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extern crate bindgen;
use std::env;
use std::path::{Path, PathBuf};
use std::process::Command;
fn main() {
// 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")
.clang_arg("-Ilinuxcnc-src/src/hal")
.clang_arg("-Ilinuxcnc-src/src/rtapi")
// Tell LinuxCNC build to run in non-realtime mode
// See line ~114 in linuxcnc-src/src/hal/hal.h
.clang_arg("-DULAPI")
// 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!");
let lcnc_relative_path = "./linuxcnc-src/lib";
let root = env!("CARGO_MANIFEST_DIR");
let lcnc_lib_path = Path::new(&root)
.join(lcnc_relative_path)
.canonicalize()
.expect("Failed to canonicalize LinuxCNC search path");
// Convert shared lib to static lib
Command::new("ar")
.args(&[
"crs",
&format!("{}/liblinuxcnchal.a", out_path.display()),
&format!("{}/liblinuxcnchal.so.0", lcnc_lib_path.display()),
])
.status()
.unwrap();
// Link to static compiled LinuxCNC `liblinuxcnchal.a` library
println!("cargo:rustc-link-search=native={}", out_path.display());
println!("cargo:rustc-link-lib=static=linuxcnchal");
}