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extern crate bindgen;
use std::env;
use std::path::PathBuf;
fn main() {
let lib_path = option_env!("LIB_PATH").unwrap_or("/usr/local/lib");
// Tell cargo to look for shared libraries in the specified directory
println!("cargo:rustc-link-search={}",lib_path);
println!("cargo:rustc-link-arg=-Wl,-rpath,{}",lib_path);
// Tell cargo to tell rustc to link the system getargv
// shared library.
println!("cargo:rustc-link-lib=getargv");
// Tell cargo to invalidate the built crate whenever the wrapper changes
println!("cargo:rerun-if-changed=wrapper.h");
// Tell rust/cargo/bindgen where llvm-config is
let key = "LLVM_CONFIG_PATH";
env::set_var(key, env::var(key).unwrap_or_else(|_|"/usr/local/opt/llvm/bin/llvm-config".to_string()));
// 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")
// Tell cargo to invalidate the built crate whenever any of the
// included header files changed.
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
// Allow emitting desired fns by name
.allowlist_function(".*_of_pid")
// Allow emitting desired types by name
.allowlist_type(".*Argv.*")
// 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!");
}