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extern crate bindgen;
use std::env;
use std::path::{Path, PathBuf};
fn main() {
let lcnc_relative_path = "./linuxcnc-src/lib";
let root = env!("CARGO_MANIFEST_DIR");
let lcnc_lib_path = format!("{}/{}", root, lcnc_relative_path);
let lcnc_lib_path = Path::new(&lcnc_lib_path)
.canonicalize()
.expect("Failed to canonicalize LinuxCNC search path");
// Link to compiled LinuxCNC `liblinuxcnc.hal.so` library
println!(
"cargo:rustc-link-search={}",
lcnc_lib_path.to_str().unwrap()
);
println!("cargo:rustc-link-lib=linuxcnchal");
// 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")
// Source files from LinuxCNC include folder. LinuxCNC must be built for this to work - see
// README.md for details.
.clang_arg("-Ilinuxcnc-src/include")
// 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!");
}