1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
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 = [
"/system/",
"/system/btcore",
"/system/include",
"/system/include/hardware",
"/system/log/include",
"/system/types",
];
let bt_searches =
paths.iter().map(|tail| format!("-I{}{}", search_root, tail)).collect::<Vec<String>>();
// Also re-run bindgen if anything in the C++ source changes. Unfortunately the Rust source
// files also reside in the same directory so any changes of Rust files (and other non-C files
// actually) will cause topshim to be rebuild. The TOPSHIM_SHOULD_REBUILD env variable is a
// development tool to speed up build that can be set to "no" if topshim is not expected to be
// change.
let topshim_should_rebuild = match env::var("TOPSHIM_SHOULD_REBUILD") {
Err(_) => true,
Ok(should_rebuild) => should_rebuild != "no",
};
if topshim_should_rebuild {
println!("cargo:rerun-if-changed={}/system/", search_root);
}
// "-x" and "c++" must be separate due to a bug
let clang_args: Vec<&str> = vec!["-x", "c++", "-std=c++20", "-DTARGET_FLOSS"];
// 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)
.blocklist_function("RawAddress_.*")
.blocklist_function(".*Uuid_.*")
.allowlist_type("(bt_|bthh_|btgatt_|btsdp|bluetooth_sdp|btsock_|bthf_|btrc_).*")
.allowlist_type("sock_connect_signal_t")
.allowlist_function("(bt_|bthh_|btgatt_|btsdp|osi_property_get).*")
.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")
.formatter(bindgen::Formatter::Rustfmt)
.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!");
}
|