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flounderK/gist:aa8181351777c8056bb056f8285287a5

Last active April 11, 2025 02:28
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gather code coverage information with gcov in gcc
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gistfile1.txt
# build targets with code coverage, CFLAGS bit only works if `+=` is used in the make file
CFLAGS="-fprofile-arcs -ftest-coverage" make CC=gcc
# <run test case>
# create files for all coverage reached by test case (don't use if using lcov)
find . -type f -iname '*.gcda' |xargs gcov
# generate coverage file for gcda files under this directory
lcov -c -d . -o coverage.info
# generate html report of all coverage
genhtml coverage.info -o coverage_report
# view coverage info in browser
firefox coverage_report/index.html
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