3 files changed, 134 insertions, 46 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e70f29636..b17bc9c0f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,7 +17,7 @@ CMAKE_DEPENDENT_OPTION(YUZU_ALLOW_SYSTEM_SDL2 "Try using system SDL2 before fall
 
 option(ENABLE_QT "Enable the Qt frontend" ON)
 option(ENABLE_QT_TRANSLATION "Enable translations for the Qt frontend" OFF)
-CMAKE_DEPENDENT_OPTION(YUZU_USE_BUNDLED_QT "Download bundled Qt binaries" ON "ENABLE_QT;MSVC" OFF)
+CMAKE_DEPENDENT_OPTION(YUZU_USE_BUNDLED_QT "Download bundled Qt binaries" MSVC "ENABLE_QT" OFF)
 
 option(ENABLE_WEB_SERVICE "Enable web services (telemetry, etc.)" ON)
 
@@ -240,6 +240,7 @@ yuzu_find_packages()
 
 # Qt5 requires that we find components, so it doesn't fit our pretty little find package function
 if(ENABLE_QT)
+    set(QT_VERSION 5.12)
     # We want to load the generated conan qt config so that we get the QT_ROOT var so that we can use the official
     # Qt5Config inside the root folder instead of the conan generated one.
     if(EXISTS ${CMAKE_BINARY_DIR}/qtConfig.cmake)
@@ -247,22 +248,40 @@ if(ENABLE_QT)
         list(APPEND CMAKE_MODULE_PATH "${CONAN_QT_ROOT_RELEASE}")
         list(APPEND CMAKE_PREFIX_PATH "${CONAN_QT_ROOT_RELEASE}")
     endif()
+
+    # Check for system Qt on Linux, fallback to bundled Qt
+    if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+        if (NOT YUZU_USE_BUNDLED_QT)
+            find_package(Qt5 ${QT_VERSION} COMPONENTS Widgets QUIET)
+            if (NOT Qt5_FOUND)
+                set(YUZU_USE_BUNDLED_QT ON CACHE BOOL "Download bundled Qt" FORCE)
+            endif()
+        endif()
+        if (YUZU_USE_BUNDLED_QT)
+            # Binary package currently does not support Qt webengine, so make sure it's disabled
+            set(YUZU_USE_QT_WEB_ENGINE OFF CACHE BOOL "Use Qt Webengine" FORCE)
+        endif()
+    endif()
+
     # Workaround for an issue where conan tries to build Qt from scratch instead of download prebuilt binaries
     set(QT_PREFIX_HINT)
+
     if(YUZU_USE_BUNDLED_QT)
         if ((MSVC_VERSION GREATER_EQUAL 1910 AND MSVC_VERSION LESS 1930) AND ARCHITECTURE_x86_64)
-            set(QT_VER qt-5.12.8-msvc2017_64)
+            set(QT_BUILD qt-5.12.8-msvc2017_64)
+        elseif ((${CMAKE_SYSTEM_NAME} STREQUAL "Linux") AND NOT MINGW AND ARCHITECTURE_x86_64)
+            set(QT_BUILD qt5_5_15_2)
         else()
             message(FATAL_ERROR "No bundled Qt binaries for your toolchain. Disable YUZU_USE_BUNDLED_QT and provide your own.")
         endif()
 
-        if (DEFINED QT_VER)
-            download_bundled_external("qt/" ${QT_VER} QT_PREFIX)
+        if (DEFINED QT_BUILD)
+            download_bundled_external("qt/" ${QT_BUILD} QT_PREFIX)
         endif()
 
