qt: Add support for building for iOS. (#6594)

CMakeLists.txt

@@ -15,24 +15,35 @@ project(citra LANGUAGES C CXX ASM)
 
 if (APPLE)
     enable_language(OBJC)
+    if (IOS)
+        # Enable searching CMAKE_PREFIX_PATH for bundled dependencies.
+        set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
+        set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
+        set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH)
+    endif()
 endif()
 
 option(ENABLE_LTO "Enable link time optimization" OFF)
 
-option(ENABLE_SDL2 "Enable the SDL2 frontend" ON)
+option(ENABLE_SDL2 "Enable using SDL2" ON)
+CMAKE_DEPENDENT_OPTION(ENABLE_SDL2_FRONTEND "Enable the SDL2 frontend" ON "ENABLE_SDL2;NOT ANDROID AND NOT IOS" OFF)
 option(USE_SYSTEM_SDL2 "Use the system SDL2 lib (instead of the bundled one)" OFF)
 
 # Set bundled qt as dependent options.
 option(ENABLE_QT "Enable the Qt frontend" ON)
 option(ENABLE_QT_TRANSLATION "Enable translations for the Qt frontend" OFF)
+CMAKE_DEPENDENT_OPTION(ENABLE_QT_UPDATER "Enable built-in updater for the Qt frontend" ON "NOT IOS" OFF)
 CMAKE_DEPENDENT_OPTION(CITRA_USE_BUNDLED_QT "Download bundled Qt binaries" ON "ENABLE_QT;MSVC OR APPLE" OFF)
 
+CMAKE_DEPENDENT_OPTION(ENABLE_TESTS "Enable generating tests executable" ON "NOT IOS" OFF)
+CMAKE_DEPENDENT_OPTION(ENABLE_DEDICATED_ROOM "Enable generating dedicated room executable" ON "NOT ANDROID AND NOT IOS" OFF)
+
 option(ENABLE_WEB_SERVICE "Enable web services (telemetry, etc.)" ON)
 if (MSVC)
     set(OPENSSL_DLL_DIR "" CACHE PATH "Location of the Openssl dlls")
 endif()
 
-option(ENABLE_CUBEB "Enables the cubeb audio backend" ON)
+CMAKE_DEPENDENT_OPTION(ENABLE_CUBEB "Enables the cubeb audio backend" ON "NOT IOS" OFF)
 option(ENABLE_OPENAL "Enables the OpenAL audio backend" ON)
 
 CMAKE_DEPENDENT_OPTION(ENABLE_LIBUSB "Enable libusb for GameCube Adapter support" ON "NOT IOS" OFF)
@@ -205,8 +216,7 @@ find_package(Threads REQUIRED)
 
 if (ENABLE_QT)
     if (CITRA_USE_BUNDLED_QT)
-        download_qt_external(6.5.0 QT_PREFIX)
-        list(APPEND CMAKE_PREFIX_PATH ${QT_PREFIX})
+        download_qt_external(6.5.0)
     endif()
 
     find_package(Qt6 REQUIRED COMPONENTS Widgets Multimedia Concurrent)
@@ -290,10 +300,14 @@ if (APPLE)
     find_library(MOLTENVK_LIBRARY MoltenVK REQUIRED)
     message(STATUS "Using MoltenVK at ${MOLTENVK_LIBRARY}.")
 
-    # Umbrella framework for everything GUI-related
-    find_library(COCOA_LIBRARY Cocoa REQUIRED)
+    if (NOT IOS)
+        # Umbrella framework for everything GUI-related
+        find_library(COCOA_LIBRARY Cocoa REQUIRED)
+    endif()
+
     find_library(AVFOUNDATION_LIBRARY AVFoundation REQUIRED)
-    set(PLATFORM_LIBRARIES ${COCOA_LIBRARY} ${AVFOUNDATION_LIBRARY} ${MOLTENVK_LIBRARY})
+    find_library(IOSURFACE_LIBRARY IOSurface REQUIRED)
+    set(PLATFORM_LIBRARIES ${COCOA_LIBRARY} ${AVFOUNDATION_LIBRARY} ${IOSURFACE_LIBRARY} ${MOLTENVK_LIBRARY})
 elseif (WIN32)
     set(PLATFORM_LIBRARIES winmm ws2_32)
     if (MINGW)

