# flex をインストール

flex 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:flex
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install flex
```

  証拠: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install flex
```

  証拠: MacPorts ports tree: devel/flex/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

### Linux

- apk (92%):

```sh
sudo apk add flex
```

  証拠: Alpine Linux edge package indexes: flex from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz

- Debian apt (92%):

```sh
sudo apt install flex
```

  証拠: Debian stable package indexes: flex from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

- dnf (92%):

```sh
sudo dnf install flex
```

  証拠: Fedora Rawhide package metadata: flex from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/13ee7b80cb813542594d4235c4a0b8695435d5ecf23dd3580bc7515ae1b6180d-primary.xml.zst

- Nix (92%):

```sh
nix profile install nixpkgs#flex
```

  証拠: nixpkgs package indexes: flex from https://raw.githubusercontent.com/NixOS/nixpkgs/master/pkgs/top-level/all-packages.nix

- pacman (92%):

```sh
sudo pacman -S flex
```

  証拠: Arch Linux sync databases: flex from https://geo.mirror.pkgbuild.com/core/os/x86_64/core.db.tar.gz

- zypper (92%):

```sh
sudo zypper install flex
```

  証拠: openSUSE Tumbleweed package metadata: flex from https://download.opensuse.org/tumbleweed/repo/oss/repodata/155b97171d05e27afd950b6fe0d55513ff38f4597110664535bceedc680bbe6fd459f0733718dcc21dcf0efc7c8250fd1390c73d4790b42e62fb2c16a87242e5-primary.xml.zst

## パッケージ情報

- **パッケージキー:** brew:flex
- **パッケージマネージャ:** Homebrew
- **パッケージマネージャページ:** <https://formulae.brew.sh/formula/flex>
- **バージョン:** 2.6.4
- **ソース概要:** Fast Lexical Analyzer, generates Scanners (tokenizers)
- **ホームページ:** <https://github.com/westes/flex>
- **リポジトリ:** <https://github.com/westes/flex>
- **ライセンス:** BSD-2-Clause
- **ソースアーカイブ:** <https://github.com/westes/flex/releases/download/v2.6.4/flex-2.6.4.tar.gz>
- **更新:** 2026-02-19T13:24:34+01:00
- **生成ソース:** 2026-05-26T22:45:13+00:00

## 実行可能ファイル

- flex (cli)
- flex++ (cli)
- lex (cli)
- flex (エイリアス)
- flex++ (エイリアス)
- lex (エイリアス)

## 依存関係

- gettext

## ビルド依存関係

- help2man

## macOS 提供ライブラリ

- m4

## 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

## 鮮度

- ページ生成日: 2026-05-26
- マネージャ版: 2.6.4
- マネージャ更新日: 2026-02-19
- ローカルデータ: ok
- 上流リポジトリ: https://github.com/westes/flex
- info: No cached GitHub release or tag data was available.

## セキュリティノート

narrow executable package without higher-risk signals.

- **Geiger リスク:** green / low
- narrow executable package without higher-risk signals

## 関連リンク

- [gettext](https://www.automicvault.com/pkg/brew/gettext/) - Runtime dependency declared by Homebrew.
- [help2man](https://www.automicvault.com/pkg/brew/help2man/) - Build dependency declared by Homebrew.
- [crosstool-ng](https://www.automicvault.com/pkg/brew/crosstool-ng/) - Popular package that depends on this formula.
- [mdk](https://www.automicvault.com/pkg/brew/mdk/) - Popular package that depends on this formula.
- [dwarf](https://www.automicvault.com/pkg/brew/dwarf/) - Popular package that depends on this formula.

## ソース

- Nucleus package database
- Geiger risk classifier
- package-page enrichment
- package version freshness
- package relationship graph
- cross-ecosystem install command graph