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extern crate bindgen;
use std::env;
use std::path::PathBuf;
fn genbindings(path: &str) -> Result<bindgen::Bindings, bindgen::BindgenError> {
// The bindgen::Builder is the main entry point
// to bindgen, and lets you build up options for
// the resulting bindings.
bindgen::Builder::default()
// The input header we would like to generate
// bindings for.
.header(path)
// Finish the builder and generate the bindings.
.generate()
}
fn try_genbindings() -> Option<bindgen::Bindings> {
for header in &["wrapper.h", "fallback.h"] {
if let Ok(bindings) = genbindings(header) {
return Some(bindings);
}
}
None
}
fn main() {
// Tell cargo to tell rustc to link the system kmod
// shared library.
println!("cargo:rustc-link-lib=kmod");
let bindings = try_genbindings()
// Unwrap the Result and panic on failure.
.expect("Unable to generate bindings");
// Write the bindings to the $OUT_DIR/bindings.rs file.
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}