-format Output .gcov file in intermediate text format -l, --long-file-names Use long output file names for included source files -m, --demangled-names Output demangled function names -n, --no-output Do not create an output file -o, --object-directory DIR|FILE Search for object files in DIR or called FILE -p, --preserve-paths Preserve all pathname components -r, --relative-only Only show data for relative sources -s, --source-prefix DIR Source prefix to elide -u, --unconditional-branches Show unconditional branch counts too -v, --version Print version number, then exit -x, --hash-filenames Hash long pathnames For bug reporting instructions, please see: <file:///usr/share/doc/gcc-7/README.Bugs>.