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.
Windows API bindings are not included in this crate. If you are looking for WinAPI bindings, consider using crates like windows-sys.
More detailed information about the design of this library can be found in its associated RFC.
Currently, libc has two active branches: main for the upcoming v1.0 release,
and libc-0.2 for the currently published version. By default all pull requests
should target main; once reviewed, they can be cherry picked to the libc-0.2
branch if needed.
We will stop making new v0.2 releases once v1.0 is released.
See the section in CONTRIBUTING.md for more details.
Add the following to your Cargo.toml:
[dependencies]
libc = "0.2"-
std: by defaultlibclinks to the standard library. Disable this feature to remove this dependency and be able to uselibcin#![no_std]crates. -
extra_traits: allstructs implemented inlibcareCopyandClone. This feature derivesDebug,Eq,Hash, andPartialEq. -
const-extern-fn: Changes someextern fns intoconst extern fns. If you use Rust >= 1.62, this feature is implicitly enabled. Otherwise it requires a nightly rustc.
The minimum supported Rust toolchain version is currently Rust 1.63.
Increases to the MSRV are allowed to change without a major (i.e. semver- breaking) release in order to avoid a ripple effect in the ecosystem. A policy for when this may change is a work in progress.
libc may continue to compile with Rust versions older than the current MSRV
but this is not guaranteed.
You can see the platform(target)-specific docs on docs.rs, select a platform you want to see.
See ci/build.sh 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.
This project is licensed under either of
at your option.
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.