1 files changed, 4 insertions, 0 deletions
diff --git a/source/blender/blenkernel/BKE_main.h b/source/blender/blenkernel/BKE_main.h
index ed930fe539d..ae60a5563b5 100644
--- a/source/blender/blenkernel/BKE_main.h
+++ b/source/blender/blenkernel/BKE_main.h
@@ -48,6 +48,7 @@ struct BLI_mempool;
 struct BlendThumbnail;
 struct GHash;
 struct GSet;
+struct IDNameLib_Map;
 struct ImBuf;
 struct Library;
 struct MainLock;
@@ -191,6 +192,9 @@ typedef struct Main {
    */
   struct MainIDRelations *relations;
 
+  /* IDMap of IDs. Currently used when reading (expanding) libraries. */
+  struct IDNameLib_Map *id_map;
+
   struct MainLock *lock;
 } Main;