GCOV-TOOL(1) GNU GCOV-TOOL(1) (NAME) gcov-tool - () gcda (SYNOPSIS) gcov-tool [-v|--version] [-h|--help] gcov-tool merge [merge-options] directory1 directory2 [-o|--output directory] [-v|--verbose] [-w|--weight w1,w2] gcov-tool merge-stream [merge-stream-options] [file] [-v|--verbose] [-w|--weight w1,w2] gcov-tool rewrite [rewrite-options] directory [-n|--normalize long_long_value] [-o|--output directory] [-s|--scale float_or_simple-frac_value] [-v|--verbose] gcov-tool overlap [overlap-options] directory1 directory2 [-f|--function] [-F|--fullname] [-h|--hotonly] [-o|--object] [-t|--hot_threshold] float [-v|--verbose] (DESCRIPTION) gcov-tool () gcda gcc . gcov-tool : * . * . * . . : * . . * ( freestanding). . . * gcda (summary) (histogram). * libgcov . . : * (histogram): . . . * : CRC32 . gcov-info . gcov-tool . . . * (value profile): (heap). . (OPTIONS) -h --help gcov-tool ( ) . -v --version gcov-tool ( ) . merge . -o directory --output directory . merged_profile . -v --verbose ( ). -w w1,w2 --weight w1,w2 directory1 directory2. 1 . merge-stream gcfn gcda. file stdin. . . gcfn gcda "__gcov_filename_to_gcfn()" "__gcov_info_to_gcda()" "#include " . -v --verbose . -w w1,w2 --weight w1,w2 gcfn gcda . 1 . rewrite . -n long_long_value --normalize . . -o directory --output directory . rewrite_profile . -s float_or_simple-frac_value --scale float_or_simple-frac_value . 1 2 2/3 5/3 . -v --verbose . overlap . (arc) . min (p1_counter[i] / p1_sum_all, p2_counter[i] / p2_sum_all) i p1_counter[i] p2_counter[i] p1_sum_all p2_sum_all 1 2 . -f --function . -F --fullname gcda. -h --hotonly (). -o --object . -t float --hot_threshold . -v --verbose . (SEE ALSO) gpl(7), gfdl(7), fsf-funding(7), gcc(1), gcov(1) Info gcc. (COPYRIGHT) (c) 2014-2026 (Free Software Foundation, Inc.) / << >> (GNU Free Documentation License) 1.3 <> <> () ( ) () ( ). gfdl(7) . (a) The FSF's Front-Cover Text is: A GNU Manual (b) The FSF's Back-Cover Text is: You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development. gcc-16.1.0 2026-04-30 GCOV-TOOL(1)