CMakeModules/DownloadExternals.cmake

@@ -36,10 +36,11 @@ endfunction()
 # Params:
 #   target: Qt dependency to install. Specify a version number to download Qt, or "tools_(name)" for a specific build tool.
 #   prefix_var: Name of a variable which will be set with the path to the extracted contents.
-function(download_qt_external target prefix_var)
+function(download_qt_external target)
     # Determine installation parameters for OS, architecture, and compiler
     if (WIN32)
         set(host "windows")
+        set(type "desktop")
         if (MINGW)
             set(arch_path "mingw81")
         elseif ((MSVC_VERSION GREATER_EQUAL 1920 AND MSVC_VERSION LESS 1940) AND "x86_64" IN_LIST ARCHITECTURE)
@@ -56,10 +57,19 @@ function(download_qt_external target prefix_var)
         set(arch "win64_${arch_path}")
     elseif (APPLE)
         set(host "mac")
-        set(arch "clang_64")
-        set(arch_path "macos")
+        if (IOS)
+            set(type "ios")
+            set(arch "ios")
+            set(arch_path "ios")
+            set(host_arch_path "macos")
+        else()
+            set(type "desktop")
+            set(arch "clang_64")
+            set(arch_path "macos")
+        endif()
     else()
         set(host "linux")
+        set(type "desktop")
         set(arch "gcc_64")
         set(arch_path "linux")
     endif()
@@ -72,7 +82,11 @@ function(download_qt_external target prefix_var)
         set(install_args install-tool --outputdir ${base_path} ${host} desktop ${target})
     else()
         set(prefix "${base_path}/${target}/${arch_path}")
-        set(install_args install-qt --outputdir ${base_path} ${host} desktop ${target} ${arch} -m qtmultimedia)
+        if (host_arch_path)
+            set(host_flag "--autodesktop")
+            set(host_prefix "${base_path}/${target}/${host_arch_path}")
+        endif()
+        set(install_args install-qt --outputdir ${base_path} ${host} ${type} ${target} ${arch} ${host_flag} -m qtmultimedia)
     endif()
 
     if (NOT EXISTS "${prefix}")
@@ -97,7 +111,15 @@ function(download_qt_external target prefix_var)
     endif()
 
     message(STATUS "Using downloaded Qt binaries at ${prefix}")
-    set(${prefix_var} "${prefix}" PARENT_SCOPE)
+
+    # Add the Qt prefix path so CMake can locate it.
+    list(APPEND CMAKE_PREFIX_PATH "${prefix}")
+    set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} PARENT_SCOPE)
+
+    if (DEFINED host_prefix)
+        message(STATUS "Using downloaded host Qt binaries at ${host_prefix}")
+        set(QT_HOST_PATH "${host_prefix}" CACHE STRING "")
+    endif()
 endfunction()
 
 function(download_moltenvk)

