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51 lines
1.7 KiB
51 lines
1.7 KiB
5 years ago
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extern crate bindgen;
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extern crate pkg_config;
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use std::env;
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use std::path::PathBuf;
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fn main() {
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let pkgconfig = pkg_config::Config::new();
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let mraa_config = pkgconfig
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.probe("mraa")
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.expect("pkg_config probe failed for mraa");
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let _ = pkgconfig
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.probe("json-c");
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// .expect("pkg_config probe failed for json-c");
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// Tell cargo to invalidate the built crate whenever the wrapper changes
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println!("cargo:rerun-if-changed=src/wrapper.h");
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let mut clang_args: Vec<String> = Vec::new();
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for include_dir in &mraa_config.include_paths {
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clang_args.push("-I".to_owned());
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clang_args.push(include_dir.to_str().unwrap().to_owned());
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}
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// The bindgen::Builder is the main entry point
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// to bindgen, and lets you build up options for
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// the resulting bindings.
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let mraa_bindings = bindgen::Builder::default()
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.clang_args(clang_args)
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// The input header we would like to generate
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// bindings for.
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.header("src/wrapper.h")
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.whitelist_type("mraa_.*")
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.whitelist_function("mraa_.*")
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.whitelist_var("mraa_.*")
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// Tell cargo to invalidate the built crate whenever any of the
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// included header files changed.
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.parse_callbacks(Box::new(bindgen::CargoCallbacks))
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// Finish the builder and generate the bindings.
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.generate()
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// Unwrap the Result and panic on failure.
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.expect("Unable to generate bindings");
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// Write the bindings to the $OUT_DIR/bindings.rs file.
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let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
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mraa_bindings
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.write_to_file(out_path.join("mraa_bindings.rs"))
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.expect("Couldn't write bindings!");
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}
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