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Add gcov code coverage instrumentation to C/C++ projects
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| name | Code Coverage with gcov |
| description | Add gcov code coverage instrumentation to C/C++ projects |
| version | 1 |
| author | Claude |
| tags | ["coverage","gcov","testing"] |
Instrument C/C++ programs with gcov to measure test coverage.
gcc --coverage -o program source.c
./program
# Creates .gcda files with execution data
Text report:
gcov source.c
# Creates source.c.gcov with line-by-line coverage
HTML report:
gcovr --html-details -o coverage.html
--coverage (shorthand for -fprofile-arcs -ftest-coverage -lgcov)CFLAGS and LDFLAGSENABLE_COVERAGE ?= 0
ifeq ($(ENABLE_COVERAGE),1)
CFLAGS += --coverage
LDFLAGS += --coverage
endif
option(ENABLE_COVERAGE "Enable coverage" OFF)
if(ENABLE_COVERAGE)
add_compile_options(--coverage)
add_link_options(--coverage)
endif()
--coverage to CFLAGS and LDFLAGSmake clean or rm -f *.gcda *.gcnomake ENABLE_COVERAGE=1 or cmake -DENABLE_COVERAGE=ONmake test or ./test_suitegcovr --html-details coverage.html --print-summaryText (.gcov files):
-: 0:Source:main.c
5: 42: int x = 10;
#####: 43: unused_code();
5: = executed 5 times#####: = not executed-: = non-executableHTML: Interactive report with color-coded coverage
Target: 80%+ line coverage, 70%+ branch coverage