GCOV-TOOL(1) GNU GCOV-TOOL(1) 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 : * (). * . * . (scale) (normalize) . : * . . * ( freestanding). . . * gcda . * libgcov . . : * : . . -- . * (summary checksum): 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 (verbose). -w w1,w2 --weight w1,w2 directory1 directory2. . merge-stream gcfn gcda. file stdin. . . gcfn gcda "__gcov_filename_to_gcfn()" "__gcov_info_to_gcda()" "#include " . -v --verbose (verbose). -w w1,w2 --weight w1,w2 gcfn gcda . . 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 (verbose). overlap . (arc profiles) . 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 . --function . -F --fullname gcda . -h --hotonly / (hot) . -o --object . -t float --hot_threshold (hot counter) . -v --verbose (verbose) . (SEE ALSO) gpl(7), gfdl(7), fsf-funding(7), gcc(1), gcov(1) Info gcc. (COPYRIGHT) Copyright (c) 2014-2025 Free Software Foundation, Inc. / (GNU Free Documentation License) . "GNU General Public License" "Funding Free Software" () ( ) () ( ). gfdl(7) . () FSF : A GNU Manual () FSF : 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-15.2.0 2025-08-08 GCOV-TOOL(1)