         set(QT_PREFIX_HINT HINTS "${QT_PREFIX}")
     endif()
-    find_package(Qt5 5.9 COMPONENTS Widgets ${QT_PREFIX_HINT})
+    find_package(Qt5 ${QT_VERSION} REQUIRED COMPONENTS Widgets ${QT_PREFIX_HINT} NO_CMAKE_SYSTEM_PATH)
     if (YUZU_USE_QT_WEB_ENGINE)
         find_package(Qt5 COMPONENTS WebEngineCore WebEngineWidgets)
     endif()
@@ -271,6 +290,7 @@ if(ENABLE_QT)
         find_package(Qt5 REQUIRED COMPONENTS LinguistTools ${QT_PREFIX_HINT})
     endif()
 endif()
+
 # find SDL2 exports a bunch of variables that are needed, so its easier to do this outside of the yuzu_find_package
 if (ENABLE_SDL2)
     if (YUZU_USE_BUNDLED_SDL2)
@@ -379,7 +399,7 @@ if (CONAN_REQUIRED_LIBS)
     if(ENABLE_QT)
         list(APPEND CMAKE_MODULE_PATH "${CONAN_QT_ROOT_RELEASE}")
         list(APPEND CMAKE_PREFIX_PATH "${CONAN_QT_ROOT_RELEASE}")
-        find_package(Qt5 5.9 REQUIRED COMPONENTS Widgets)
+        find_package(Qt5 5.12 REQUIRED COMPONENTS Widgets)
         if (YUZU_USE_QT_WEB_ENGINE)
             find_package(Qt5 REQUIRED COMPONENTS WebEngineCore WebEngineWidgets)
         endif()
diff --git a/CMakeModules/CopyYuzuQt5Deps.cmake b/CMakeModules/CopyYuzuQt5Deps.cmake
index 59343b1ca..4a6aeebbb 100644
--- a/CMakeModules/CopyYuzuQt5Deps.cmake
+++ b/CMakeModules/CopyYuzuQt5Deps.cmake
@@ -1,52 +1,111 @@
 function(copy_yuzu_Qt5_deps target_dir)
     include(WindowsCopyFiles)
-    set(DLL_DEST "${CMAKE_BINARY_DIR}/bin/$<CONFIG>/")
-    set(Qt5_DLL_DIR "${Qt5_DIR}/../../../bin")
+    if (MSVC)
+        set(DLL_DEST "${CMAKE_BINARY_DIR}/bin/$<CONFIG>/")
+        set(Qt5_DLL_DIR "${Qt5_DIR}/../../../bin")
+    else()
+        set(DLL_DEST "${CMAKE_BINARY_DIR}/bin/")
+        set(Qt5_DLL_DIR "${Qt5_DIR}/../../../lib/")
+    endif()
     set(Qt5_PLATFORMS_DIR "${Qt5_DIR}/../../../plugins/platforms/")
+    set(Qt5_PLATFORMTHEMES_DIR "${Qt5_DIR}/../../../plugins/platformthemes/")
+    set(Qt5_PLATFORMINPUTCONTEXTS_DIR "${Qt5_DIR}/../../../plugins/platforminputcontexts/")
+    set(Qt5_XCBGLINTEGRATIONS_DIR "${Qt5_DIR}/../../../plugins/xcbglintegrations/")
     set(Qt5_STYLES_DIR "${Qt5_DIR}/../../../plugins/styles/")
     set(Qt5_IMAGEFORMATS_DIR "${Qt5_DIR}/../../../plugins/imageformats/")
     set(Qt5_RESOURCES_DIR "${Qt5_DIR}/../../../resources/")
     set(PLATFORMS ${DLL_DEST}plugins/platforms/)
     set(STYLES ${DLL_DEST}plugins/styles/)
     set(IMAGEFORMATS ${DLL_DEST}plugins/imageformats/)
-    windows_copy_files(${target_dir} ${Qt5_DLL_DIR} ${DLL_DEST}
-        icudt*.dll
-        icuin*.dll
-        icuuc*.dll
-        Qt5Core$<$<CONFIG:Debug>:d>.*
-        Qt5Gui$<$<CONFIG:Debug>:d>.*
-        Qt5Widgets$<$<CONFIG:Debug>:d>.*
-    )
-
-    if (YUZU_USE_QT_WEB_ENGINE)
-        windows_copy_files(${target_dir} ${Qt5_DLL_DIR} ${DLL_DEST} 
-            Qt5Network$<$<CONFIG:Debug>:d>.*
-            Qt5Positioning$<$<CONFIG:Debug>:d>.*
-            Qt5PrintSupport$<$<CONFIG:Debug>:d>.*
-            Qt5Qml$<$<CONFIG:Debug>:d>.*
-            Qt5Quick$<$<CONFIG:Debug>:d>.*
-            Qt5QuickWidgets$<$<CONFIG:Debug>:d>.*
-            Qt5WebChannel$<$<CONFIG:Debug>:d>.*
-            Qt5WebEngine$<$<CONFIG:Debug>:d>.*
-            Qt5WebEngineCore$<$<CONFIG:Debug>:d>.*
-            Qt5WebEngineWidgets$<$<CONFIG:Debug>:d>.*
-            QtWebEngineProcess$<$<CONFIG:Debug>:d>.*
+    if (MSVC)
+        windows_copy_files(${target_dir} ${Qt5_DLL_DIR} ${DLL_DEST}
+            icudt*.dll
+            icuin*.dll
+            icuuc*.dll
+            Qt5Core$<$<CONFIG:Debug>:d>.*
+            Qt5Gui$<$<CONFIG:Debug>:d>.*
+            Qt5Widgets$<$<CONFIG:Debug>:d>.*
         )
 
