# unifdef を Homebrew, apk, apt, dnf, MacPorts, Nix, pacman, zypper でインストール unifdef のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。 ## インストール ```sh sudo av install brew:unifdef ``` 追加のインストールコマンド: ### macOS - Homebrew (100%): ```sh brew install unifdef ``` 証拠: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install unifdef ``` 証拠: MacPorts ports tree: devel/unifdef/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ### Linux - apk (92%): ```sh sudo apk add unifdef ``` 証拠: Alpine Linux edge package indexes: unifdef from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz - Debian apt (92%): ```sh sudo apt install unifdef ``` 証拠: Debian stable package indexes: unifdef from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz - dnf (92%): ```sh sudo dnf install unifdef ``` 証拠: Fedora Rawhide package metadata: unifdef from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/210a2053c8e007daf9ae39c2a21daaed9b2ddd07d63ecffa597050361e73650c-primary.xml.zst - Nix (92%): ```sh nix profile install nixpkgs#unifdef ``` 証拠: nixpkgs package indexes: pkgs/by-name/un/unifdef/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - pacman (92%): ```sh sudo pacman -S unifdef ``` 証拠: Arch Linux sync databases: unifdef from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz - zypper (92%): ```sh sudo zypper install unifdef ``` 証拠: openSUSE Tumbleweed package metadata: unifdef from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst ## パッケージ情報 - **パッケージキー:** brew:unifdef - **パッケージマネージャ:** Homebrew - **パッケージマネージャページ:** - **バージョン:** 2.12 - **ソース概要:** Selectively process conditional C preprocessor directives - **ホームページ:** - **リポジトリ:** - **上流ドキュメント:** - **ライセンス:** BSD-2-Clause AND BSD-3-Clause - **ソースアーカイブ:** - **生成日時:** 2026-08-04T22:13:35+00:00 ## 実行可能ファイル - unifdef (cli) - unifdefall (cli) - unifdef (エイリアス) - unifdefall (エイリアス) ## インストール挙動 - post-install フック: 未定義 - Bottle: 利用可能 対象 arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura ## バージョンと鮮度 - ページ生成日: 2026-08-04 - マネージャ版: 2.12 - ローカルデータ: OK - 上流リポジトリ: https://dotat.at/prog/unifdef/ - 情報: No package-manager update timestamp was available. - 情報: Release/tag comparison is only available for GitHub repositories. ## プロジェクトの歴史と使われ方 unifdef is a source-filtering utility that selectively removes C preprocessor conditionals. The official manual says it processes `#if`, `#ifdef`, `#ifndef`, `#elif`, `#else`, and `#endif` lines when command-line macro definitions are sufficient to decide whether a block should be kept or removed. ### プロジェクトの歴史 unifdef is much older than its GitHub mirror. The official manual states that the command appeared in 2.9BSD, and that ANSI C support was added in FreeBSD 4.7. It also credits the original implementation to Dave Yost and Tony Finch's rewrite for ANSI C support. Tony Finch's official project page explains the modern motivation: understanding `xterm`'s heavily conditionalized pty-handling code. That places unifdef in the Unix source-reading and source-cleanup tradition rather than in general-purpose preprocessing. The current project page publishes release archives, manual documentation, a browsable source repository, and a GitHub collaboration mirror. The GitHub README warns that GitHub release downloads are incomplete and points users back to the official dotat.at release files, which is useful context for packagers. ### 採用の歴史 The official homepage gives a concrete high-profile adoption example: the Linux kernel uses unifdef to strip `#ifdef __KERNEL__` sections from headers exported to userland. It also notes use outside C, including LaTeX workflows. The supplied package facts show broad distribution packaging across Homebrew, Debian/Ubuntu, Fedora/DNF, Alpine, Arch, MacPorts, Nix, openSUSE, and others. That matches the tool's age and purpose: it is small, portable, and useful in build and source-export pipelines. ### 使われ方 unifdef is used by specifying macros with `-D`, `-U`, or a definitions file, then filtering input files so known conditional branches are removed while unknown conditionals are preserved. It can operate on stdin/stdout or modify files in place. The manual also documents `unifdefall`, a script that uses `unifdef -s` and `cpp -dM` to derive macro information and remove all conditional directives from a file. This shows the tool's role as a controlled partial preprocessor rather than a full C preprocessor replacement. ### パッケージ好きにとっての重要性 unifdef is important in the package-nerd niche because it is both tiny and historically deep: a BSD-era tool still used for practical source filtering. It belongs in base-system and package-manager collections because build scripts and source-export tasks can depend on it without pulling in a large toolchain beyond normal C build support. Its