macOS
Homebrewverified · 100%
brew install cpu_featureslocal Homebrew formula metadata
brew
Install cpu_features with Homebrew, apt, Nix
Cross platform C99 library to get cpu features at runtime. Version 0.11.0 via Homebrew; verified 2026-06-01.
install
Additional install commands
Linux
Debian aptverified · 92%
sudo apt install libcpu-features-devDebian stable package indexes · libcpu-features-dev · source: deb.debian.org
Nixverified · 92%
nix profile install nixpkgs#cpu_featuresnixpkgs package indexes · pkgs/by-name/cp/cpu_features/package.nix · source: api.github.com
overview
Package summary
Cross platform C99 library to get cpu features at runtime
Project links
Commands and aliases
- list_cpu_features
history
Project history and usage
cpu_features is Google's portable C99 library for detecting CPU instruction-set and microarchitecture features at runtime.
Project history
The official repository was created in 2018. Its README emphasizes portability, old-compiler compatibility, sandbox-aware detection strategies, thread safety, no allocation, no exceptions, unit tests, and suitability for low-level code such as libc-style routines.
Adoption history
The README positions cpu_features as cross-platform infrastructure across Linux, macOS, Windows, Android, and several CPU families. It also describes Android support and an NDK cpu-features.h compatibility layer, making it relevant to projects that need runtime dispatch without depending on platform-specific probes.
How it is used
Users include architecture-specific headers such as cpuinfo_x86.h or cpuinfo_arm.h, read feature structures returned by GetX86Info or GetArmInfo, and select optimized code paths based on runtime CPU support. The package also builds list_cpu_features for inspecting detected features, including JSON output.
Why package nerds care
For packagers, cpu_features is a small but foundational library: it helps upstreams choose optimized code paths while still shipping generic binaries, and it is designed to build with CMake, Bazel, and Zig across many architectures.
Timeline
- 2018: The google/cpu_features repository was created.
- 2025: v0.10.x releases were published from the official GitHub repository.
- 2026: v0.11.0 was published from the official GitHub repository.
Related projects
- The README describes cpu_features as an Android NDK cpu-features.h drop-in replacement.
Sources
security posture
Risk level: yellow
generalized runtime or code generation signal.
Risk classifier
yellow risk · medium confidence · runtime
Why
- generalized runtime or code generation signal
Signals
- text:runtime
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 6 platform targets.
- Build metadata lists 1 build dependencies.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
list_cpu_features | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-08
manager version0.11.0
manager updated2026-06-01
local dataok
upstreamcurrent
latest detectedv0.11.0
https://github.com/google/cpu_features
- okNo freshness warnings were generated.
install metadata
Package metadata
| Package key | brew:cpu_features |
|---|---|
| Version | 0.11.0 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/cpu_features |
| Homepage | https://github.com/google/cpu_features |
| Repository | https://github.com/google/cpu_features |
| Upstream docs | https://github.com/google/cpu_features#readme |
| License | Apache-2.0 |
| Source archive | https://github.com/google/cpu_features/archive/refs/tags/v0.11.0.tar.gz |
| Last updated | 2026-06-01T17:25:20Z |
| Pulse | updated |
| Build dependencies | cmake |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | cpu_features |
| Version Scheme | 0 |
| Revision | 0 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Debian apt95%
libcpu-features-dev 0.9.0-1+b1
cross platform C99 library to get cpu features
https://github.com/google/cpu_features
sudo apt install libcpu-features-dev- Section: libdevel
- Architecture: amd64
- Source Package: cpu-features
- normalized package name match
- Matched by: Cpu Features
Nix95%
cpu_features
nix profile install nixpkgs#cpu_features- normalized package name match
- Matched by: Cpu Features
Ubuntu apt95%
libcpu-features-dev 0.9.0-1
cross platform C99 library to get cpu features
https://github.com/google/cpu_features
sudo apt install libcpu-features-dev- Section: universe/libdevel
- Architecture: amd64
- Source Package: cpu-features
- normalized package name match
- Matched by: Cpu Features
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment