Vendor things

third-party/vendor/bindgen/build.rs

@@ -0,0 +1,29 @@
+use std::env;
+use std::fs::File;
+use std::io::Write;
+use std::path::{Path, PathBuf};
+
+fn main() {
+    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
+
+    let mut dst =
+        File::create(Path::new(&out_dir).join("host-target.txt")).unwrap();
+    dst.write_all(env::var("TARGET").unwrap().as_bytes())
+        .unwrap();
+
+    // On behalf of clang_sys, rebuild ourselves if important configuration
+    // variables change, to ensure that bindings get rebuilt if the
+    // underlying libclang changes.
+    println!("cargo:rerun-if-env-changed=LLVM_CONFIG_PATH");
+    println!("cargo:rerun-if-env-changed=LIBCLANG_PATH");
+    println!("cargo:rerun-if-env-changed=LIBCLANG_STATIC_PATH");
+    println!("cargo:rerun-if-env-changed=BINDGEN_EXTRA_CLANG_ARGS");
+    println!(
+        "cargo:rerun-if-env-changed=BINDGEN_EXTRA_CLANG_ARGS_{}",
+        std::env::var("TARGET").unwrap()
+    );
+    println!(
+        "cargo:rerun-if-env-changed=BINDGEN_EXTRA_CLANG_ARGS_{}",
+        std::env::var("TARGET").unwrap().replace('-', "_")
+    );
+}