From 11592ad3fc9085f720034a3b9838c365edbc131e Mon Sep 17 00:00:00 2001
From: Joerg Bornemann <joerg.bornemann@qt.io>
Date: Thu, 4 Jul 2024 11:14:31 +0200
Subject: [PATCH] CMake: Fix unity build for gcc < 13

GCC 12 erroneously yields -Wsubobject-linkage in a unity build.
Un-unity qresource.cpp for GCC 12 and older.

Change-Id: Ie3aced2668ec8aae797d89ce28a3e5917a6e8f88
Reviewed-by:  Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
(cherry picked from commit a06e54d2c88934f1511768d7254e12e6294e6336)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/corelib/CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/corelib/CMakeLists.txt b/src/corelib/CMakeLists.txt
index ed3a544e3f3..bb0fd0bb9f3 100644
--- a/src/corelib/CMakeLists.txt
+++ b/src/corelib/CMakeLists.txt
@@ -594,6 +594,11 @@ qt_internal_extend_target(Core CONDITION WIN32
         tools/qhash.cpp # Q_DECL_INIT_PRIORITY
 )
 
+qt_internal_extend_target(Core CONDITION GCC AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "13"
+    NO_UNITY_BUILD_SOURCES
+        io/qresource.cpp io/qresource.h io/qresource_p.h # -Werror=subobject-linkage
+)
+
 if(NOT WIN32)
     ### Qt7: remove
     # Make qwineventnotifier.h available on non-Windows platforms too for code bases that include