Put custom link script at the proper location

cargo-ledger/src/setup.rs

@@ -40,31 +40,41 @@ pub fn install_targets() {
         }
     }
 
-    // Install link_wrap.sh script needed for relocation into proper location
-    let target_host = std::str::from_utf8(
-        Command::new("rustup")
-            .arg("default")
-            .output()
-            .expect("failed to call rustup")
-            .stdout
-            .as_slice(),
-    )
-    .unwrap();
+    // Install link_wrap.sh script needed for relocation
+    println!("[ ] Install custom link script...");
 
-    let start = target_host.find('-')? + 1;
-    let end = target_host.find(' ').unwrap() + start;
-    println!(
-        " Output folder for custom link script {}",
-        &target_host[start..end]
-    );
+    /*  Shall be put at the same place as rust-lld */
+    let custom_link_script = "link_wrap.sh";
+
+    let cmd = Command::new("find")
+        .arg(sysroot_cmd)
+        .arg("-name")
+        .arg("rust-lld")
+        .output()
+        .expect("failed to find rust-lld linker")
+        .stdout;
+
+    let rust_lld_path = std::str::from_utf8(&cmd).unwrap();
+    let end = rust_lld_path.rfind('/').unwrap();
 
     let outfilepath =
-        sysroot.join(&target_host[start..end]).join("link_wrap.sh");
-    let target_url = target_files_url.join("link_wrap.sh");
-    let cmd = Command::new("curl")
+        sysroot.join(&rust_lld_path[..end]).join(custom_link_script);
+
+    /* Retrieve the linker script */
+    let target_url = target_files_url.join(custom_link_script);
+    Command::new("curl")
         .arg(target_url)
         .arg("-o")
-        .arg(outfilepath)
+        .arg(&outfilepath)
         .output()
         .expect("failed to execute 'curl'");
+
+    println!("* Custom link script is {}", outfilepath.display());
+
+    /* Make the linker script executable */
+    Command::new("chmod")
+        .arg("+x")
+        .arg(outfilepath)
+        .output()
+        .expect("failed to execute chmod");
 }