lcov

Capture coverage data

$ lcov --capture --directory [.] --output-file [coverage.info]

$ genhtml [coverage.info] --output-directory [coverage/]

$ lcov --remove [coverage.info] '*/test/*' -o [filtered.info]

$ lcov --extract [coverage.info] '*/src/*' -o [src.info]

$ lcov --add-tracefile [a.info] --add-tracefile [b.info] -o [combined.info]

$ lcov --zerocounters --directory [.]

lcov [options]

lcov processes gcov code coverage data. It collects and manipulates coverage information.
The tool generates coverage reports from gcc/gcov data. Use genhtml to create HTML reports.

--capture

Capture coverage data.

Source directory.

Output trace file.

Remove matching files.

Extract matching files.

Add trace file.

Display help information.

Requires gcc/gcov. C/C++ focused. Part of LCOV package.

lcov was created for the Linux Test Project to provide graphical code coverage analysis.

gcov(1), genhtml(1), gcovr(1)