From 78498da7c329141ba3c54e43561bf470a86b3dab Mon Sep 17 00:00:00 2001
From: Fabio Alessandrelli <fabio.alessandrelli@gmail.com>
Date: Mon, 23 Sep 2024 13:29:40 +0200
Subject: [PATCH] [SCons] Enable WASM_BIGINT in web builds

Required since Godot 4.3, which is also the first Godot version with
wide WASM gdnative support (previous versions were Chrome-only, and very
brittle).
---
 tools/web.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/web.py b/tools/web.py
index c8f07c55..e878a78f 100644
--- a/tools/web.py
+++ b/tools/web.py
@@ -42,6 +42,10 @@ def generate(env):
     env.Append(CCFLAGS=["-sSIDE_MODULE=1"])
     env.Append(LINKFLAGS=["-sSIDE_MODULE=1"])
 
+    # Enable WebAssembly BigInt <-> i64 conversion.
+    # This must match the flag used to build Godot (true in official builds since 4.3)
+    env.Append(LINKFLAGS=["-sWASM_BIGINT"])
+
     # Force wasm longjmp mode.
     env.Append(CCFLAGS=["-sSUPPORT_LONGJMP='wasm'"])
     env.Append(LINKFLAGS=["-sSUPPORT_LONGJMP='wasm'"])