lcov

{
  "aliases": [],
  "alternatives": [
    "gcov",
    "llvm-cov",
    "kcov",
    "codecov"
  ],
  "build_dependencies": [],
  "categories": [
    "profiler",
    "coverage",
    "testing"
  ],
  "caveats": null,
  "conflicts_with": [],
  "dependencies": [],
  "deprecated": 0,
  "deprecation_reason": null,
  "desc": "Graphical front-end for GCC\u0027s coverage testing tool (gcov)",
  "disable_reason": null,
  "disabled": 0,
  "enrichment_fetched_at": "2026-06-20T23:40:45+00:00",
  "first_seen": "2026-06-20T23:34:18+00:00",
  "full_name": "lcov",
  "github_default_branch": "master",
  "github_last_commit_at": "2026-06-09T16:41:04Z",
  "github_readme_excerpt": "=================================================\nREADME file for the LTP GCOV extension (LCOV)\n=================================================\n\nLast changes: 2026-05-30\n\nDescription\n===========\n\nLCOV is a tool to manipulate and display information about what parts of a\nprogram are actually executed (*i.e.* \"covered\") while running a particular test\ncase or set of testcases. LCOV consists of a set of Perl scripts which build on\nthe text output of various coverage tools - *e.g.*, gcov, llvm-cov, Coverage.py,\nCobertura, Devel::Cover, Jacoco, etc. - to implement the following enhanced\nfunctionality:\n\n- **HTML based output**: coverage rates are indicated using bar graphs and\n  specific colors in a hyperlinked coverage report, intended to enable the\n  user to quickly diagnose and address coverage issues.\n\n- **Support for large projects**: overview pages allow quick browsing of\n  coverage data by providing a hierarchical directory structure view, a flat\n  list of all source files in the project, or a three-level detail view:\n  directory, file and source code view.\n\n- **Support for multiple languages** - including C/C++, Perl, and Python.\n\nLCOV was initially designed to support Linux kernel coverage measurements,\nbut works as well for coverage measurements on standard user space applications.\n\nLCOV supports differential coverage, as well as date- and owner-binning. See:\n\n- https://arxiv.org/abs/2008.07947\n\nor\n\n- https://ieeexplore.ieee.org/document/9438597\n\nfor a detailed explanation of the concepts and several possible use models.\n\nA video presentation of the basic ideas can be found at:\n\n- http://doi.org/10.5281/zenodo.4653252\n\nIn addition, several other features and capabilities are available. See\nsection 6, below, for a brief description - and also see the man pages and\nthe test cases.\n\n.. _table-of-contents:\n\nTable of Contents\n=================\n\n1. `Included files \u003c#section-1-included-files\u003e`_\n2. `Installing LCOV \u003c#section-2-installing-lcov\u003e`_\n3. `Dependencies \u003c#sec",
  "github_repo": "linux-test-project/lcov",
  "github_stars": 1097,
  "github_topics": [],
  "homepage": "https://github.com/linux-test-project/lcov",
  "homepage_og_description": null,
  "homepage_og_image": null,
  "homepage_title": null,
  "installs_30d": 21799,
  "installs_365d": 132853,
  "installs_90d": 37609,
  "keg_only": 0,
  "keg_only_reason": null,
  "last_seen": "2026-06-20T23:34:18+00:00",
  "license": "GPL-2.0-or-later",
  "llm_generated_at": "2026-06-20T23:43:29+00:00",
  "llm_model": "claude-haiku-4-5",
  "name": "lcov",
  "oldnames": [],
  "one_liner": "Perl-based tool that processes gcov output to generate HTML coverage reports for C/C++, Python, and other languages.",
  "optional_dependencies": [],
  "rank_30d": 222,
  "rank_365d": 358,
  "rank_90d": 328,
  "raw_hash": "30d743e2a2f5dc17",
  "recommended_dependencies": [],
  "revision": 1,
  "ruby_source_path": "Formula/l/lcov.rb",
  "tap": "homebrew/core",
  "test_dependencies": [],
  "uses_from_macos": [
    "perl"
  ],
  "version_head": "HEAD",
  "version_stable": "2.4",
  "versioned_formulae": [],
  "why_use_this": "Use lcov to visualize code coverage across large projects with interactive HTML reports showing coverage by directory, file, and source line. It bridges gcov\u0027s raw text output with human-readable dashboards, supports multiple languages and CI/CD workflows, and handles differential and historical coverage tracking\u2014essential for quality gates in test-driven development."
}