78 lines
3.0 KiB
Rust
78 lines
3.0 KiB
Rust
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use pkg_config::Config;
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use std::env;
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use std::path::PathBuf;
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fn main() {
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// Re-run build if any of these change
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println!("cargo:rerun-if-changed=bindings/wrapper.hpp");
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println!("cargo:rerun-if-changed=build.rs");
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// We need to configure libchrome and libmodp_b64 settings as well
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let libchrome = Config::new().probe("libchrome").unwrap();
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let libchrome_paths = libchrome
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.include_paths
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.iter()
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.map(|p| format!("-I{}", p.to_str().unwrap()))
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.collect::<Vec<String>>();
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let search_root = env::var("CXX_ROOT_PATH").unwrap();
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let paths = vec![
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"/system/",
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"/system/btcore",
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"/system/include",
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"/system/include/hardware",
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"/system/types",
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];
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let bt_searches =
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paths.iter().map(|tail| format!("-I{}{}", search_root, tail)).collect::<Vec<String>>();
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// Also re-run bindgen if anything in the C++ source changes. Unfortunately the Rust source
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// files also reside in the same directory so any changes of Rust files (and other non-C files
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// actually) will cause topshim to be rebuild. The TOPSHIM_SHOULD_REBUILD env variable is a
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// development tool to speed up build that can be set to "no" if topshim is not expected to be
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// change.
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let topshim_should_rebuild = match env::var("TOPSHIM_SHOULD_REBUILD") {
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Err(_) => true,
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Ok(should_rebuild) => should_rebuild != "no",
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};
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if topshim_should_rebuild {
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println!("cargo:rerun-if-changed={}{}", search_root, "/system/");
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}
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// "-x" and "c++" must be separate due to a bug
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let clang_args: Vec<&str> = vec!["-x", "c++", "-std=c++17"];
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// The bindgen::Builder is the main entry point
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// to bindgen, and lets you build up options for
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// the resulting bindings.
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let bindings = bindgen::Builder::default()
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.clang_args(bt_searches)
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.clang_args(libchrome_paths)
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.clang_args(clang_args)
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.enable_cxx_namespaces()
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.size_t_is_usize(true)
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.blocklist_function("RawAddress_.*")
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.blocklist_function(".*Uuid_.*")
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.allowlist_type("(bt_|bthh_|btgatt_|btsdp|bluetooth_sdp|btsock_|bthf_|btrc_).*")
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.allowlist_type("sock_connect_signal_t")
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.allowlist_function("(bt_|bthh_|btgatt_|btsdp|osi_property_get).*")
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.allowlist_function("hal_util_.*")
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// We must opaque out std:: in order to prevent bindgen from choking
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.opaque_type("std::.*")
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// Whitelist std::string though because we use it a lot
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.allowlist_type("std::string")
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.rustfmt_bindings(true)
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.derive_debug(true)
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.derive_partialeq(true)
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.derive_eq(true)
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.derive_default(true)
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.header("bindings/wrapper.hpp")
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.generate()
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.expect("Unable to generate bindings");
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// Write the bindings to the $OUT_DIR/bindings.rs file.
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let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
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bindings.write_to_file(out_path.join("bindings.rs")).expect("Couldn't write bindings!");
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}
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