libc - Raw FFI bindings to platforms' system libraries

GHA Status Cirrus CI Status Latest Version Documentation License

libc provides all of the definitions necessary to easily interoperate with C code (or “C-like” code) on each of the platforms that Rust supports. This includes type definitions (e.g. c_int), constants (e.g. EINVAL) as well as function headers (e.g. malloc).

This crate exports all underlying platform types, functions, and constants under the crate root, so all items are accessible as libc::foo. The types and values of all the exported APIs match the platform that libc is compiled for.

More detailed information about the design of this library can be found in its associated RFC.

0.1 Usage

Add the following to your Cargo.toml:

libc = "0.2"

0.2 Features

0.3 Rust version support

The minimum supported Rust toolchain version is currently Rust 1.13.0. (libc does not currently have any policy regarding changes to the minimum supported Rust version; such policy is a work in progress.) APIs requiring newer Rust features are only available on newer Rust toolchains:

const mem::size_of1.24.0

0.4 Platform support

Platform-specific documentation (HEAD).

See ci/ for the platforms on which libc is guaranteed to build for each Rust toolchain. The test-matrix at GitHub Actions and Cirrus CI show the platforms in which libc tests are run.

0.4.1 Platform-specific documentation

0.5 License

This project is licensed under either of

at your option.

0.6 Contributing

We welcome all people who want to contribute. Please see the contributing instructions for more information.

Contributions in any form (issues, pull requests, etc.) to this project must adhere to Rust’s Code of Conduct.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in libc by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.