CMakeModules/GenerateBuildInfo.cmake

@@ -0,0 +1,54 @@
+# Gets a UTC timstamp and sets the provided variable to it
+function(get_timestamp _var)
+    string(TIMESTAMP timestamp UTC)
+    set(${_var} "${timestamp}" PARENT_SCOPE)
+endfunction()
+
+list(APPEND CMAKE_MODULE_PATH "${SRC_DIR}/externals/cmake-modules")
+
+# Find the package here with the known path so that the GetGit commands can find it as well
+find_package(Git QUIET PATHS "${GIT_EXECUTABLE}")
+
+# generate git/build information
+include(GetGitRevisionDescription)
+get_git_head_revision(GIT_REF_SPEC GIT_REV)
+string(SUBSTRING "${GIT_REV}" 0 7 GIT_SHORT_REV)
+git_describe(GIT_DESC --always --long --dirty)
+git_branch_name(GIT_BRANCH)
+get_timestamp(BUILD_DATE)
+
+# Generate cpp with Git revision from template
+# Also if this is a CI build, add the build name (ie: Nightly, Canary) to the scm_rev file as well
+set(REPO_NAME "")
+set(BUILD_VERSION "0")
+set(BUILD_FULLNAME "${GIT_SHORT_REV}")
+if (DEFINED ENV{CI})
+    if (DEFINED ENV{GITHUB_ACTIONS})
+        set(BUILD_REPOSITORY $ENV{GITHUB_REPOSITORY})
+        set(BUILD_TAG $ENV{GITHUB_REF_NAME})
+    endif()
+
+    # regex capture the string nightly or canary into CMAKE_MATCH_1
+    string(REGEX MATCH "citra-emu/citra-?(.*)" OUTVAR ${BUILD_REPOSITORY})
+    if ("${CMAKE_MATCH_COUNT}" GREATER 0)
+        # capitalize the first letter of each word in the repo name.
+        string(REPLACE "-" ";" REPO_NAME_LIST ${CMAKE_MATCH_1})
+        foreach(WORD ${REPO_NAME_LIST})
+            string(SUBSTRING ${WORD} 0 1 FIRST_LETTER)
+            string(SUBSTRING ${WORD} 1 -1 REMAINDER)
+            string(TOUPPER ${FIRST_LETTER} FIRST_LETTER)
+            set(REPO_NAME "${REPO_NAME}${FIRST_LETTER}${REMAINDER}")
+        endforeach()
+        string(REGEX MATCH "${CMAKE_MATCH_1}-([0-9]+)" OUTVAR ${BUILD_TAG})
+        if (${CMAKE_MATCH_COUNT} GREATER 0)
+            set(BUILD_VERSION ${CMAKE_MATCH_1})
+        endif()
+        if (BUILD_VERSION)
+            # This leaves a trailing space on the last word, but we actually want that
+            # because of how it's styled in the title bar.
+            set(BUILD_FULLNAME "${REPO_NAME} ${BUILD_VERSION} ")
+        else()
+            set(BUILD_FULLNAME "")
+        endif()
+    endif()
+endif()

CMakeModules/GenerateSCMRev.cmake

@@ -1,55 +1,5 @@
-# Gets a UTC timstamp and sets the provided variable to it
-function(get_timestamp _var)
-    string(TIMESTAMP timestamp UTC)
-    set(${_var} "${timestamp}" PARENT_SCOPE)
-endfunction()
-
-list(APPEND CMAKE_MODULE_PATH "${SRC_DIR}/externals/cmake-modules")
-
-# Find the package here with the known path so that the GetGit commands can find it as well
-find_package(Git QUIET PATHS "${GIT_EXECUTABLE}")
-
-# generate git/build information
-include(GetGitRevisionDescription)
-get_git_head_revision(GIT_REF_SPEC GIT_REV)
-git_describe(GIT_DESC --always --long --dirty)
-git_branch_name(GIT_BRANCH)
-get_timestamp(BUILD_DATE)
-
-# Generate cpp with Git revision from template
-# Also if this is a CI build, add the build name (ie: Nightly, Canary) to the scm_rev file as well
-set(REPO_NAME "")
-set(BUILD_VERSION "0")
-if (DEFINED ENV{CI})
-  if (DEFINED ENV{GITHUB_ACTIONS})
-    set(BUILD_REPOSITORY $ENV{GITHUB_REPOSITORY})
-    set(BUILD_TAG $ENV{GITHUB_REF_NAME})
-  endif()
-
-  # regex capture the string nightly or canary into CMAKE_MATCH_1
-  string(REGEX MATCH "citra-emu/citra-?(.*)" OUTVAR ${BUILD_REPOSITORY})
-  if ("${CMAKE_MATCH_COUNT}" GREATER 0)
-    # capitalize the first letter of each word in the repo name.
-    string(REPLACE "-" ";" REPO_NAME_LIST ${CMAKE_MATCH_1})
-    foreach(WORD ${REPO_NAME_LIST})
-      string(SUBSTRING ${WORD} 0 1 FIRST_LETTER)
-      string(SUBSTRING ${WORD} 1 -1 REMAINDER)
-      string(TOUPPER ${FIRST_LETTER} FIRST_LETTER)
-      set(REPO_NAME "${REPO_NAME}${FIRST_LETTER}${REMAINDER}")
-    endforeach()
-    string(REGEX MATCH "${CMAKE_MATCH_1}-([0-9]+)" OUTVAR ${BUILD_TAG})
-    if (${CMAKE_MATCH_COUNT} GREATER 0)
-      set(BUILD_VERSION ${CMAKE_MATCH_1})
-    endif()
-    if (BUILD_VERSION)
-      # This leaves a trailing space on the last word, but we actually want that
-      # because of how it's styled in the title bar.
-      set(BUILD_FULLNAME "${REPO_NAME} ${BUILD_VERSION} ")
-    else()
-      set(BUILD_FULLNAME "")
-    endif()
-  endif()
-endif()
+list(APPEND CMAKE_MODULE_PATH "${SRC_DIR}/CMakeModules")
+include(GenerateBuildInfo)
 
