| /* |
| * SPDX-License-Identifier: Apache-2.0 |
| * Copyright 2020 Casper Meijn <casper@meijn.net> |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| extern crate bindgen; |
| |
| use std::env; |
| use std::path::PathBuf; |
| use std::process::Command; |
| use std::str; |
| |
| fn main() { |
| let out_path = PathBuf::from(env::var("OUT_DIR").unwrap()).join("bindings.rs"); |
| |
| let mut builder = bindgen::Builder::default() |
| .use_core() |
| .derive_default(true) |
| .ctypes_prefix("cty") |
| .parse_callbacks(Box::new(bindgen::CargoCallbacks)) |
| .header("wrapper.h"); |
| println!("cargo:rerun-if-changed=wrapper.h"); |
| |
| // If available, set the sysroot as mynewt would do |
| if let Ok(cc_path) = env::var("MYNEWT_CC_PATH") { |
| let cc_output = Command::new(cc_path) |
| .arg("-print-sysroot") |
| .output() |
| .expect("failed to execute gcc"); |
| if !cc_output.status.success() { |
| panic!("Error: C-compiler failed to provide sysroot"); |
| } |
| let sysroot_path = str::from_utf8(&cc_output.stdout).unwrap().trim(); |
| builder = builder.clang_arg(format!("--sysroot={}", sysroot_path)); |
| } |
| |
| // If available, set the include directories as mynewt would do |
| if let Ok(include_path_list) = env::var("MYNEWT_INCLUDE_PATH") { |
| for include_path in include_path_list.split(":") { |
| builder = builder.clang_arg("--include-directory=".to_owned() + include_path); |
| } |
| } |
| // If available, set the CFLAGS as mynewt would do |
| if let Ok(cflag_list) = env::var("MYNEWT_CFLAGS") { |
| for cflag in cflag_list.split(" ") { |
| builder = builder.clang_arg(cflag); |
| } |
| } |
| |
| builder |
| .generate() |
| .map_err(|_| "Failed to generate") |
| .unwrap() |
| .write_to_file(out_path) |
| .map_err(|e| format!("Failed to write output: {}", e)) |
| .unwrap(); |
| } |