gcov-coverage

Name: gcov-coverage
Author: gadievron

3.4kstars541forks

How to install gcov-coverage?

gadievron/raptor/gcov-coverage

$npx -y skills add gadievron/raptor --skill gcov-coverage

Installs into the current project.

Summary

Add gcov code coverage instrumentation to C/C++ projects

Files · 1

View on GitHub

SKILL.md

1	# Code Coverage with gcov
2
3	## Purpose
4	Instrument C/C++ programs with gcov to measure test coverage.
5
6	## How It Works
7
8	### Build with Coverage
9	```bash
10	gcc --coverage -o program source.c
11	```
12
13	### Run Program
14	```bash
15	./program
16	# Creates .gcda files with execution data
17	```
18
19	### Generate Reports
20
21	Text report:
22	```bash
23	gcov source.c
24	# Creates source.c.gcov with line-by-line coverage
25	```
26
27	HTML report:
28	```bash
29	gcovr --html-details -o coverage.html
30	```
31
32	## Coverage Flags
33
34	- `--coverage` (shorthand for `-fprofile-arcs -ftest-coverage -lgcov`)
35	- Add to both `CFLAGS` and `LDFLAGS`
36
37	## Build System Integration
38
39	### Makefile
40	```makefile
41	ENABLE_COVERAGE ?= 0
42	ifeq ($(ENABLE_COVERAGE),1)
43	CFLAGS += --coverage
44	LDFLAGS += --coverage
45	endif
46	```
47
48	### CMake
49	```cmake
50	option(ENABLE_COVERAGE "Enable coverage" OFF)
51	if(ENABLE_COVERAGE)
52	add_compile_options(--coverage)
53	add_link_options(--coverage)
54	endif()
55	```
56
57	## When User Requests Coverage
58
59	### Steps
60	1. Detect build system (Makefile/CMake/other)
61	2. Add `--coverage` to CFLAGS and LDFLAGS
62	3. Clean previous build: `make clean` or `rm -f .gcda .gcno`
63	4. Build with coverage: `make ENABLE_COVERAGE=1` or `cmake -DENABLE_COVERAGE=ON`
64	5. Run tests: `make test` or `./test_suite`
65	6. Generate report: `gcovr --html-details coverage.html --print-summary`
66	7. Present summary and path to HTML report
67
68	## Output
69
70	Text (.gcov files):
71	```
72	-: 0:Source:main.c
73	5: 42: int x = 10;
74	#####: 43: unused_code();
75	```
76	- `5:` = executed 5 times
77	- `#####:` = not executed
78	- `-:` = non-executable
79
80	HTML: Interactive report with color-coded coverage
81
82	## Metrics
83	- Line coverage: Executed lines / total lines
84	- Branch coverage: Taken branches / total branches
85	- Function coverage: Called functions / total functions
86
87	Target: 80%+ line coverage, 70%+ branch coverage

People who liked this also viewed

6 picks

Type

tddSkills for Real Engineers. Straight from my .agents directory.SkillsJul 2026501k181k
test-driven-developmentUse when implementing any feature or bugfix, before writing implementation codeSkillsJul 2026175k259k
qaSkills for Real Engineers. Straight from my .agents directory.SkillsJul 2026160k181k
verification-before-completionUse when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any success claims; evidenceSkillsJul 2026153k259k
webapp-testingToolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser lSkillsJul 2026120k163k
playwright-best-practicesUse when writing Playwright tests, fixing flaky tests, debugging failures, implementing Page Object Model, configuring CI/CD, optimizing performance, mocking APIs, handling authentication or OAuth, teSkillsJul 202664k338

gcov-coverage

3.4kstars541forks

View on GitHub

How to install gcov-coverage?

gadievron/raptor/gcov-coverage

$npx -y skills add gadievron/raptor --skill gcov-coverage

Installs into the current project.

Summary

Add gcov code coverage instrumentation to C/C++ projects

Files · 1

View on GitHub

SKILL.md

1	# Code Coverage with gcov
2
3	## Purpose
4	Instrument C/C++ programs with gcov to measure test coverage.
5
6	## How It Works
7
8	### Build with Coverage
9	```bash
10	gcc --coverage -o program source.c
11	```
12
13	### Run Program
14	```bash
15	./program
16	# Creates .gcda files with execution data
17	```
18
19	### Generate Reports
20
21	Text report:
22	```bash
23	gcov source.c
24	# Creates source.c.gcov with line-by-line coverage
25	```
26
27	HTML report:
28	```bash
29	gcovr --html-details -o coverage.html
30	```
31
32	## Coverage Flags
33
34	- `--coverage` (shorthand for `-fprofile-arcs -ftest-coverage -lgcov`)
35	- Add to both `CFLAGS` and `LDFLAGS`
36
37	## Build System Integration
38
39	### Makefile
40	```makefile
41	ENABLE_COVERAGE ?= 0
42	ifeq ($(ENABLE_COVERAGE),1)
43	CFLAGS += --coverage
44	LDFLAGS += --coverage
45	endif
46	```
47
48	### CMake
49	```cmake
50	option(ENABLE_COVERAGE "Enable coverage" OFF)
51	if(ENABLE_COVERAGE)
52	add_compile_options(--coverage)
53	add_link_options(--coverage)
54	endif()
55	```
56
57	## When User Requests Coverage
58
59	### Steps
60	1. Detect build system (Makefile/CMake/other)
61	2. Add `--coverage` to CFLAGS and LDFLAGS
62	3. Clean previous build: `make clean` or `rm -f .gcda .gcno`
63	4. Build with coverage: `make ENABLE_COVERAGE=1` or `cmake -DENABLE_COVERAGE=ON`
64	5. Run tests: `make test` or `./test_suite`
65	6. Generate report: `gcovr --html-details coverage.html --print-summary`
66	7. Present summary and path to HTML report
67
68	## Output
69
70	Text (.gcov files):
71	```
72	-: 0:Source:main.c
73	5: 42: int x = 10;
74	#####: 43: unused_code();
75	```
76	- `5:` = executed 5 times
77	- `#####:` = not executed
78	- `-:` = non-executable
79
80	HTML: Interactive report with color-coded coverage
81
82	## Metrics
83	- Line coverage: Executed lines / total lines
84	- Branch coverage: Taken branches / total branches
85	- Function coverage: Called functions / total functions
86
87	Target: 80%+ line coverage, 70%+ branch coverage

People who liked this also viewed

6 picks

Type