From 8794844eee024c816aa803d1c4776d1031247820 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Mon, 12 Dec 2022 14:37:41 -0800
Subject: [PATCH] Prevent build.rs rerunning unnecessarily on all source
 changes

---
 build.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/build.rs b/build.rs
index e9ec7d56a..0e12602e4 100644
--- a/build.rs
+++ b/build.rs
@@ -3,6 +3,8 @@ use std::process::Command;
 use std::str::{self, FromStr};
 
 fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
+
     // Decide ideal limb width for arithmetic in the float parser. Refer to
     // src/lexical/math.rs for where this has an effect.
     let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();