commit 4b560fe79047893f90d3e51a22b304ad27a19e59
Author: Moritz Bitsch <moritz@h6t.eu>
Date:   Tue Nov 21 18:22:49 2023 +0100

    initial import

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4fffb2f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..36cc42e
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "zephyr-config"
+version = "0.1.0"
+edition = "2021"
+
+[build-dependencies]
+bindgen = "0.69.1"
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..743f589
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,42 @@
+extern crate bindgen;
+
+use std::{env, path::PathBuf};
+
+fn main() {
+    let zephyr_sdk_install_dir = PathBuf::from(env::var("ZEPHYR_SDK_INSTALL_DIR").unwrap());
+
+    let bindings = bindgen::Builder::default()
+        // Only use core, as we are in embedded land
+        .use_core()
+        // The input header we would like to generate
+        // bindings for.
+        .header("src/wrapper.h")
+        .clang_args(
+            env::var("TARGET_CFLAGS")
+                .unwrap()
+                .split(' ')
+                .filter(|&el| el != "-mfp16-format=ieee" && el != "-fno-reorder-functions"),
+        )
+        .clang_arg(format!(
+            "-I{}",
+            zephyr_sdk_install_dir
+                .join("arm-zephyr-eabi/arm-zephyr-eabi/sys-include")
+                .to_str()
+                .unwrap()
+        ))
+        // only allow CONFIG_ defines
+        .allowlist_item("^CONFIG_.*")
+        // Tell cargo to invalidate the built crate whenever any of the
+        // included header files changed.
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
+        // 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!");
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..4d04108
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,13 @@
+#![no_std]
+#![allow(non_upper_case_globals)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+#![allow(dead_code)]
+include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
+
+pub fn config_str<'a>(var: &'a [u8]) -> &'a str {
+    core::ffi::CStr::from_bytes_until_nul(var)
+        .unwrap()
+        .to_str()
+        .unwrap()
+}
diff --git a/src/wrapper.h b/src/wrapper.h
new file mode 100644
index 0000000..91657d7
--- /dev/null
+++ b/src/wrapper.h
@@ -0,0 +1 @@
+#include <autoconf.h>
\ No newline at end of file