From 1756d0fbd3784f50182fea20f02a7d3d10e7bc6f Mon Sep 17 00:00:00 2001
From: patr0nus <dk4rest@gmail.com>
Date: Tue, 11 May 2021 19:51:51 +0800
Subject: [PATCH] Add back opt_level

---
 libquickjs-sys/build.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libquickjs-sys/build.rs b/libquickjs-sys/build.rs
index 450edb2..8f2bb37 100644
--- a/libquickjs-sys/build.rs
+++ b/libquickjs-sys/build.rs
@@ -90,5 +90,10 @@ fn main() {
         .flag_if_supported("-Wno-cast-function-type")
         .flag_if_supported("-Wno-implicit-fallthrough")
         .flag_if_supported("-Wno-enum-conversion")
+        // cc uses the OPT_LEVEL env var by default, but we hardcode it to -O2
+        // since release builds use -O3 which might be problematic for quickjs,
+        // and debug builds only happen once anyway so the optimization slowdown
+        // is fine.
+        .opt_level(2)
         .compile(LIB_NAME);
 }