Use OID

Author: termoshtt

build.rs

@@ -28,24 +28,25 @@ use std::process::Command;
 
 const MKL_ARCHIVE: &'static str = "mkl.tar.xz";
 
-fn get_branch_name<P: AsRef<Path>>(crate_dir: P) -> String {
+fn get_oid<P: AsRef<Path>>(crate_dir: P) -> String {
     let repo = git2::Repository::open(crate_dir).unwrap();
     let head = repo.head().unwrap();
-    head.shorthand().unwrap().to_string()
+    head.target().unwrap().to_string()
 }
 
 fn main() {
     let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
     let crate_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
-    let branch_name = get_branch_name(&crate_dir);
-    if !out_dir.join(MKL_ARCHIVE).exists() {
-        Command::new("wget")
-            .arg(format!("https://github.com/termoshtt/rust-intel-mkl/raw/{}/mkl_lib/mkl.tar.xz",
-                         branch_name))
-            .current_dir(&out_dir)
-            .status()
-            .expect("Failed to start download (maybe 'wget' is missing?)");
-    }
+    let oid = get_oid(&crate_dir);
+    let uri = format!("https://github.com/termoshtt/rust-intel-mkl/raw/{}/mkl_lib/{}",
+                      oid,
+                      MKL_ARCHIVE);
+    println!("Download URI = {}", uri);
+    Command::new("wget")
+        .args(&["-q", &uri, "-O", MKL_ARCHIVE])
+        .current_dir(&out_dir)
+        .status()
+        .expect("Failed to start download (maybe 'wget' is missing?)");
     Command::new("tar")
         .args(&["Jxvf", MKL_ARCHIVE])
         .current_dir(&out_dir)