FIX: separated situation of building/installing on target_include_directories on cmake

SEE:	godotengine#1966

 Changes to be committed:
	- modified:   binding_generator.py
	- modified:   cmake/godotcpp.cmake
	- modified:   include/godot_cpp/core/object.hpp

Author: Dalmurii

binding_generator.py

@@ -768,7 +768,10 @@ def generate_builtin_class_header(builtin_api, size, used_classes, fully_used_cl
 
     result.append(f"class {class_name} {{")
     result.append(f"\tstatic constexpr size_t {snake_class_name}_SIZE = {size};")
-    result.append(f"\tuint8_t opaque[{snake_class_name}_SIZE] = {{}};")
+    # We don't get alignment information from the JSON so we have to guess.
+    # This logic should be correct for all built-in types as they exist right now.
+    alignment = 8 if size >= 8 else 4
+    result.append(f"\talignas({alignment}) uint8_t opaque[{snake_class_name}_SIZE] = {{}};")
 
     result.append("")
     result.append("\tfriend class Variant;")

cmake/godotcpp.cmake

@@ -371,7 +371,9 @@ function(godotcpp_generate)
     target_include_directories(
         godot-cpp
         ${GODOTCPP_SYSTEM_HEADERS_ATTRIBUTE}
-        PUBLIC include ${CMAKE_CURRENT_BINARY_DIR}/gen/include
+        PUBLIC
+		$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/gen/include>
+		$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
     )
 
     # gersemi: off

include/godot_cpp/core/object.hpp

@@ -70,7 +70,7 @@ struct MethodInfo {
 	GDExtensionClassMethodArgumentMetadata return_val_metadata;
 	LocalVector<GDExtensionClassMethodArgumentMetadata> arguments_metadata;
 
-	inline bool operator==(const MethodInfo &p_method) const { return id == p_method.id; }
+	inline bool operator==(const MethodInfo &p_method) const { return id == p_method.id && name == p_method.name; }
 	inline bool operator<(const MethodInfo &p_method) const { return id == p_method.id ? (name < p_method.name) : (id < p_method.id); }
 
 	operator Dictionary() const;