From 9732b8c6d8ed0efce6dfed4aa567ab3defd5c84b Mon Sep 17 00:00:00 2001
From: Aaron Franke <arnfranke@yahoo.com>
Date: Sun, 17 Dec 2023 11:45:31 -0600
Subject: [PATCH] Allow detecting when building as a GDExtension

---
 tools/godotcpp.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/godotcpp.py b/tools/godotcpp.py
index e445cad379..0da12318a7 100644
--- a/tools/godotcpp.py
+++ b/tools/godotcpp.py
@@ -295,6 +295,9 @@ def generate(env):
     if env["precision"] == "double":
         env.Append(CPPDEFINES=["REAL_T_IS_DOUBLE"])
 
+    # Allow detecting when building as a GDExtension.
+    env.Append(CPPDEFINES=["GODOT_GDEXTENSION"])
+
     # Suffix
     suffix = ".{}.{}".format(env["platform"], env["target"])
     if env.dev_build: