From d4002dc52b4280b8ad32a94be2a2e1a148195855 Mon Sep 17 00:00:00 2001
From: BruebachL <44814898+BruebachL@users.noreply.github.com>
Date: Sat, 31 Oct 2026 18:52:11 +0100
Subject: [PATCH] [Build] Reject APIs deprecated before Qt 6.4 (#7632)
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Add the deprecation cutoff after FindQtRuntime so the compiler rejects any
API deprecated before the project's minimum Qt version. Qt 6.5 renamed the
switch, so the fallback name is used on 6.4.

The full client, Oracle, server and test build passes with the cutoff
enabled.

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>
---
 CMakeLists.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 159c4a24f..4cdc19911 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -250,6 +250,15 @@ message(STATUS "Update Translations: ${UPDATE_TRANSLATIONS}")
 
 include(FindQtRuntime)
 
+# Reject APIs that were deprecated before the oldest Qt release we support
+# (6.4). Qt 6.5 renamed the switch, so use whichever spelling the found
+# version understands while still compiling everywhere.
+if(Qt6_VERSION VERSION_GREATER_EQUAL 6.5)
+  add_compile_definitions(QT_DISABLE_DEPRECATED_UP_TO=0x060400)
+else()
+  add_compile_definitions(QT_DISABLE_DEPRECATED_BEFORE=0x060400)
+endif()
+
 set(CMAKE_AUTOMOC TRUE)
 
 # Find other needed libraries