 # The variable SRC_DIR must be passed into the script (since it uses the current build directory for all values of CMAKE_*_DIR)
 set(VIDEO_CORE "${SRC_DIR}/src/video_core")

dist/apple/Info.plist.in

@@ -2,45 +2,49 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-    <key>CFBundleDevelopmentRegion</key>
-    <string>English</string>
-    <key>CFBundleExecutable</key>
-    <string>${EXECUTABLE_NAME}</string>
-    <key>CFBundleGetInfoString</key>
-    <string></string>
-    <key>CFBundleIconFile</key>
-    <string>citra.icns</string>
-    <key>CFBundleIdentifier</key>
-    <string>com.citra-emu.citra</string>
-    <key>CFBundleInfoDictionaryVersion</key>
-    <string>6.0</string>
-    <key>CFBundleLongVersionString</key>
-    <string></string>
+    <!-- Templated data -->
     <key>CFBundleName</key>
-    <string>Citra</string>
-    <key>CFBundlePackageType</key>
-    <string>APPL</string>
-    <key>CFBundleShortVersionString</key>
-    <string></string>
-    <key>CFBundleSignature</key>
-    <string>????</string>
+    <string>${MACOSX_BUNDLE_BUNDLE_NAME}</string>
+    <key>CFBundleIdentifier</key>
+    <string>${MACOSX_BUNDLE_GUI_IDENTIFIER}</string>
     <key>CFBundleVersion</key>
-    <string></string>
-    <key>CSResourcesFileMapped</key>
-    <true/>
-    <key>LSRequiresCarbon</key>
-    <true/>
+    <string>${MACOSX_BUNDLE_BUNDLE_VERSION}</string>
+    <key>CFBundleShortVersionString</key>
+    <string>${MACOSX_BUNDLE_SHORT_VERSION_STRING}</string>
+    <key>CFBundleLongVersionString</key>
+    <string>${MACOSX_BUNDLE_LONG_VERSION_STRING}</string>
+    <key>CFBundleExecutable</key>
+    <string>${MACOSX_BUNDLE_EXECUTABLE_NAME}</string>
+    <key>CFBundleIconFile</key>
+    <string>${MACOSX_BUNDLE_ICON_FILE}</string>
+    <key>CFBundleGetInfoString</key>
+    <string>${MACOSX_BUNDLE_INFO_STRING}</string>
     <key>NSHumanReadableCopyright</key>
-    <string></string>
-    <key>NSPrincipalClass</key>
-    <string>NSApplication</string>
-    <key>NSHighResolutionCapable</key>
-    <string>True</string>
+    <string>${MACOSX_BUNDLE_COPYRIGHT}</string>
+    <!-- Fixed -->
+    <key>LSApplicationCategoryType</key>
+    <string>public.app-category.games</string>
     <key>NSCameraUsageDescription</key>
     <string>This app requires camera access to emulate the 3DS&apos;s cameras.</string>
     <key>NSMicrophoneUsageDescription</key>
     <string>This app requires microphone access to emulate the 3DS&apos;s microphone.</string>
-    <key>LSApplicationCategoryType</key>
-    <string>public.app-category.games</string>
+    <key>CFBundleInfoDictionaryVersion</key>
+    <string>6.0</string>
+    <key>CFBundlePackageType</key>
+    <string>APPL</string>
+    <key>CFBundleDevelopmentRegion</key>
+    <string>English</string>
+    <key>CFBundleSignature</key>
+    <string>????</string>
+    <key>CSResourcesFileMapped</key>
+    <true/>
+    <key>LSSupportsOpeningDocumentsInPlace</key>
+    <true/>
+    <key>NSHighResolutionCapable</key>
+    <string>True</string>
+    <key>UIFileSharingEnabled</key>
+    <true/>
+    <key>UILaunchStoryboardName</key>
+    <string>LaunchScreen</string>
 </dict>
 </plist>

