Initial commit.

build.rs

@@ -0,0 +1,45 @@
+use std::env;
+use std::path::PathBuf;
+
+fn main() {
+    // Trying to find python3
+    let lib = pkg_config::probe_library("python3").expect("Python3 is not available for linking");
+
+    // The bindgen::Builder is the main entry point
+    // to bindgen, and lets you build up options for
+    // the resulting bindings.
+    let mut bindings_builder = bindgen::Builder::default()
+        // The input header we would like to generate
+        // bindings for.
+        .header("csrc/wrapper.h")
+        // Tell cargo to invalidate the built crate whenever any of the
+        // included header files changed.
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
+        .blocklist_var("FP_INT_UPWARD")
+        .blocklist_var("FP_NORMAL")
+        .blocklist_var("FP_SUBNORMAL")
+        .blocklist_var("FP_INFINITE")
+        .blocklist_var("FP_INT_TONEAREST")
+        .blocklist_var("FP_INT_TONEARESTFROMZERO")
+        .blocklist_var("FP_INT_TOWARDZERO")
+        .blocklist_var("FP_NAN")
+        .blocklist_var("FP_ZERO")
+        .blocklist_var("FP_INT_DOWNWARD");
+    // Finish the builder and generate the bindings.
+    for path in lib.include_paths {
+        let Some(lib_path) = path.as_path().to_str() else {
+            continue;
+        };
+        bindings_builder = bindings_builder.clang_arg(format!("-I{}", lib_path));
+    }
+    let bindings = bindings_builder
+        .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!");
+}