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extern crate bindgen;
use pkg_config::Config;
use std::env;
use std::path::PathBuf;
fn main() {
// Re-run build if any of these change
println!("cargo:rerun-if-changed=bindings/wrapper.hpp");
println!("cargo:rerun-if-changed=build.rs");
// We need to configure libchrome and libmodp_b64 settings as well
let libchrome = Config::new().probe("libchrome").unwrap();
let libchrome_paths = libchrome
.include_paths
.iter()
.map(|p| format!("-I{}", p.to_str().unwrap()))
.collect::<Vec<String>>();
let search_root = env::var("CXX_ROOT_PATH").unwrap();
let paths = vec![
"/system/",
"/system/btcore",
"/system/include",
"/system/include/hardware",
"/system/types",
];
let bt_searches =
paths.iter().map(|tail| format!("-I{}{}", search_root, tail)).collect::<Vec<String>>();
// Also re-run the build if anything in the C++ build changes
for path in bt_searches.iter() {
println!("cargo:rerun-if-changed={}", path);
}
// "-x" and "c++" must be separate due to a bug
let clang_args: Vec<&str> = vec!["-x", "c++", "-std=c++17"];
// The bindgen::Builder is the main entry point
// to bindgen, and lets you build up options for
// the resulting bindings.
let bindings = bindgen::Builder::default()
.clang_args(bt_searches)
.clang_args(libchrome_paths)
.clang_args(clang_args)
.enable_cxx_namespaces()
.size_t_is_usize(true)
.allowlist_type("(bt_|bthh_|btgatt_|btsdp|bluetooth_sdp).*")
.allowlist_function("(bt_|bthh_|btgatt_|btsdp).*")
.allowlist_function("hal_util_.*")
// We must opaque out std:: in order to prevent bindgen from choking
.opaque_type("std::.*")
// Whitelist std::string though because we use it a lot
.allowlist_type("std::string")
.rustfmt_bindings(true)
.derive_debug(true)
.derive_partialeq(true)
.derive_eq(true)
.derive_default(true)
.header("bindings/wrapper.hpp")
.generate()
.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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