dist/apple/LaunchScreen.storyboard

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="21701" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" initialViewController="Y6W-OH-hqX">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="21679"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="s0d-6b-0kx">
+            <objects>
+                <viewController id="Y6W-OH-hqX" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="5EZ-qb-Rvc">
+                        <rect key="frame" x="0.0" y="0.0" width="393" height="852"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="launch_logo.png" translatesAutoresizingMaskIntoConstraints="NO" id="yrZ-hu-Uge">
+                                <rect key="frame" x="-59.666666666666657" y="306" width="512.33333333333337" height="240"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="240" id="VhL-hA-Bwr"/>
+                                </constraints>
+                            </imageView>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="vDu-zF-Fre"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                        <constraints>
+                            <constraint firstItem="yrZ-hu-Uge" firstAttribute="centerX" secondItem="5EZ-qb-Rvc" secondAttribute="centerX" id="1y3-Mx-a65"/>
+                            <constraint firstItem="yrZ-hu-Uge" firstAttribute="centerY" secondItem="5EZ-qb-Rvc" secondAttribute="centerY" id="vNO-xV-EPD"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Ief-a0-LHa" userLabel="First Responder" customClass="UIResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="219" y="18"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="launch_logo.png" width="512" height="512"/>
+        <systemColor name="systemBackgroundColor">
+            <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+        </systemColor>
+    </resources>
+</document>

externals/CMakeLists.txt

@@ -148,6 +148,7 @@ target_include_directories(enet INTERFACE ./enet/include)
 # Cubeb
 if (ENABLE_CUBEB)
     set(BUILD_TESTS OFF CACHE BOOL "")
+    set(BUILD_TOOLS OFF CACHE BOOL "")
     add_subdirectory(cubeb EXCLUDE_FROM_ALL)
 endif()
 

externals/libressl

@@ -1 +1 @@
-Subproject commit 8929f818fd748fd31a34fec7c04558399e13014a
+Subproject commit dcf9a84aba598f827f65d946d31c3c93af62790a

src/CMakeLists.txt

@@ -143,9 +143,12 @@ add_subdirectory(video_core)
 add_subdirectory(audio_core)
 add_subdirectory(network)
 add_subdirectory(input_common)
-add_subdirectory(tests)
 
-if (ENABLE_SDL2)
+if (ENABLE_TESTS)
+    add_subdirectory(tests)
+endif()
+
+if (ENABLE_SDL2 AND ENABLE_SDL2_FRONTEND)
     add_subdirectory(citra)
 endif()
 
@@ -153,11 +156,13 @@ if (ENABLE_QT)
     add_subdirectory(citra_qt)
 endif()
 
