From 521c248079dd3a60240b1bd651e32ff8b61b5d05 Mon Sep 17 00:00:00 2001
From: Alok Priyadarshi <alok@openai.com>
Date: Fri, 6 Feb 2026 15:25:12 -0800
Subject: [PATCH] fix: respect RUSTC environment variable if set

Fixes #18
---
 build.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/build.rs b/build.rs
index 20cf4a0..a03b8b4 100644
--- a/build.rs
+++ b/build.rs
@@ -25,7 +25,8 @@ fn check_func(function_name: &str) -> bool {
         writeln!(&mut test_file, "}}").unwrap();
     }
 
-    let output = Command::new("rustc").
+    let rustc = env::var_os("RUSTC").unwrap_or_else(|| "rustc".into());
+    let output = Command::new(&rustc).
         arg(&test_file_name).
         arg("--out-dir").arg(&out_dir).
         arg("-l").arg("udev").