From 686f4310f94bda0daa3452ea842dc431d4cd60fd Mon Sep 17 00:00:00 2001
From: Alejandro Martinez <amtriathlon@gmail.com>
Date: Sat, 17 Jan 2026 13:56:31 -0300
Subject: [PATCH] Revert to Qt 6.5.3 for macOS builds

A user reported having severe performance issues on macOS Tahoe
with v3.8-DEV2601 not present when using v3.7-sp1
Besides 6.5.3 is LTS and 6.6.1 is deprecated, so lets play safe
until we can upgrade to 6.8.3
---
 appveyor.yml             | 4 ++--
 src/Train/KurtInRide.cpp | 5 +++++
 src/src.pro              | 2 +-
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/appveyor.yml b/appveyor.yml
index 45328863a..79e430dce 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -81,8 +81,8 @@ init:
       qmake --version
     else
       export OS_NAME=macos
-      # Setup QT 6.6
-      export QTDIR=$HOME/Qt/6.6/macos
+      # Setup QT 6.5
+      export QTDIR=$HOME/Qt/6.5/macos
       export PATH=$QTDIR/bin:$PATH
       qmake --version
       # Setup Xcode 15.2
diff --git a/src/Train/KurtInRide.cpp b/src/Train/KurtInRide.cpp
index d691c298a..33bce5a5f 100644
--- a/src/Train/KurtInRide.cpp
+++ b/src/Train/KurtInRide.cpp
@@ -160,7 +160,12 @@ void inride_BTDeviceInfoToSystemID(const QBluetoothDeviceInfo &devinfo, uint8_t
 
         quint128 be_uuid128 = uuid.toUInt128();
 
+// GC minimum Qt required for v3.8 is Qt6.5.3
+#if QT_VERSION < 0x060600
+        addr64 = *(uint64_t*)be_uuid128.data;
+#else
         addr64 = *(uint64_t*)&be_uuid128;
+#endif
     }
 
     uint8_t* paddr64 = (uint8_t*)&addr64;
diff --git a/src/src.pro b/src/src.pro
index f8309c94e..95f1167e3 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -5,7 +5,7 @@
 #                                                                             #
 ###############################################################################
 
-!versionAtLeast(QT_VERSION, 6.6.1):error("Use at least Qt version 6.6.1")
+!versionAtLeast(QT_VERSION, 6.5.3):error("Use at least Qt version 6.5.3")
 
 ###==========================
 ### IMPORT USER CONFIGURATION