+if (ENABLE_DEDICATED_ROOM)
+    add_subdirectory(dedicated_room)
+endif()
+
 if (ANDROID)
     add_subdirectory(android/app/src/main/jni)
     target_include_directories(citra-android PRIVATE android/app/src/main)
-else()
-    add_subdirectory(dedicated_room)
 endif()
 
 if (ENABLE_WEB_SERVICE)

src/citra_qt/CMakeLists.txt

@@ -8,7 +8,6 @@ if (POLICY CMP0071)
 endif()
 
 add_executable(citra-qt
-    Info.plist
     aboutdialog.cpp
     aboutdialog.h
     aboutdialog.ui
@@ -169,9 +168,6 @@ add_executable(citra-qt
     uisettings.h
     qt_image_interface.cpp
     qt_image_interface.h
-    updater/updater.cpp
-    updater/updater.h
-    updater/updater_p.h
     util/clickable_label.cpp
     util/clickable_label.h
     util/sequence_dialog/sequence_dialog.cpp
@@ -202,6 +198,15 @@ file(GLOB COMPAT_LIST
 file(GLOB_RECURSE ICONS ${PROJECT_SOURCE_DIR}/dist/icons/*)
 file(GLOB_RECURSE THEMES ${PROJECT_SOURCE_DIR}/dist/qt_themes/*)
 
+if (ENABLE_QT_UPDATER)
+    target_sources(citra-qt PRIVATE
+        updater/updater.cpp
+        updater/updater.h
+        updater/updater_p.h
+    )
+    target_compile_definitions(citra-qt PUBLIC ENABLE_QT_UPDATER)
+endif()
+
 if (ENABLE_QT_TRANSLATION)
     set(CITRA_QT_LANGUAGES "${PROJECT_SOURCE_DIR}/dist/languages" CACHE PATH "Path to the translation bundle for the Qt frontend")
     option(GENERATE_QT_TRANSLATION "Generate en.ts as the translation source file" OFF)
@@ -248,17 +253,43 @@ target_sources(citra-qt
 )
 
 if (APPLE)
-    set(MACOSX_ICON "../../dist/citra.icns")
-    set_source_files_properties(${MACOSX_ICON} PROPERTIES MACOSX_PACKAGE_LOCATION Resources)
+    set(DIST_DIR "../../dist/apple")
+    set(APPLE_RESOURCES
+        "${DIST_DIR}/citra.icns"
+        "${DIST_DIR}/LaunchScreen.storyboard"
+        "${DIST_DIR}/launch_logo.png"
+    )
+
     target_sources(citra-qt PRIVATE
-        ${MACOSX_ICON}
+        ${APPLE_RESOURCES}
         macos_authorization.h
         macos_authorization.mm
     )
+
+    # Define app bundle metadata.
+    include(GenerateBuildInfo)
     set_target_properties(citra-qt PROPERTIES
         MACOSX_BUNDLE TRUE
-        MACOSX_BUNDLE_INFO_PLIST ${CMAKE_CURRENT_SOURCE_DIR}/Info.plist
+        MACOSX_BUNDLE_INFO_PLIST "${DIST_DIR}/Info.plist.in"
+        MACOSX_BUNDLE_BUNDLE_NAME "Citra"
+        MACOSX_BUNDLE_GUI_IDENTIFIER "com.citra-emu.citra"
+        MACOSX_BUNDLE_BUNDLE_VERSION "${BUILD_VERSION}"
+        MACOSX_BUNDLE_SHORT_VERSION_STRING "${BUILD_FULLNAME}"
+        MACOSX_BUNDLE_LONG_VERSION_STRING "${BUILD_FULLNAME}"
+        MACOSX_BUNDLE_ICON_FILE "citra.icns"
+        RESOURCE "${APPLE_RESOURCES}"
     )
+
+    if (IOS)
+        set_target_properties(citra-qt PROPERTIES
+            # Have Xcode copy and sign MoltenVK into app bundle.
+            XCODE_EMBED_FRAMEWORKS "${MOLTENVK_LIBRARY}"
+            XCODE_EMBED_FRAMEWORKS_CODE_SIGN_ON_COPY YES
+            XCODE_ATTRIBUTE_LD_RUNPATH_SEARCH_PATHS "@executable_path/Frameworks"
+            # Support iPhone and iPad.
+            XCODE_ATTRIBUTE_TARGETED_DEVICE_FAMILY "1,2"
+        )
+    endif()
 elseif(WIN32)
     # compile as a win32 gui application instead of a console application
     target_link_libraries(citra-qt PRIVATE Qt6::EntryPointImplementation)

