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// SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
// SPDX-FileCopyrightText: 2022-2023 Linaro Ltd.
// SPDX-FileCopyrightText: 2022 Viresh Kumar <viresh.kumar@linaro.org>
// SPDX-FileCopyrightText: 2023 Erik Schilling <erik.schilling@linaro.org>
use std::env;
use std::path::PathBuf;
fn main() {
// Probe dependency info based on the metadata from Cargo.toml
// (and potentially other sources like environment, pkg-config, ...)
// https://docs.rs/system-deps/latest/system_deps/#overriding-build-flags
let libs = system_deps::Config::new().probe().unwrap();
// Tell cargo to invalidate the built crate whenever following files change
println!("cargo:rerun-if-changed=wrapper.h");
// The bindgen::Builder is the main entry point
// to bindgen, and lets you build up options for
// the resulting bindings.
let mut builder = bindgen::Builder::default()
// The input header we would like to generate
// bindings for.
.header("wrapper.h")
// Tell cargo to invalidate the built crate whenever any of the
// included header files changed.
.parse_callbacks(Box::new(bindgen::CargoCallbacks));
// Inform bindgen about the include paths identified by system_deps.
for (_name, lib) in libs {
for include_path in lib.include_paths {
builder = builder.clang_arg("-I").clang_arg(
include_path
.to_str()
.expect("Failed to convert include_path to &str!"),
);
}
}
// Finish the builder and generate the bindings.
let bindings = builder
.generate()
// 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!");
}
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