Allow GDExtensions to set a compatibility_maximum

core/extension/gdextension.cpp

@@ -914,6 +914,35 @@ Error GDExtensionResourceLoader::load_gdextension_resource(const String &p_path,
  return ERR_INVALID_DATA;
  }
 
+ // Optionally check maximum compatibility.
+ if (config->has_section_key("configuration", "compatibility_maximum")) {
+ uint32_t compatibility_maximum[3] = { 0, 0, 0 };
+ String compat_string = config->get_value("configuration", "compatibility_maximum");
+ Vector<int> parts = compat_string.split_ints(".");
+ for (int i = 0; i < 3; i++) {
+ if (i < parts.size() && parts[i] >= 0) {
+ compatibility_maximum[i] = parts[i];
+ } else {
+ // If a version part is missing, set the maximum to an arbitrary high value.
+ compatibility_maximum[i] = 9999;
+ }
+ }
+
+ compatible = true;
+ if (VERSION_MAJOR != compatibility_maximum[0]) {
+ compatible = VERSION_MAJOR < compatibility_maximum[0];
+ } else if (VERSION_MINOR != compatibility_maximum[1]) {
+ compatible = VERSION_MINOR < compatibility_maximum[1];
+ } else {
+ compatible = VERSION_PATCH <= compatibility_maximum[2];
+ }
+
+ if (!compatible) {
+ ERR_PRINT(vformat("GDExtension only compatible with Godot version %s or earlier: %s", compat_string, p_path));
+ return ERR_INVALID_DATA;
+ }
+ }
+
  String library_path = GDExtension::find_extension_library(p_path, config, [](const String &p_feature) { return OS::get_singleton()->has_feature(p_feature); });
 
  if (library_path.is_empty()) {