src/citra_qt/bootmanager.cpp

@@ -364,7 +364,7 @@ static Frontend::WindowSystemType GetWindowSystemType() {
         return Frontend::WindowSystemType::X11;
     else if (platform_name == QStringLiteral("wayland"))
         return Frontend::WindowSystemType::Wayland;
-    else if (platform_name == QStringLiteral("cocoa"))
+    else if (platform_name == QStringLiteral("cocoa") || platform_name == QStringLiteral("ios"))
         return Frontend::WindowSystemType::MacOS;
 
     LOG_CRITICAL(Frontend, "Unknown Qt platform!");

src/citra_qt/main.cpp

@@ -223,7 +223,12 @@ GMainWindow::GMainWindow(Core::System& system_)
     InitializeRecentFileMenuActions();
     InitializeSaveStateMenuActions();
     InitializeHotkeys();
+#if ENABLE_QT_UPDATER
     ShowUpdaterWidgets();
+#else
+    ui->action_Check_For_Updates->setVisible(false);
+    ui->action_Open_Maintenance_Tool->setVisible(false);
+#endif
 
     SetDefaultUIGeometry();
     RestoreUIState();
@@ -268,9 +273,11 @@ GMainWindow::GMainWindow(Core::System& system_)
     connect(&mouse_hide_timer, &QTimer::timeout, this, &GMainWindow::HideMouseCursor);
     connect(ui->menubar, &QMenuBar::hovered, this, &GMainWindow::OnMouseActivity);
 
+#if ENABLE_QT_UPDATER
     if (UISettings::values.check_for_update_on_start) {
         CheckForUpdates();
     }
+#endif
 
     QStringList args = QApplication::arguments();
     if (args.length() >= 2) {
@@ -322,9 +329,11 @@ void GMainWindow::InitializeWidgets() {
                                              ui->action_Show_Room);
     multiplayer_state->setVisible(false);
 
+#if ENABLE_QT_UPDATER
     // Setup updater
     updater = new Updater(this);
     UISettings::values.updater_found = updater->HasUpdater();
+#endif
 
     UpdateBootHomeMenuState();
 
@@ -655,13 +664,6 @@ void GMainWindow::InitializeHotkeys() {
     });
 }
 
-void GMainWindow::ShowUpdaterWidgets() {
-    ui->action_Check_For_Updates->setVisible(UISettings::values.updater_found);
-    ui->action_Open_Maintenance_Tool->setVisible(UISettings::values.updater_found);
-
-    connect(updater, &Updater::CheckUpdatesDone, this, &GMainWindow::OnUpdateFound);
-}
-
 void GMainWindow::SetDefaultUIGeometry() {
     // geometry: 55% of the window contents are in the upper screen half, 45% in the lower half
     const QRect screenRect = screen()->geometry();
@@ -851,8 +853,11 @@ void GMainWindow::ConnectMenuEvents() {
         QDesktopServices::openUrl(QUrl(QStringLiteral("https://citra-emu.org/wiki/faq/")));
     });
     connect_menu(ui->action_About, &GMainWindow::OnMenuAboutCitra);
+
+#if ENABLE_QT_UPDATER
     connect_menu(ui->action_Check_For_Updates, &GMainWindow::OnCheckForUpdates);
     connect_menu(ui->action_Open_Maintenance_Tool, &GMainWindow::OnOpenUpdater);
+#endif
 }
 
 void GMainWindow::UpdateMenuState() {
@@ -904,6 +909,7 @@ void GMainWindow::OnDisplayTitleBars(bool show) {
     }
 }
 
+#if ENABLE_QT_UPDATER
 void GMainWindow::OnCheckForUpdates() {
     explicit_update_check = true;
     CheckForUpdates();
@@ -970,6 +976,14 @@ void GMainWindow::OnOpenUpdater() {
     updater->LaunchUI();
 }
 
