From b42e73480acb8d8d186517c8a9c01737982c0e1a Mon Sep 17 00:00:00 2001
From: Andy Killorin <37423245+Speedy6451@users.noreply.github.com>
Date: Tue, 14 May 2024 13:51:26 -0500
Subject: [PATCH] fix spurious linking issue

---
 .cargo/config.toml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.cargo/config.toml b/.cargo/config.toml
index d502ee5..d9defaf 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -3,6 +3,8 @@ target = "avr-specs/avr-atmega328p.json"
 
 [target.'cfg(target_arch = "avr")']
 runner = "ravedude uno -cb 57600"
+# Workaround for: https://github.com/rust-lang/compiler-builtins/issues/420
+rustflags = ["-C", "link-arg=-Wl,--allow-multiple-definition"]
 
 [unstable]
 build-std = ["core"]