# `bindgen`
**`bindgen` automatically generates Rust FFI bindings to C (and some C++) libraries.**
For example, given the C header `doggo.h`:
```c
typedef struct Doggo {
int many;
char wow;
} Doggo;
void eleven_out_of_ten_majestic_af(Doggo* pupper);
```
`bindgen` produces Rust FFI code allowing you to call into the `doggo` library's
functions and use its types:
```rust
/* automatically generated by rust-bindgen */
#[repr(C)]
pub struct Doggo {
pub many: ::std::os::raw::c_int,
pub wow: ::std::os::raw::c_char,
}
extern "C" {
pub fn eleven_out_of_ten_majestic_af(pupper: *mut Doggo);
}
```
## Users Guide
[📚 Read the `bindgen` users guide here! 📚](https://rust-lang.github.io/rust-bindgen)
## API Reference
[API reference documentation is on docs.rs](https://docs.rs/bindgen)
## Contributing
[See `CONTRIBUTING.md` for hacking on `bindgen`!](./CONTRIBUTING.md)