Documentation#

cargo-feature-combinations runs cargo commands against selected — or all — combinations of your crate’s features. This documentation takes you from installation to advanced, per-target and per-command matrix configuration.

Start here#

• Introduction — what the tool does and how it thinks about features.
• Installation — install the cargo fc subcommand.
• Quick start — your first run and how to read the output.

Go deeper#

• Commands — running cargo through fc, output modes, the matrix subcommand, and the full CLI reference.
• Configuration — shape the feature matrix from Cargo.toml, including the precedence model, per-target and per-command overrides.
• Targets & cross-compilation — check every combination on every target triple, and pick a build driver.
• Recipes — copy-paste configurations for common scenarios.
• Continuous integration — fan the matrix out across GitHub Actions jobs.
• FAQ & troubleshooting — answers to common questions.

The CLI is the supported interface. The Rust API exists for the project’s own binaries and integration tests and carries no stability guarantees.