[prev in list] [next in list] [prev in thread] [next in thread]
List: linux-gpio
Subject: [libgpiod v2][PATCH V8 1/9] bindings: rust: Add libgpiod-sys rust crate
From: Viresh Kumar <viresh.kumar () linaro ! org>
Date: 2022-10-31 11:59:09
Message-ID: 8762a113cf8540e4dd56e45b187925b06f8b72c5.1667215380.git.viresh.kumar () linaro ! org
[Download RAW message or body]
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 | 22 ++++++++++++++
bindings/rust/libgpiod-sys/build.rs | 41 +++++++++++++++++++++++++++
bindings/rust/libgpiod-sys/src/lib.rs | 13 +++++++++
5 files changed, 86 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
diff --git a/.gitignore b/.gitignore
index 6c08415b390d..9f2fcf440c5d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,8 @@ stamp-h1
# profiling
*.gcda
*.gcno
+
+# Added by cargo
+
+target
+Cargo.lock
diff --git a/bindings/rust/Cargo.toml b/bindings/rust/Cargo.toml
new file mode 100644
index 000000000000..c7bbcc798920
--- /dev/null
+++ b/bindings/rust/Cargo.toml
@@ -0,0 +1,5 @@
+[workspace]
+
+members = [
+ "libgpiod-sys"
+]
diff --git a/bindings/rust/libgpiod-sys/Cargo.toml b/bindings/rust/libgpiod-sys/Cargo.toml
new file mode 100644
index 000000000000..716dde551263
--- /dev/null
+++ b/bindings/rust/libgpiod-sys/Cargo.toml
@@ -0,0 +1,22 @@
+[package]
+name = "libgpiod-sys"
+version = "0.1.0"
+authors = ["Viresh Kumar <viresh.kumar@linaro.org>"]
+description = "libgpiod public header bindings"
+repository = "https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git"
+categories = ["external-ffi-bindings", "os::linux-apis"]
+rust-version = "1.56"
+keywords = ["libgpiod", "gpio"]
+license = "Apache-2.0 OR BSD-3-Clause"
+edition = "2021"
+
+# 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"
diff --git a/bindings/rust/libgpiod-sys/build.rs b/bindings/rust/libgpiod-sys/build.rs
new file mode 100644
index 000000000000..98863686c7af
--- /dev/null
+++ b/bindings/rust/libgpiod-sys/build.rs
@@ -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");
+}
diff --git a/bindings/rust/libgpiod-sys/src/lib.rs b/bindings/rust/libgpiod-sys/src/lib.rs
new file mode 100644
index 000000000000..a1d1db19afe3
--- /dev/null
+++ b/bindings/rust/libgpiod-sys/src/lib.rs
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
+
+#[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::*;
--
2.31.1.272.g89b43f80a514
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic