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extern crate bindgen;
use std::env;
use std::path::PathBuf;
use std::process::Command;
fn main() {
let out_dir = env::var("OUT_DIR").unwrap();
// This is the directory where the `c` library is located.
let libdir_path = PathBuf::from("vendor")
// Canonicalize the path as `rustc-link-search` requires an absolute
// path.
.canonicalize()
.expect("cannot canonicalize path");
// This is the path to the `c` headers file.
let headers_path = libdir_path.join("include").join("basiclu.h");
let headers_path_str = headers_path.to_str().expect("Path is not a valid string");
// This is the path to the intermediate object file for our library.
// let obj_path = libdir_path.join("hello.o");
// This is the path to the static library file.
// let lib_path = libdir_path.join("lib").join("libbasiclu.a");
// Tell cargo to look for shared libraries in the specified directory
// println!(
// "cargo:rustc-link-search={}",
// libdir_path.join("lib").to_str().unwrap()
// );
println!("cargo:rustc-link-search={}", out_dir);
// Tell cargo to tell rustc to link our `hello` library. Cargo will
// automatically know it must look for a `libhello.a` file.
println!("cargo:rustc-link-lib=basiclu");
// Tell cargo to invalidate the built crate whenever the header changes.
println!("cargo:rerun-if-changed={}", headers_path_str);
// compile basiclu library: OS dependant
// if cfg!(target_os = "linux") {
// makefile is using a special env variable
let out = Command::new("make")
// .env("VENDOR_DIR", libdir_path.to_str().unwrap())
.args(&[
"-C",
libdir_path.to_str().unwrap(),
"static",
"install",
"purge",
])
.output()
.expect("could not spawn `make`");
assert!(out.status.success(), "{:?}", out);
// }
// Tell cargo to look for shared libraries in the specified directory
// println!("cargo:rustc-link-search=/path/to/lib");
// Tell cargo to tell rustc to link the system bzip2
// shared library.
// println!("cargo:rustc-link-lib=bz2");
// Tell cargo to invalidate the built crate whenever the wrapper changes
// 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 bindings = bindgen::Builder::default()
// The input header we would like to generate
// bindings for.
// .header("wrapper.h")
.header(headers_path_str)
// Tell cargo to invalidate the built crate whenever any of the
// included header files changed.
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
// Finish the builder and generate the bindings.
.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!");
}