From 97ca72f7f10619d4d2a3f7cd19cd8f3f7308d60f Mon Sep 17 00:00:00 2001
From: pca006132 <jl@m-labs.hk>
Date: Thu, 6 Jan 2022 14:04:04 +0800
Subject: [PATCH] libunwind: enable lto

---
 src/libunwind/build.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libunwind/build.rs b/src/libunwind/build.rs
index 51dc16cf..0c06c67f 100644
--- a/src/libunwind/build.rs
+++ b/src/libunwind/build.rs
@@ -23,6 +23,7 @@ mod llvm_libunwind {
         cfg.flag("-fno-stack-protector");
         cfg.flag("--target=armv7-none-eabihf");
         cfg.flag("-O2");
+        cfg.flag("-flto");
 
         cfg.flag("-std=c99");
         cfg.flag("-fstrict-aliasing");