Usage

Using safer_ffi is pretty simple, provided one knows how C compilation works.

TL,DR

Cargo.toml

[lib]
crate-type = ["staticlib", "lib"]

[dependencies]
safer-ffi = "..."

[features]
headers = ["safer-ffi/headers"]

src/lib.rs

#![allow(unused)]
fn main() {
use ::safer_ffi::prelude::*;

#[ffi_export]
fn add(x: i32, y: i32) -> i32 {
    x.wrapping_add(y)
}

#[cfg(feature = "headers")]
pub fn generate_headers() -> ::std::io::Result<()> {
    ::safer_ffi::headers::builder()
        .to_file("filename.h")?
        .generate()
}
}

src/bin/generate-headers.rs

fn main() -> ::std::io::Result<()> {
    ::crate_name::generate_headers()
}

• And run:

  cargo run --bin generate-headers --features headers
  

  to generate the headers.