--- opencv_contrib/modules/ovis/CMakeLists.txt.orig	2022-09-06 17:53:02.000000000 -0400
+++ opencv_contrib/modules/ovis/CMakeLists.txt	2022-09-06 17:54:01.000000000 -0400
@@ -1,5 +1,7 @@
 set(the_description "OGRE 3D Visualiser.")
 
+if(WITH_OGRE)
+
 find_package(OGRE QUIET CONFIG)
 
 if(NOT OGRE_FOUND)
@@ -28,3 +30,5 @@
 
 ocv_warnings_disable(CMAKE_CXX_FLAGS -Wunused-parameter)
 ocv_target_link_libraries(${the_module} ${OGRE_LIBRARIES})
+
+endif(WITH_OGRE)