diff --git a/srcpkgs/openmw/patches/openmw-0.47.0-gcc12.patch b/srcpkgs/openmw/patches/openmw-0.47.0-gcc12.patch
new file mode 100644
index 00000000000..4c04d7b25c7
--- /dev/null
+++ b/srcpkgs/openmw/patches/openmw-0.47.0-gcc12.patch
@@ -0,0 +1,33 @@
+Backport missing includes causing issues with gcc12.
+https://bugs.gentoo.org/858725
+https://gitlab.com/OpenMW/openmw/-/commit/5f2e282359
+From: elsid <elsid.mail@gmail.com>
+Date: Tue, 17 May 2022 00:58:24 +0200
+Subject: [PATCH] Add includes for used types and functions
+--- a/components/myguiplatform/myguidatamanager.cpp
++++ b/components/myguiplatform/myguidatamanager.cpp
+@@ -1,8 +1,11 @@
+ #include "myguidatamanager.hpp"
+ 
++#include <memory>
++#include <string>
++
+ #include <MyGUI_DataFileStream.h>
+ 
+-#include <boost/filesystem.hpp>
++#include <boost/filesystem/operations.hpp>
+ #include <boost/filesystem/fstream.hpp>
+ 
+ #include <components/debug/debuglog.hpp>
+--- a/components/myguiplatform/myguidatamanager.hpp
++++ b/components/myguiplatform/myguidatamanager.hpp
+@@ -3,6 +3,8 @@
+ 
+ #include <MyGUI_DataManager.h>
+ 
++#include <string>
++
+ namespace osgMyGUI
+ {
+ 
+GitLab