File opencv-qt6_9-highgui-linking-test.patch of Package opencv

From e7728bb27db9732629bb3f7c7c2c33fe3930b31a Mon Sep 17 00:00:00 2001
From: Atri Bhattacharya <A.Bhattacharya@uliege.be>
Date: Wed, 15 Oct 2025 21:49:04 +0530
Subject: [PATCH] Fixed linking for HighGUI against Qt 6.9 and newer
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Use `link_libraries` instead of `add_defintions` to link against Qt 6.9
and newer to avoid un-expanded generator expressions from Qt cmake files
being appended to linker flags when building the HighGUI module.

The actual bug is likely in how Qt cmake files end up with these
un-expanded generator expressions in the first place — see discussion in
https://bugreports.qt.io/browse/QTBUG-134774 — but the recommended way
to link against the library is to use `link_libraries` anyway, so this
fix should do the trick.

Fixes issue #27223.
---
 modules/highgui/CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/highgui/CMakeLists.txt b/modules/highgui/CMakeLists.txt
index f0a668e4b5ae..ae9c49c1cfae 100644
--- a/modules/highgui/CMakeLists.txt
+++ b/modules/highgui/CMakeLists.txt
@@ -125,7 +125,7 @@ elseif(HAVE_QT)
     endif()
 
     foreach(dt_dep ${qt_deps})
-      add_definitions(${Qt${QT_VERSION_MAJOR}${dt_dep}_DEFINITIONS})
+      link_libraries(${Qt${QT_VERSION_MAJOR}${dt_dep}})
       include_directories(${Qt${QT_VERSION_MAJOR}${dt_dep}_INCLUDE_DIRS})
       list(APPEND HIGHGUI_LIBRARIES ${Qt${QT_VERSION_MAJOR}${dt_dep}_LIBRARIES})
     endforeach()