Introduction

bindgen automatically generates RustFFI bindings to C and C++ libraries.

For example, given the C headercool.h:

typedef struct CoolStruct {    int x;    int y;} CoolStruct;void cool_function(int i, char c, CoolStruct* cs);

bindgen produces Rust FFI code allowing you to call into thecool library'sfunctions and use its types:

#![allow(unused)]fn main() {/* automatically generated by rust-bindgen 0.99.9 */#[repr(C)]pub struct CoolStruct {    pub x: ::std::os::raw::c_int,    pub y: ::std::os::raw::c_int,}extern "C" {    pub fn cool_function(i: ::std::os::raw::c_int,                         c: ::std::os::raw::c_char,                         cs: *mut CoolStruct);}}