@@ -35,3 +35,8 @@ stamp-h1
# profiling
*.gcda
*.gcno
+
+# Added by cargo
+
+target
+Cargo.lock
new file mode 100644
@@ -0,0 +1,5 @@
+[workspace]
+
+members = [
+ "libgpiod-sys",
+]
new file mode 100644
@@ -0,0 +1,15 @@
+[package]
+name = "libgpiod-sys"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+
+[features]
+generate = [ "bindgen" ]
+
+[build-dependencies]
+bindgen = { version = "0.59.1", optional = true }
+cc = "1.0.46"
new file mode 100644
@@ -0,0 +1,41 @@
+#[cfg(feature = "generate")]
+extern crate bindgen;
+#[cfg(feature = "generate")]
+use std::env;
+#[cfg(feature = "generate")]
+use std::path::PathBuf;
+
+#[cfg(feature = "generate")]
+fn generate_bindings() {
+ // Tell cargo to invalidate the built crate whenever following files change
+ println!("cargo:rerun-if-changed=../../../include/gpiod.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("../../../include/gpiod.h")
+ // 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!");
+}
+
+fn main() {
+ #[cfg(feature = "generate")]
+ generate_bindings();
+
+ println!("cargo:rustc-link-search=./../../lib/.libs/");
+ println!("cargo:rustc-link-lib=static=gpiod");
+}
new file mode 100644
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#[allow(non_camel_case_types, non_upper_case_globals)]
+#[cfg_attr(test, allow(deref_nullptr, non_snake_case))]
+
+mod bindings_raw {
+ #[cfg(feature = "generate")]
+ include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
+
+ #[cfg(not(feature = "generate"))]
+ include!("bindings.rs");
+}
+pub use bindings_raw::*;
This adds libgpiod-sys rust crate, which provides FFI (foreign function interface) bindings for libgpiod APIs. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- .gitignore | 5 ++++ bindings/rust/Cargo.toml | 5 ++++ bindings/rust/libgpiod-sys/Cargo.toml | 15 ++++++++++ bindings/rust/libgpiod-sys/build.rs | 41 +++++++++++++++++++++++++++ bindings/rust/libgpiod-sys/src/lib.rs | 13 +++++++++ 5 files changed, 79 insertions(+) create mode 100644 bindings/rust/Cargo.toml create mode 100644 bindings/rust/libgpiod-sys/Cargo.toml create mode 100644 bindings/rust/libgpiod-sys/build.rs create mode 100644 bindings/rust/libgpiod-sys/src/lib.rs