From 6c52d9bcf2ce65b3183a70d9122abc5009f98ec0 Mon Sep 17 00:00:00 2001
From: Sympatron GmbH <35803463+Sympatron@users.noreply.github.com>
Date: Fri, 27 Sep 2024 22:16:46 +0200
Subject: [PATCH] Make libosdp-sys no_std compatible

---
 libosdp-sys/Cargo.toml | 4 +++-
 libosdp-sys/build.rs   | 5 ++---
 libosdp-sys/src/lib.rs | 1 +
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/libosdp-sys/Cargo.toml b/libosdp-sys/Cargo.toml
index 67dab7b..0181ef1 100644
--- a/libosdp-sys/Cargo.toml
+++ b/libosdp-sys/Cargo.toml
@@ -14,11 +14,13 @@ categories = ["development-tools", "embedded"]
 
 [build-dependencies]
 anyhow = "1.0.75"
-bindgen = "0.69.1"
+bindgen = "0.70.0"
 build-target = "0.4.0"
 cc = "1.0.83"
 
 [features]
+default = ["std"]
+std = []
 packet_trace = []
 data_trace = []
 skip_mark_byte = []
diff --git a/libosdp-sys/build.rs b/libosdp-sys/build.rs
index 5f23ca0..6946d9a 100644
--- a/libosdp-sys/build.rs
+++ b/libosdp-sys/build.rs
@@ -166,10 +166,9 @@ fn main() -> Result<()> {
 
     /* generate bindings */
 
-    let args = vec![
-        format!("-I{}", &out_dir),
-    ];
+    let args = vec![format!("-I{}", &out_dir)];
     let bindings = bindgen::Builder::default()
+        .use_core()
         .header("vendor/include/osdp.h")
         .clang_args(args)
         .generate()
diff --git a/libosdp-sys/src/lib.rs b/libosdp-sys/src/lib.rs
index d64b2be..0d4683b 100644
--- a/libosdp-sys/src/lib.rs
+++ b/libosdp-sys/src/lib.rs
@@ -1,3 +1,4 @@
+#![cfg_attr(not(feature = "std"), no_std)]
 //! Auto generated (bindgen) wrapper for LibOSDP C API exposed from osdp.h
 //! [here](https://github.com/goToMain/libosdp/blob/master/include/osdp.h).