bindgen automatically generates Rust FFI bindings to C and C++ libraries.
For example, given the C header cool.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 the cool library's functions 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); } }
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