diff --git a/3rdparty/ext_qt/CMakeLists.txt b/3rdparty/ext_qt/CMakeLists.txt index 6f0338d7c8..2c1aef418e 100644 --- a/3rdparty/ext_qt/CMakeLists.txt +++ b/3rdparty/ext_qt/CMakeLists.txt @@ -1,300 +1,301 @@ SET(EXTPREFIX_qt "${EXTPREFIX}") if (WIN32) list(APPEND _QT_conf -skip qt3d -skip qtactiveqt -skip qtcanvas3d -skip qtconnectivity -skip qtdoc -skip qtgraphicaleffects -skip qtlocation -skip qtsensors -skip qtserialport -skip qtwayland -skip qtwebchannel -skip qtwebengine -skip qtwebsockets -skip qtwebview -skip qtxmlpatterns -no-sql-sqlite -nomake examples -nomake tools -no-compile-examples -no-dbus -no-iconv -no-qml-debug -no-libproxy -no-system-proxies -no-icu -no-mtdev -skip qtcharts -skip qtdatavis3d -skip qtgamepad -skip qtnetworkauth -skip qtpurchasing -skip qtremoteobjects -skip qtscxml -skip qtserialbus -skip qtspeech -skip qtvirtualkeyboard # -qt-zlib -qt-pcre -qt-libpng -qt-libjpeg -openssl-linked -I ${EXTPREFIX_qt}/include -L ${EXTPREFIX_qt}/lib # -opensource -confirm-license # -release -platform win32-g++ -prefix ${EXTPREFIX_qt} QMAKE_LFLAGS_APP+=${SECURITY_EXE_LINKER_FLAGS} QMAKE_LFLAGS_SHLIB+=${SECURITY_SHARED_LINKER_FLAGS} QMAKE_LFLAGS_SONAME+=${SECURITY_SHARED_LINKER_FLAGS} ) if (QT_ENABLE_DEBUG_INFO) # Set the option to build Qt with debugging info enabled list(APPEND _QT_conf -force-debug-info) endif(QT_ENABLE_DEBUG_INFO) if (QT_ENABLE_DYNAMIC_OPENGL) list(APPEND _QT_conf -opengl dynamic -angle) else (QT_ENABLE_DYNAMIC_OPENGL) list(APPEND _QT_conf -opengl desktop -no-angle) endif (QT_ENABLE_DYNAMIC_OPENGL) # MIME-type optimization patches set(ext_qt_PATCH_COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0001-Use-fast-path-for-unsupported-mime-types.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0002-Hack-always-return-we-support-DIBV5.patch ) # Tablet support patches if (NOT USE_QT_TABLET_WINDOWS) set(ext_qt_PATCH_COMMAND ${ext_qt_PATCH_COMMAND} COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0001-disable-wintab.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/disable-winink.patch ) else() set(ext_qt_PATCH_COMMAND ${ext_qt_PATCH_COMMAND} COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0020-Synthesize-Enter-LeaveEvent-for-accepted-QTabletEven.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0023-Implement-a-switch-for-tablet-API-on-Windows.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0024-Fetch-stylus-button-remapping-from-WinTab-driver.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0025-Disable-tablet-relative-mode-in-Qt.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0026-Fetch-mapped-screen-size-from-the-Wintab-driver.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0027-Switch-stylus-pointer-type-when-the-tablet-is-in-the.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0028-Fix-updating-tablet-pressure-resolution-on-every-pro.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0051-Add-workaround-for-handling-table-press-correctly-in.patch ) endif() # HDR patches set(ext_qt_PATCH_COMMAND ${ext_qt_PATCH_COMMAND} COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0003-Implement-openGL-surface-color-space-selection-in-An.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0004-Implement-color-space-selection-for-QSurfaceFormat.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0005-Implement-color-conversion-for-the-backing-store-tex.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0006-Return-QScreen-s-HMONITOR-handle-via-QPlatformNative.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0007-Implement-a-manual-test-for-checking-is-HDR-features.