install

Additional install commands

macOS

Homebrewverified · 100%

brew install cppi

local Homebrew formula metadata

Linux

Debian aptverified · 92%

sudo apt install cppi

Debian stable package indexes · cppi · source: deb.debian.org

Fedora dnfverified · 92%

sudo dnf install cppi

Fedora Rawhide package metadata · cppi · source: dl.fedoraproject.org

Nixverified · 92%

nix profile install nixpkgs#cppi

nixpkgs package indexes · pkgs/by-name/cp/cppi/package.nix · source: api.github.com

openSUSE zypperverified · 92%

sudo zypper install cppi

openSUSE Tumbleweed package metadata · cppi · source: download.opensuse.org

overview

Package summary

Indent C preprocessor directives to reflect their nesting

Project links

Commands and aliases

cppi

history

Project history and usage

GNU cppi is a small GNU developer tool for indenting C preprocessor directives so their nesting is visible.

Project history

The package is maintained as a GNU program, with Savannah hosting its project and source repository and GNU publishing the user manual and release tarballs.

Adoption history

Its adoption is typical of compact GNU command-line utilities: it appears in Unix package collections as a formatting and lint-adjacent aid for C and C++ source trees.

How it is used

cppi is used from the command line on source files to make conditional-preprocessor structure easier to review by aligning directives with their nesting level.

Why package nerds care

The package matters to maintainers because it is narrowly scoped, reproducibly distributed through GNU release archives, and useful in style or cleanup pipelines without pulling in a full C formatter.

Timeline

2010: GNU FTP archive lists cppi 1.14 and 1.15 release tarballs.
2013: GNU FTP archive lists cppi 1.18 release tarballs.

Related projects

cppi sits near C formatting and linting tools, but its official scope is specifically C preprocessor directive indentation.

Sources

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

narrow executable package without higher-risk signals

Signals

metadata:no-higher-risk-signals

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 13 platform targets.

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
`cppi`	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 version1.18

manager updated

local dataok

upstreamnot checked

latest detectednot detected

https://www.gnu.org/software/cppi/

infoNo package-manager update timestamp was available.low confidence
infoRelease/tag comparison is only available for GitHub repositories.https://www.gnu.org/software/cppi/none confidence

install metadata

Package metadata

Package key	brew:cppi
Version	1.18
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/cppi
Homepage	https://www.gnu.org/software/cppi/
Repository	https://git.savannah.gnu.org/git/cppi.git
Upstream docs	https://www.gnu.org/software/cppi
License	GPL-3.0-or-later
Source archive	https://ftpmirror.gnu.org/gnu/cppi/cppi-1.18.tar.xz
Bottle	available (on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, 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	cppi
Version Scheme	0
Revision	0
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

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%

cppi 1.18-3

adjusts or checks indentation of C and C++ preprocessor directives

https://www.gnu.org/software/cppi/

sudo apt install cppi

Section: devel
Architecture: amd64
1 dependencies
normalized package name match
Matched by: Cppi

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

Nix95%

cppi

nix profile install nixpkgs#cppi

normalized package name match
Matched by: Cppi

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/cp/cppi/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

dnf95%

cppi 1.18-28.fc44

C preprocessor directive indenter

http://savannah.gnu.org/projects/cppi/

sudo dnf install cppi

License: GPL-3.0-or-later
Category: Unspecified
Architecture: x86_64
Source Package: cppi
2 dependencies
1 provides
normalized package name match
Matched by: Cppi

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: cppi from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

zypper95%

cppi 1.18-2.33

C preprocessor directive indenter

https://savannah.gnu.org/projects/cppi

sudo zypper install cppi

License: GPL-3.0+
Category: Development/Languages/C and C++
Architecture: x86_64
Source Package: cppi
1 dependencies
1 provides
normalized package name match
Matched by: Cppi

openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: cppi from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst

zypper95%

cppi-lang 1.18-2.33

Translations for package cppi

https://savannah.gnu.org/projects/cppi

sudo zypper install cppi-lang

License: GPL-3.0+
Category: System/Localization
Architecture: noarch
Source Package: cppi
1 dependencies
3 provides
normalized package name match
Matched by: Cppi

openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: cppi-lang from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

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.

combined/cppi.yml

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

Install cppi with Homebrew, apt, dnf, Nix, zypper