use std::env; fn main() { println!("cargo:rustc-link-lib=Leap"); println!("cargo:rerun-if-changed=wrapper.hpp"); println!("cargo:rerun-if-changed=wrapper.cpp"); println!("cargo:rerun-if-env-changed=LEAPCPP_REGEN"); println!("cargo:rerun-if-env-changed=LEAPCPP_NO_LINK"); println!("cargo:rerun-if-env-changed=DOCS_RS"); // docs.rs does not have the Leap SDK installed (of course), but we only need it for linking. if env::var_os("DOCS_RS").is_none() && env::var_os("LEAPCPP_NO_LINK").is_none() { // Compile and link against our wrapper cc::Build::new() .cpp(true) .file("wrapper.cpp") .compile("LeapRust"); } #[cfg(feature = "regen")] if env::var_os("LEAPCPP_REGEN").is_some() { regenerate_bindings(); } } #[cfg(feature = "regen")] fn regenerate_bindings() { use std::path::PathBuf; // 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.hpp") // Tell cargo to invalidate the built crate whenever any of the // included header files changed. .parse_callbacks(Box::new(bindgen::CargoCallbacks)) .allowlist_function("Leap.*") .allowlist_type("Leap.*") .allowlist_var("Leap.*") .opaque_type("std::.*") // 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 out_path = PathBuf::from("./src"); bindings .write_to_file(out_path.join("bindings.rs")) .expect("Couldn't write bindings!"); }