-        windows_copy_files(${target_dir} ${Qt5_RESOURCES_DIR} ${DLL_DEST}
-            qtwebengine_resources.pak
-            qtwebengine_devtools_resources.pak
-            qtwebengine_resources_100p.pak
-            qtwebengine_resources_200p.pak
-            icudtl.dat
-        )
-    endif ()
-    windows_copy_files(yuzu ${Qt5_PLATFORMS_DIR} ${PLATFORMS} qwindows$<$<CONFIG:Debug>:d>.*)
-    windows_copy_files(yuzu ${Qt5_STYLES_DIR} ${STYLES} qwindowsvistastyle$<$<CONFIG:Debug>:d>.*)
-    windows_copy_files(yuzu ${Qt5_IMAGEFORMATS_DIR} ${IMAGEFORMATS}
-        qjpeg$<$<CONFIG:Debug>:d>.*
-        qgif$<$<CONFIG:Debug>:d>.*
-        )
+        if (YUZU_USE_QT_WEB_ENGINE)
+            windows_copy_files(${target_dir} ${Qt5_DLL_DIR} ${DLL_DEST}
+                Qt5Network$<$<CONFIG:Debug>:d>.*
+                Qt5Positioning$<$<CONFIG:Debug>:d>.*
+                Qt5PrintSupport$<$<CONFIG:Debug>:d>.*
+                Qt5Qml$<$<CONFIG:Debug>:d>.*
+                Qt5Quick$<$<CONFIG:Debug>:d>.*
+                Qt5QuickWidgets$<$<CONFIG:Debug>:d>.*
+                Qt5WebChannel$<$<CONFIG:Debug>:d>.*
+                Qt5WebEngine$<$<CONFIG:Debug>:d>.*
+                Qt5WebEngineCore$<$<CONFIG:Debug>:d>.*
+                Qt5WebEngineWidgets$<$<CONFIG:Debug>:d>.*
+                QtWebEngineProcess$<$<CONFIG:Debug>:d>.*
+            )
+
+            windows_copy_files(${target_dir} ${Qt5_RESOURCES_DIR} ${DLL_DEST}
+                qtwebengine_resources.pak
+                qtwebengine_devtools_resources.pak
+                qtwebengine_resources_100p.pak
+                qtwebengine_resources_200p.pak
+                icudtl.dat
+            )
+        endif ()
+        windows_copy_files(yuzu ${Qt5_PLATFORMS_DIR} ${PLATFORMS} qwindows$<$<CONFIG:Debug>:d>.*)
+        windows_copy_files(yuzu ${Qt5_STYLES_DIR} ${STYLES} qwindowsvistastyle$<$<CONFIG:Debug>:d>.*)
+        windows_copy_files(yuzu ${Qt5_IMAGEFORMATS_DIR} ${IMAGEFORMATS}
+            qjpeg$<$<CONFIG:Debug>:d>.*
+            qgif$<$<CONFIG:Debug>:d>.*
+            )
+    else()
+        set(Qt5_DLLS
+            "${Qt5_DLL_DIR}libQt5Core.so.5"
+            "${Qt5_DLL_DIR}libQt5DBus.so.5"
+            "${Qt5_DLL_DIR}libQt5Gui.so.5"
+            "${Qt5_DLL_DIR}libQt5Widgets.so.5"
+            "${Qt5_DLL_DIR}libQt5XcbQpa.so.5"
+            "${Qt5_DLL_DIR}libicudata.so.60"
+            "${Qt5_DLL_DIR}libicui18n.so.60"
+            "${Qt5_DLL_DIR}libicuuc.so.60"
+            )
+        set(Qt5_IMAGEFORMAT_DLLS
+            "${Qt5_IMAGEFORMATS_DIR}libqjpeg.so"
+            "${Qt5_IMAGEFORMATS_DIR}libqgif.so"
+            "${Qt5_IMAGEFORMATS_DIR}libqico.so"
+            )
+        set(Qt5_PLATFORMTHEME_DLLS
+            "${Qt5_PLATFORMTHEMES_DIR}libqgtk3.so"