Linux-kernel header-export use case is exactly the kind of quiet infrastructure job package maintainers care about: remove implementation-only conditional sections, preserve line-oriented source structure, and keep generated user-facing source understandable. ### タイムライン - 2.9BSD: Manual says the `unifdef` command appeared. - FreeBSD 4.7: Manual says ANSI C support was added. - 2015: Official manual page is dated December 3, 2015. - Current project page: Release 2.12 archives are published on dotat.at. - Current README: GitHub is maintained as a collaboration mirror, while release downloads remain on dotat.at. ### Related projects - The manual lists `cpp(1)` and `diff(1)` as related tools. - The official page cites Linux kernel header export as a real-world use. - The official page also mentions use with LaTeX, showing text-mode uses outside C. ### ソース - - - - input.source_facts.package-manager ## セキュリティノート unifdef に一致するローカルシークレット処理マニフェストは見つかりませんでした。将来の対応で安定したパッケージ URL を使えるよう、パッケージメタデータはここに公開されています。 ## ソースデータベース詳細 - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** unifdef - **Version Scheme:** 0 - **Revision:** 0 - **Head Version:** HEAD - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** yes - **URL Keys:** head, stable ## 他のパッケージマネージャ記録 - Debian apt - unifdef - 2.12-1: normalized package name match | Debian stable package indexes: unifdef from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Remove cpp '#ifdef' lines from files | http://dotat.at/prog/unifdef/ - Nix - unifdef: normalized package name match | nixpkgs package indexes: pkgs/by-name/un/unifdef/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Ubuntu apt - unifdef - 2.12-1: normalized package name match | Ubuntu 24.04 LTS package indexes: unifdef from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Remove cpp '#ifdef' lines from files | http://dotat.at/prog/unifdef/ - apk - unifdef - 2.12-r4: normalized package name match | Alpine Linux edge package indexes: unifdef from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Selectively remove C preprocessor conditionals | https://github.com/fanf2/unifdef - apk - unifdef-doc - 2.12-r4: normalized package name match | Alpine Linux edge package indexes: unifdef-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Selectively remove C preprocessor conditionals (documentation) | https://github.com/fanf2/unifdef - dnf - unifdef - 2.12-9.fc45: normalized package name match | Fedora Rawhide package metadata: unifdef from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/210a2053c8e007daf9ae39c2a21daaed9b2ddd07d63ecffa597050361e73650c-primary.xml.zst | Selectively remove C preprocessor conditionals | https://dotat.at/prog/unifdef/ - pacman - unifdef - 2.12-4: normalized package name match | Arch Linux sync databases: unifdef from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | Remove #ifdef'ed lines | https://dotat.at/prog/unifdef/ - zypper - unifdef - 2.12-3.5: normalized package name match | openSUSE Tumbleweed package metadata: unifdef from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | Removes ifdefs from C files | https://dotat.at/prog/unifdef/ - MacPorts - unifdef: normalized package name match | MacPorts ports tree: devel/unifdef/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## 関連リンク - [Terminal utility packages](https://pkg.so/ja/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://pkg.so/ja/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Developer build packages](https://pkg.so/ja/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata. - [Networking and protocol packages](https://pkg.so/ja/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [cppi](https://pkg.so/ja/brew/cppi/) - Shares pkgdb curated category or tags: c-preprocessor, cli, developer-tools. - [tradcpp](https://pkg.so/ja/brew/tradcpp/) - Shares pkgdb curated category or tags: c-preprocessor, cli, developer-tools. - [dpp](https://pkg.so/ja/brew/dpp/) - Local package facts share a topical domain. Shared terms: cli, developer, developer-tools, preprocessor, source. - [fourmolu](https://pkg.so/ja/brew/fourmolu/) - Local package facts share a topical domain. Shared terms: cli, developer, developer-tools, source. - [patchutils](https://pkg.so/ja/brew/patchutils/) - Local package facts share a topical domain. Shared terms: cli, developer, developer-tools, source. ## Combined YAML source View the package source record on GitHub. [combined/unifdef.yml](https://github.com/mxcl/pkgdb/blob/main/combined/unifdef.yml) ## ソース - pkg.so package database - package-page enrichment - curated package history - package version freshness - pkgdb category and tag curation - package relationship graph - external package-manager database matches - cross-ecosystem install command graph