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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!");
}