From 7395cf0d5360e78e511825b4b5a82b3cc50b4905 Mon Sep 17 00:00:00 2001
From: Lucas Schwiderski <lucas@lschwiderski.de>
Date: Thu, 6 Apr 2023 11:16:14 +0200
Subject: [PATCH] fix: Disable 64bit GC

---
 build.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/build.rs b/build.rs
index 11b3984..2f5fc48 100644
--- a/build.rs
+++ b/build.rs
@@ -90,6 +90,12 @@ fn build_gcc(src_dir: &str) {
     buildcmd.stderr(Stdio::inherit());
     buildcmd.arg("--no-silent");
 
+    // This became enabled by default in https://github.com/LuaJIT/LuaJIT/commit/bd00094c3b50e193fb32aad79b7ea8ea6b78ed25
+    // but changes the generated bytecode. Bitsquid does not have it currently.
+    // The documentation changes in the commit mention that the bytecode change might be "rectified"
+    // in the future, though.
+    buildcmd.arg("XCFLAGS=-DLUAJIT_DISABLE_GC64");
+
     // We do need to cross-compile even here, so that `lj_vm.o` is created
     // for the correct architecture.
     if env::var("CARGO_CFG_WINDOWS").is_ok() {