cmakefmt is a fast, workflow-first CMake formatter built in Rust.

It exists to replace the aging Python cmake-format tool with a single native binary that is easy to install, fast enough for pre-commit and CI, and capable enough for real project use.

• The main formatter repository: cmakefmt/cmakefmt
• Documentation: cmakefmt.dev
• Releases and install guidance: latest releases
• Rust crate: cmakefmt-rust on crates.io

• Fast enough for editor-on-save, pre-commit hooks, and CI
• Distributed as one native binary, with no Python environment to manage
• Designed around real workflows: --check, --diff, --staged, --changed, machine-readable reports, and config introspection
• Aware of custom command signatures, so project-specific macros and functions format sensibly
• Built to preserve comments, support formatter disable regions, and behave predictably across whole repositories

brew install cmakefmt/cmakefmt/cmakefmt
cmakefmt --version
cmakefmt --check .
cmakefmt --in-place .

Rust users can also install via:

cargo install cmakefmt-rust

• Getting Started
• CLI Reference
• Config Reference
• Migration from cmake-format
• Performance
• Library API

cmakefmt is actively maintained and already usable on real projects. It is still pre-1.0, so formatter behavior and packaging details may continue to evolve as the tool matures.

Issues, bug reports, regression cases, and pull requests are welcome in cmakefmt/cmakefmt.