Better attempt to fix compilation

Author: sosthene-nitrokey

build.rs

@@ -1,5 +1,5 @@
-use std::env;
 use std::path::PathBuf;
+use std::{env, fs};
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     let mut builder = cc::Build::new();
@@ -31,12 +31,26 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
 
+    println!("cargo:rerun-if-changed=littlefs/lfs.h");
+    let lfs_h = fs::read_to_string("littlefs/lfs.h").unwrap();
+    // Avoid having to bring in newlib for the types that are only ever used in lfs_utils.h
+    let corrected_lfs_h = lfs_h.replace(
+        r#"#include "lfs_util.h""#,
+        r#"#include <stdint.h>
+#include <stdbool.h>"#,
+    );
+    let out_path_corrected_lfs_h = out_path.join("corrected_lfs.h");
+    fs::write(&out_path_corrected_lfs_h, corrected_lfs_h).unwrap();
+
     let bindgen = bindgen::Builder::default()
-        .header("littlefs/lfs.h")
+        .header(
+            out_path_corrected_lfs_h
+                .to_str()
+                .expect("Path must be utf-8"),
+        )
         .clang_arg("-std=c99")
         .clang_arg("-DLFS_NO_DEBUG")
-        .clang_arg("-DLFS_NO_WARN")
-        .clang_arg("-DLFS_NO_ERROR");
+        .clang_arg("-DLFS_NO_WARN");
     #[cfg(feature = "multiversion")]
     let bindgen = bindgen.clang_arg("-DLFS_MULTIVERSION");