Change bindings inclusion

This works around the go to definition feature of
rust-analyzer, which otherwise just goes to the `include!`
line. When `#[path = concat!(env!(...), ...)]` works (issue
rust-lang/rust#87681), we should switch to that.

Author: N3xed

.gitignore

@@ -2,3 +2,4 @@
 /target
 /Cargo.lock
 **/*.rs.bk
+/src/bindings.rs

sdk_build_support/main.rs

@@ -369,23 +369,19 @@ pub fn build(build_env: &BuildEnv) -> Result<()> {
 
     // Generate bindings.
     let header_file = path_buf![&manifest_dir, "src", "include", "esp-idf", "bindings.h"];
+    let bindings_file = path_buf![&manifest_dir, "src", "bindings.rs"];
     bindgen::builder()
         .header(format!("{}", header_file.display()))
-        .ctypes_prefix("c_types")
+        .ctypes_prefix("crate::c_types")
         .blocklist_function("(_)?strtold(_r)?")
         .clang_args(clang_args)
         .use_core()
         .detect_include_paths(false)
         .derive_default(true)
         .layout_tests(false)
-        .raw_line("#![allow(broken_intra_doc_links)]")
-        .raw_line("#![allow(non_upper_case_globals)]")
-        .raw_line("#![allow(non_camel_case_types)]")
-        .raw_line("#![allow(non_snake_case)]")
-        .raw_line("use crate::c_types;")
         .generate()
         .or_else(|_| bail!("Failed to generate bindings."))?
-        .write_to_file(out_dir.join("bindings.rs"))
+        .write_to_file(bindings_file)
         .context("Could not write the generated bindings to file.")?;
 
     // Create archive of all libraries and write linker args to file.

src/lib.rs

@@ -10,11 +10,18 @@ mod alloc;
 mod panic;
 mod pthread_rwlock;
 
+#[allow(broken_intra_doc_links)]
+#[allow(non_upper_case_globals)]
+#[allow(non_camel_case_types)]
+#[allow(non_snake_case)]
+mod bindings;
+
 // ESP-IDF current stable version (4.3) has atomics for ESP32S2, but not for ESP32C3
 // The ESP-IDF master branch has atomics for both
 #[cfg(all(esp32c3, not(feature = "espidf_master")))]
 mod atomics_esp32c3;
 
+pub use bindings::*;
 pub use error::*;
 pub use mutex::EspMutex;
 
@@ -54,6 +61,4 @@ pub mod c_types {
     pub type c_ulong = u32;
     pub type c_longlong = i64;
     pub type c_ulonglong = u64;
-}
-
-include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
+}