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0008-Fix-notification-of-QDockWidget-when-it-gets-undocke.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0009-Fix-Rec2020-display-format.patch ) # Other patches set(ext_qt_PATCH_COMMAND ${ext_qt_PATCH_COMMAND} COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0060-Windows-Add-a-default-setting-for-hasBorderInFullScr.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0061-Hack-to-hide-1px-border-with-OpenGL-fullscreen-hack.patch COMMAND ${PATCH_COMMAND} -p1 -d qttools -i ${CMAKE_CURRENT_SOURCE_DIR}/windeployqt-force-allow-debug-info.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0080-Sync-buffers-of-the-destination-file-after-QFile-cop.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0081-Fix-no-warning-for-overwriting-files-in-non-native-d.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0082-Make-jp-e-g-default-extensions-context-aware.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0100-Fix-qt5_make_output_file-macro-for-paths-containing-.patch # COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0031-Compute-logical-DPI-on-a-per-screen-basis.patch # COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0032-Update-Dpi-and-scale-factor-computation.patch # COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0033-Move-QT_FONT_DPI-to-cross-platform-code.patch # COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0034-Update-QT_SCREEN_SCALE_FACTORS.patch # COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0035-Deprecate-QT_AUTO_SCREEN_SCALE_FACTOR.patch # COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0036-Add-high-DPI-scale-factor-rounding-policy-C-API.patch ) ExternalProject_Add( ext_qt DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR} URL https://download.qt.io/official_releases/qt/5.12/5.12.7/single/qt-everywhere-src-5.12.7.zip URL_MD5 753e0147d5e32d61c30d6a1b498bed3e PATCH_COMMAND ${ext_qt_PATCH_COMMAND} INSTALL_DIR ${EXTPREFIX_qt} CONFIGURE_COMMAND /configure.bat ${_QT_conf} BUILD_COMMAND mingw32-make -j${SUBMAKE_JOBS} INSTALL_COMMAND mingw32-make -j${SUBMAKE_JOBS} install UPDATE_COMMAND "" # Use a short name to reduce the chance of exceeding path length limit SOURCE_DIR s BINARY_DIR b DEPENDS ext_patch ext_openssl ) elseif (ANDROID) ExternalProject_Add( ext_qt DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR} URL https://download.qt.io/archive/qt/5.12/5.12.7/single/qt-everywhere-src-5.12.7.tar.xz URL_MD5 ce2c5661c028b9de6183245982d7c120 PATCH_COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0091-Add-support-for-pen-tilt-rotation-for-Android.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0092-Bugfix-fix-the-offset-bug-when-using-Stylus-with-And.patch + COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/fix-locale-android.patch CONFIGURE_COMMAND /configure -prefix ${EXTPREFIX_qt} -opensource -confirm-license -verbose -nomake examples -nomake tests -nomake tools -skip qt3d -skip qtactiveqt -skip qtcanvas3d -skip qtconnectivity -skip qtgraphicaleffects -skip qtlocation -skip qtwayland -skip qtwebchannel -skip qtwebengine -skip qtwebsockets -skip qtwebview -skip qtserialport -skip qtdatavis3d -skip qtvirtualkeyboard -skip qtspeech -skip qtsensors -skip qtgamepad -skip qtscxml -skip qtremoteobjects -skip qtxmlpatterns -skip qtnetworkauth -skip qtcharts -skip qtdatavis3d -skip qtgamepad -skip qtpurchasing -skip qtscxml -skip qtserialbus -skip qtspeech -skip qtvirtualkeyboard -skip qtmultimedia -android-sdk ${ANDROID_SDK_ROOT} -android-ndk ${CMAKE_ANDROID_NDK} -android-arch ${ANDROID_ABI} -xplatform android-clang -android-ndk-platform android-21 -make libs INSTALL_DIR ${EXTPREFIX_qt} BUILD_COMMAND $(MAKE) INSTALL_COMMAND $(MAKE) install UPDATE_COMMAND "" BUILD_IN_SOURCE 1 ) elseif (NOT APPLE) ExternalProject_Add( ext_qt DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR} URL https://download.qt.io/official_releases/qt/5.12/5.12.7/single/qt-everywhere-src-5.12.7.tar.xz URL_MD5 ce2c5661c028b9de6183245982d7c120 PATCH_COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0012-Synthesize-Enter-LeaveEvent-for-accepted-QTabletEven.