lcov を Homebrew, apk, chocolatey, apt, dnf, MacPorts, Nix, pacman, zypper でインストール

プロジェクトリンク

• ホームページ
• パッケージマネージャページ

コマンドとエイリアス

• gendesc
• genhtml
• geninfo
• genpng
• lcov
• llvm2lcov
• perl2lcov
• py2lcov
• xml2lcov
• xml2lcovutil.py

プロジェクトの歴史

The LCOV README describes the project as a tool for manipulating and displaying what parts of a program were covered during tests. It began as a front end around GCC `gcov` output and was initially designed to support Linux kernel coverage measurements, while also working for ordinary user-space programs.

Over time LCOV expanded beyond GCC `gcov` text data. The README lists converters and support for coverage sources such as LLVM `llvm-cov`, Python Coverage.py, Cobertura-like XML, Perl Devel::Cover, and Jacoco-style workflows, along with differential coverage, date binning, owner binning, and spreadsheet/reporting support.

採用の歴史

LCOV became a common package in Unix developer toolchains because it gives C and C++ projects a simple path from compiler coverage flags to browsable HTML reports. It is packaged across Homebrew, Debian, Ubuntu, Fedora, Arch, Nix, MacPorts, Chocolatey, Alpine, and openSUSE-style ecosystems.

Its adoption also comes from CI and kernel-development workflows: coverage reports are easy to publish as artifacts, and LCOV trace files can be merged, filtered, and compared across test runs.

使われ方

Typical usage captures baseline or test coverage with `lcov` or `geninfo`, removes unwanted paths, merges trace files, and renders the result with `genhtml`. Related utilities convert data from Perl, Python, LLVM, and XML coverage formats into LCOV trace data.

パッケージ好きにとっての重要性

LCOV matters to package nerds because it is one of the standard lingua franca formats and toolsets for coverage artifacts. Many packages, CI recipes, and dashboards understand LCOV trace files or HTML output even when the project itself uses a different compiler or language.

It is also a classic example of a packaging-friendly developer tool: script-based, manpage documented, configurable via system and user rc files, and useful both in local shells and noninteractive build farms.

タイムライン

• 2000s: LCOV originated in the Linux Test Project as a GCOV extension for kernel coverage measurement.
• 2022-06-03: Version 1.16 release published on GitHub.
• 2023-05-25: Version 2.0 release published.
• 2024-04-19: Version 2.1 release published.
• 2025-01-09: Version 2.3 release published.
• 2025-12-21: Version 2.4 release published.

Related projects

• Related projects and formats include GCC `gcov`, LLVM `llvm-cov`, Linux Test Project, Coverage.py, Cobertura XML, Perl Devel::Cover, Jacoco, gcovr, CI coverage artifact publishing, and kernel coverage tooling.

ソース

• https://api.github.com/repos/linux-test-project/lcov/releases?per_page=20
• https://github.com/linux-test-project/lcov
• https://github.com/linux-test-project/lcov/tree/master/man
• https://raw.githubusercontent.com/linux-test-project/lcov/master/README.rst
• https://www.kernel.org/doc/html/v6.0/dev-tools/gcov.html