qt: Migrate to Qt6. (#6418)

.ci/linux-appimage/docker.sh

@@ -17,12 +17,5 @@ rm -rf ./AppDir/usr/local
 #Circumvent missing LibFuse in Docker, by extracting the AppImage
 export APPIMAGE_EXTRACT_AND_RUN=1
 
-#Copy External Libraries
-mkdir -p ./AppDir/usr/plugins/platformthemes
-mkdir -p ./AppDir/usr/plugins/styles
-cp /usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/libqt5ct.so ./AppDir/usr/plugins/platformthemes
-cp /usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/libqgtk3.so ./AppDir/usr/plugins/platformthemes
-cp /usr/lib/x86_64-linux-gnu/qt5/plugins/styles/libqt5ct-style.so ./AppDir/usr/plugins/styles
-
 #Build AppImage
-/linuxdeploy-x86_64.AppImage --appdir AppDir --plugin qt --output appimage
+QMAKE=/usr/lib/qt6/bin/qmake DEPLOY_PLATFORM_THEMES=1 /linuxdeploy-x86_64.AppImage --appdir AppDir --plugin qt --output appimage

.ci/linux-mingw/docker.sh

@@ -17,15 +17,14 @@ echo 'Prepare binaries...'
 cd ..
 mkdir package
 
-QT_PLATFORM_DLL_PATH='/usr/x86_64-w64-mingw32/lib/qt/plugins/platforms/'
+QT_PLATFORM_DLL_PATH='/usr/x86_64-w64-mingw32/lib/qt6/plugins/platforms/'
 find build/ -name "citra*.exe" -exec cp {} 'package' \;
 
 # copy Qt plugins
 mkdir package/platforms
 cp "${QT_PLATFORM_DLL_PATH}/qwindows.dll" package/platforms/
-cp -rv "${QT_PLATFORM_DLL_PATH}/../mediaservice/" package/
+cp -rv "${QT_PLATFORM_DLL_PATH}/../multimedia/" package/
 cp -rv "${QT_PLATFORM_DLL_PATH}/../imageformats/" package/
 cp -rv "${QT_PLATFORM_DLL_PATH}/../styles/" package/
-rm -f package/mediaservice/*d.dll
 
 python3 .ci/linux-mingw/scan_dll.py package/*.exe package/imageformats/*.dll "package/"

.ci/macos/deps.sh

@@ -1,13 +1,3 @@
 #!/bin/sh -ex
 
 brew install ccache ninja || true
-
-export QT_VER=5.15.8
-
-mkdir tmp
-cd tmp/
-
-# install Qt
-wget https://github.com/citra-emu/ext-macos-bin/raw/main/qt/qt-${QT_VER}.7z
-7z x qt-${QT_VER}.7z
-sudo cp -rv $(pwd)/qt-${QT_VER}/* /usr/local/

.ci/windows-msvc/build.sh

@@ -6,7 +6,7 @@ cmake .. \
     -G Ninja \
     -DCMAKE_TOOLCHAIN_FILE="$(pwd)/../CMakeModules/MSVCCache.cmake" \
     -DCITRA_USE_CCACHE=ON \
-    -DENABLE_QT_TRANSLATION=OFF \
+    -DENABLE_QT_TRANSLATION=ON \
     -DCITRA_ENABLE_COMPATIBILITY_REPORTING=${ENABLE_COMPATIBILITY_REPORTING:-"OFF"} \
     -DENABLE_COMPATIBILITY_LIST_DOWNLOAD=ON \
     -DUSE_DISCORD_PRESENCE=ON \