gcov (Ubuntu 4.8.5-4ubuntu6) 4.8.5 Copyright (C) 2015 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. -h, --help Print this help, then exit -v, --version Print version number, then exit -a, --all-blocks Show information for every basic block -b, --branch-probabilities Include branch probabilities in output -c, --branch-counts Given counts of branches taken rather than percentages -n, --no-output Do not create an output file -l, --long-file-names Use long output file names for included source files -f, --function-summaries Output summaries for each function -o, --object-directory DIR|FILE Search for object files in DIR or called FILE -s, --source-prefix DIR Source prefix to elide -r, --relative-only Only show data for relative sources -p, --preserve-paths Preserve all pathname components -u, --unconditional-branches Show unconditional branch counts too -d, --display-progress Display progress information For bug reporting instructions, please see: <file:///usr/share/doc/gcc-4.8/README.Bugs>.