Use QT_DEPRECATED_WARNINGS_SINCE

Telegram/SourceFiles/core/launcher.cpp

@@ -324,7 +324,10 @@ void Launcher::initHighDpi() {
 	qputenv("QT_DPI_ADJUSTMENT_POLICY", "AdjustDpi");
 #endif // Qt < 6.2.0
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	QApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);
+#endif // Qt < 6.0.0
+
 	if (OptionFractionalScalingEnabled.value()) {
 		QApplication::setHighDpiScaleFactorRoundingPolicy(
 			Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);

Telegram/SourceFiles/platform/mac/launcher_mac.h

@@ -17,7 +17,6 @@ public:
 
 private:
 	void initHook() override;
-	void initHighDpi() override;
 
 	bool launchUpdater(UpdaterLaunch action) override;
 

Telegram/SourceFiles/platform/mac/launcher_mac.mm

@@ -27,11 +27,6 @@ void Launcher::initHook() {
 	base::RegisterBundledResources(u"Telegram.rcc"_q);
 }
 
-void Launcher::initHighDpi() {
-	// macOS Retina display support is working fine.
-	QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);
-}
-
 bool Launcher::launchUpdater(UpdaterLaunch action) {
 	if (cExeName().isEmpty()) {
 		return false;

Telegram/cmake/lib_tgcalls.cmake

@@ -241,13 +241,12 @@ elseif (APPLE)
     )
 endif()
 
-if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    target_compile_options(lib_tgcalls
-    PRIVATE
-        -Wno-deprecated-volatile
-        -Wno-ambiguous-reversed-operator
-    )
-endif()
+target_compile_options_if_exists(lib_tgcalls
+PRIVATE
+    -Wno-deprecated-volatile
+    -Wno-ambiguous-reversed-operator
+    -Wno-deprecated-declarations
+)
 
 remove_target_sources(lib_tgcalls ${tgcalls_loc}
     platform/android/AndroidContext.cpp