fix: make updater functionality conditional with CITRON_USE_AUTO_UPDATER option

- Add CITRON_USE_AUTO_UPDATER CMake option (default: OFF)
- Move updater source files to conditional target_sources block
- Add _WIN32 definition for proper moc processing on Windows
- Fixes C2664 compilation error with UpdaterDialog::OnUpdateCompleted

Signed-off-by: Zephyron <zephyron@citron-emu.org>

CMakeLists.txt

@@ -43,6 +43,8 @@ option(CITRON_USE_QT_MULTIMEDIA "Use QtMultimedia for Camera" OFF)
 
 option(CITRON_USE_QT_WEB_ENGINE "Use QtWebEngine for web applet implementation" OFF)
 
+option(CITRON_USE_AUTO_UPDATER "Enable automatic updater functionality" OFF)
+
 option(ENABLE_CUBEB "Enables the cubeb audio backend" ON)
 
 option(ENABLE_OPENAL "Enables the OpenAL audio backend" ON)

src/citron/CMakeLists.txt

@@ -210,11 +210,6 @@ add_executable(citron
     startup_checks.h
     uisettings.cpp
     uisettings.h
-    updater/updater_service.cpp
-    updater/updater_service.h
-    updater/updater_dialog.cpp
-    updater/updater_dialog.h
-    updater/updater_dialog.ui
     util/clickable_label.cpp
     util/clickable_label.h
     util/controller_navigation.cpp
@@ -252,6 +247,21 @@ if (CITRON_CRASH_DUMPS)
     target_compile_definitions(citron PRIVATE CITRON_CRASH_DUMPS)
 endif()
 
+if (CITRON_USE_AUTO_UPDATER)
+    target_sources(citron PRIVATE
+        updater/updater_service.cpp
+        updater/updater_service.h
+        updater/updater_dialog.cpp
+        updater/updater_dialog.h
+        updater/updater_dialog.ui
+    )
+
+    target_compile_definitions(citron PRIVATE
+        # Ensure _WIN32 is defined for moc processing on Windows
+        $<$<BOOL:${WIN32}>:_WIN32>
+    )
+endif()
+
 if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
     target_compile_definitions(citron PRIVATE
         $<$<VERSION_LESS:$<CXX_COMPILER_VERSION>,15>:CANNOT_EXPLICITLY_INSTANTIATE>