+            "${Qt5_PLATFORMTHEMES_DIR}libqxdgdesktopportal.so"
+            )
+        set(Qt5_PLATFORM_DLLS
+            "${Qt5_PLATFORMS_DIR}libqxcb.so"
+            )
+        set(Qt5_PLATFORMINPUTCONTEXT_DLLS
+            "${Qt5_PLATFORMINPUTCONTEXTS_DIR}libcomposeplatforminputcontextplugin.so"
+            "${Qt5_PLATFORMINPUTCONTEXTS_DIR}libibusplatforminputcontextplugin.so"
+            )
+        set(Qt5_XCBGLINTEGRATION_DLLS
+            "${Qt5_XCBGLINTEGRATIONS_DIR}libqxcb-glx-integration.so"
+            )
+        foreach(LIB ${Qt5_DLLS})
+            file(COPY ${LIB} DESTINATION "${DLL_DEST}/lib" FOLLOW_SYMLINK_CHAIN)
+        endforeach()
+        foreach(LIB ${Qt5_IMAGEFORMAT_DLLS})
+            file(COPY ${LIB} DESTINATION "${DLL_DEST}plugins/imageformats/" FOLLOW_SYMLINK_CHAIN)
+        endforeach()
+        foreach(LIB ${Qt5_PLATFORMTHEME_DLLS})
+            file(COPY ${LIB} DESTINATION "${DLL_DEST}plugins/platformthemes/" FOLLOW_SYMLINK_CHAIN)
+        endforeach()
+        foreach(LIB ${Qt5_PLATFORM_DLLS})
+            file(COPY ${LIB} DESTINATION "${DLL_DEST}plugins/platforms/" FOLLOW_SYMLINK_CHAIN)
+        endforeach()
+        foreach(LIB ${Qt5_PLATFORMINPUTCONTEXT_DLLS})
+            file(COPY ${LIB} DESTINATION "${DLL_DEST}plugins/platforminputcontexts/" FOLLOW_SYMLINK_CHAIN)
+        endforeach()
+        foreach(LIB ${Qt5_XCBGLINTEGRATION_DLLS})
+            file(COPY ${LIB} DESTINATION "${DLL_DEST}plugins/xcbglintegrations/" FOLLOW_SYMLINK_CHAIN)
+        endforeach()
+
+    endif()
     # Create an empty qt.conf file. Qt will detect that this file exists, and use the folder that its in as the root folder.
     # This way it'll look for plugins in the root/plugins/ folder
     add_custom_command(TARGET yuzu POST_BUILD
diff --git a/src/yuzu/CMakeLists.txt b/src/yuzu/CMakeLists.txt
index cc0790e07..634fe66a5 100644
--- a/src/yuzu/CMakeLists.txt
+++ b/src/yuzu/CMakeLists.txt
@@ -4,6 +4,12 @@ set(CMAKE_AUTOUIC ON)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/CMakeModules)
 
+# Set the RPATH for Qt Libraries
+# This must be done before the `yuzu` target is created
+if (YUZU_USE_BUNDLED_QT AND (${CMAKE_SYSTEM_NAME} STREQUAL "Linux"))
+    set(CMAKE_BUILD_RPATH "${CMAKE_BINARY_DIR}/bin/lib/")
+endif()
+
 add_executable(yuzu
     Info.plist
     about_dialog.cpp
@@ -278,11 +284,14 @@ if(UNIX AND NOT APPLE)
     install(TARGETS yuzu RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}/bin")
 endif()
 
-if (MSVC)
+if (YUZU_USE_BUNDLED_QT)
     include(CopyYuzuQt5Deps)
+    copy_yuzu_Qt5_deps(yuzu)
+endif()
+
+if (MSVC)
     include(CopyYuzuSDLDeps)
     include(CopyYuzuFFmpegDeps)
-    copy_yuzu_Qt5_deps(yuzu)
     copy_yuzu_SDL_deps(yuzu)
     copy_yuzu_FFmpeg_deps(yuzu)
 endif()