+void GMainWindow::ShowUpdaterWidgets() {
+    ui->action_Check_For_Updates->setVisible(UISettings::values.updater_found);
+    ui->action_Open_Maintenance_Tool->setVisible(UISettings::values.updater_found);
+
+    connect(updater, &Updater::CheckUpdatesDone, this, &GMainWindow::OnUpdateFound);
+}
+#endif
+
 #if defined(__unix__) && !defined(__APPLE__)
 static std::optional<QDBusObjectPath> HoldWakeLockLinux(u32 window_id = 0) {
     if (!QDBusConnection::sessionBus().isConnected()) {
@@ -1327,9 +1341,11 @@ void GMainWindow::ShutdownGame() {
 
     emulation_running = false;
 
+#if ENABLE_QT_UDPATER
     if (defer_update_prompt) {
         ShowUpdatePrompt();
     }
+#endif
 
     game_title.clear();
     UpdateWindowTitle();

src/citra_qt/main.h

@@ -46,7 +46,9 @@ class QProgressBar;
 class QPushButton;
 class QSlider;
 class RegistersWidget;
+#if ENABLE_QT_UPDATER
 class Updater;
+#endif
 class WaitTreeWidget;
 
 namespace Camera {
@@ -146,12 +148,15 @@ private:
     void ShutdownGame();
 
     void ShowTelemetryCallout();
+    void SetDiscordEnabled(bool state);
+    void LoadAmiibo(const QString& filename);
+
+#if ENABLE_QT_UPDATER
     void ShowUpdaterWidgets();
     void ShowUpdatePrompt();
     void ShowNoUpdatePrompt();
     void CheckForUpdates();
-    void SetDiscordEnabled(bool state);
-    void LoadAmiibo(const QString& filename);
+#endif
 
     /**
      * Stores the filename in the recently loaded files list.
@@ -244,9 +249,13 @@ private slots:
     void OnCoreError(Core::System::ResultStatus, std::string);
     /// Called whenever a user selects Help->About Citra
     void OnMenuAboutCitra();
+
+#if ENABLE_QT_UPDATER
     void OnUpdateFound(bool found, bool error);
     void OnCheckForUpdates();
     void OnOpenUpdater();
+#endif
+
     void OnLanguageChanged(const QString& locale);
     void OnMouseActivity();
 
@@ -326,7 +335,9 @@ private:
     IPCRecorderWidget* ipcRecorderWidget;
     LLEServiceModulesWidget* lleServiceModulesWidget;
     WaitTreeWidget* waitTreeWidget;
+#if ENABLE_QT_UPDATER
     Updater* updater;
+#endif
 
     bool explicit_update_check = false;
     bool defer_update_prompt = false;

src/common/common_paths.h

@@ -21,7 +21,12 @@
 #ifdef _WIN32
 #define EMU_DATA_DIR "Citra"
 #elif defined(__APPLE__)
-#define MACOS_EMU_DATA_DIR "Library" DIR_SEP "Application Support" DIR_SEP "Citra"
+#include <TargetConditionals.h>
+#if TARGET_OS_IPHONE
+#define APPLE_EMU_DATA_DIR "Documents" DIR_SEP "Citra"
+#else
+#define APPLE_EMU_DATA_DIR "Library" DIR_SEP "Application Support" DIR_SEP "Citra"
+#endif
 // For compatibility with XDG paths.
 #define EMU_DATA_DIR "citra-emu"
 #else

src/common/file_util.cpp

@@ -786,7 +786,7 @@ void SetUserPath(const std::string& path) {
             // paths.
             if (!FileUtil::Exists(data_dir) && !FileUtil::Exists(config_dir) &&
                 !FileUtil::Exists(cache_dir)) {
-                data_dir = GetHomeDirectory() + DIR_SEP MACOS_EMU_DATA_DIR DIR_SEP;
+                data_dir = GetHomeDirectory() + DIR_SEP APPLE_EMU_DATA_DIR DIR_SEP;
                 config_dir = data_dir + CONFIG_DIR DIR_SEP;
                 cache_dir = data_dir + CACHE_DIR DIR_SEP;
             }