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0013-Poison-Qt-s-headers-with-a-mark-about-presence-of-En.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0081-Fix-no-warning-for-overwriting-files-in-non-native-d.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0082-Make-jp-e-g-default-extensions-context-aware.patch CMAKE_ARGS -DOPENSSL_LIBS='-L${EXTPREFIX_qt}/lib -lssl -lcrypto' CONFIGURE_COMMAND /configure -prefix ${EXTPREFIX_qt} -opensource -confirm-license -openssl-linked -verbose -nomake examples -skip qt3d -skip qtactiveqt -skip qtcanvas3d -skip qtconnectivity -skip qtgraphicaleffects -skip qtlocation -skip qtwayland -skip qtwebchannel -skip qtwebengine -skip qtwebsockets -skip qtwebview -skip qtandroidextras -skip qtserialport -skip qtdatavis3d -skip qtvirtualkeyboard -skip qtspeech -skip qtsensors -skip qtgamepad -skip qtscxml -skip qtremoteobjects -skip qtxmlpatterns -skip qtnetworkauth -skip qtcharts -skip qtdatavis3d -skip qtgamepad -skip qtpurchasing -skip qtscxml -skip qtserialbus -skip qtspeech -skip qtvirtualkeyboard -skip qtmultimedia INSTALL_DIR ${EXTPREFIX_qt} BUILD_COMMAND $(MAKE) INSTALL_COMMAND $(MAKE) install UPDATE_COMMAND "" BUILD_IN_SOURCE 1 ) else( APPLE ) # XCODE_VERSION is set by CMake when using the Xcode generator, otherwise we need # to detect it manually here. if (NOT XCODE_VERSION) execute_process( COMMAND xcodebuild -version OUTPUT_VARIABLE xcodebuild_version OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_FILE /dev/null ) string(REGEX MATCH "Xcode ([0-9]+([.][0-9]+)*)" version_match ${xcodebuild_version}) if (version_match) message(STATUS "${EXTPREFIX_qt}:Identified Xcode Version: ${CMAKE_MATCH_1}") set(XCODE_VERSION ${CMAKE_MATCH_1}) else() # If detecting Xcode version failed, set a crazy high version so we default # to the newest. set(XCODE_VERSION 99) message(WARNING "${EXTPREFIX_qt}:Failed to detect the version of an installed copy of Xcode, falling back to highest supported version. Set XCODE_VERSION to override.") endif(version_match) endif(NOT XCODE_VERSION) # ------------------------------------------------------------------------------- # Verify the Xcode installation on Mac OS like Qt5.7 does/will # If not stop now, the system isn't configured correctly for Qt. # No reason to even proceed. # ------------------------------------------------------------------------------- set(XCSELECT_OUTPUT) find_program(XCSELECT_PROGRAM "xcode-select") if(XCSELECT_PROGRAM) message(STATUS "${EXTPREFIX_qt}:Found XCSELECT_PROGRAM as ${XCSELECT_PROGRAM}") set(XCSELECT_COMMAND ${XCSELECT_PROGRAM} "--print-path") execute_process( COMMAND ${XCSELECT_COMMAND} RESULT_VARIABLE XCSELECT_COMMAND_RESULT OUTPUT_VARIABLE XCSELECT_COMMAND_OUTPUT ERROR_FILE /dev/null ) if(NOT XCSELECT_COMMAND_RESULT) # returned 0, we're ok. string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" XCSELECT_COMMAND_OUTPUT ${XCSELECT_COMMAND_OUTPUT}) else() string(REPLACE ";" " " XCSELECT_COMMAND_STR "${XCSELECT_COMMAND}") # message(STATUS "${XCSELECT_COMMAND_STR}") message(FATAL_ERROR "${EXTPREFIX_qt}:${XCSELECT_PROGRAM} test failed with status ${XCSELECT_COMMAND_RESULT}") endif() else() message(FATAL_ERROR "${EXTPREFIX_qt}:${XCSELECT_PROGRAM} not found. No Xcode is selected. Use xcode-select -switch to choose an Xcode version") endif() # Belts and suspenders # Beyond all the Xcode and Qt version checking, the proof of the pudding # lies in the success/failure of this command: xcrun --find xcrun. # On failure a patch is necessary, otherwise we're ok # So hard check xcrun now... set(XCRUN_OUTPUT) find_program(XCRUN_PROGRAM "xcrun") if(XCRUN_PROGRAM) message(STATUS "${EXTPREFIX_qt}:Found XCRUN_PROGRAM as ${XCRUN_PROGRAM}") set(XCRUN_COMMAND ${XCRUN_PROGRAM} "--find xcrun") execute_process( COMMAND ${XCRUN_COMMAND} RESULT_VARIABLE XCRUN_COMMAND_RESULT OUTPUT_VARIABLE XCRUN_COMMAND_OUTPUT ERROR_FILE /dev/null ) if(NOT XCRUN_COMMAND_RESULT) # returned 0, we're ok. string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" XCRUN_COMMAND_OUTPUT ${XCRUN_COMMAND_OUTPUT}) else() string(REPLACE ";" " " XCRUN_COMMAND_STR "${XCRUN_COMMAND}") # message(STATUS "${XCRUN_COMMAND_STR}") message(STATUS "${EXTPREFIX_qt}:xcrun test failed with status ${XCRUN_COMMAND_RESULT}") endif() else() message(STATUS "${EXTPREFIX_qt}:xcrun not found -- ${XCRUN_PROGRAM}") endif() # # Now configure ext_qt accordingly # if ((XCRUN_COMMAND_RESULT) AND (NOT (XCODE_VERSION VERSION_LESS 8.0.0))) # Fix Xcode xcrun related issue. # NOTE: This should be fixed by Qt 5.7.1 see here: http://code.qt.io/cgit/qt/qtbase.git/commit/?h=dev&id=77a71c32c9d19b87f79b208929e71282e8d8b5d9 # NOTE: but no one's holding their breath. set(ext_qt_PATCH_COMMAND ${PATCH_COMMAND}} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0012-Synthesize-Enter-LeaveEvent-for-accepted-QTabletEven.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0013-Poison-Qt-s-headers-with-a-mark-about-presence-of-En.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0081-Fix-no-warning-for-overwriting-files-in-non-native-d.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0082-Make-jp-e-g-default-extensions-context-aware.patch #COMMAND ${PATCH_COMMAND} -p1 -b -d /qtbase/mkspecs/features/mac -i ${CMAKE_CURRENT_SOURCE_DIR}/mac-default.patch ) message(STATUS "${EXTPREFIX_qt}:Additional patches injected.") else() # No extra patches will be applied # NOTE: defaults for some untested scenarios like xcrun fails and xcode_version < 8. # NOTE: that is uncharted territory and (hopefully) a very unlikely scenario... set(ext_qt_PATCH_COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0012-Synthesize-Enter-LeaveEvent-for-accepted-QTabletEven.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0081-Fix-no-warning-for-overwriting-files-in-non-native-d.patch COMMAND ${PATCH_COMMAND} -p1 -d qtbase -i ${CMAKE_CURRENT_SOURCE_DIR}/0082-Make-jp-e-g-default-extensions-context-aware.patch ) endif() # Qt is big - try and parallelize if at all possible include(ProcessorCount) ProcessorCount(NUM_CORES) if(NOT NUM_CORES EQUAL 0) if (NUM_CORES GREATER 2) # be nice... MATH( EXPR NUM_CORES "${NUM_CORES} - 2" ) endif() set(PARALLEL_MAKE "make;-j${NUM_CORES}") message(STATUS "${EXTPREFIX_qt}:Parallelized make: ${PARALLEL_MAKE}") else() set(PARALLEL_MAKE "make") endif() ExternalProject_Add( ext_qt DOWNLOAD_DIR ${EXTERNALS_DOWNLOAD_DIR} LOG_DOWNLOAD ON LOG_UPDATE ON LOG_CONFIGURE ON LOG_BUILD ON LOG_TEST ON LOG_INSTALL ON BUILD_IN_SOURCE ON URL https://download.qt.io/official_releases/qt/5.12/5.12.7/single/qt-everywhere-src-5.12.7.tar.xz URL_MD5 ce2c5661c028b9de6183245982d7c120 CMAKE_ARGS -DOPENSSL_LIBS='-L${EXTPREFIX_qt}/lib -lssl -lcrypto' INSTALL_DIR ${EXTPREFIX_qt} CONFIGURE_COMMAND /configure -skip qt3d -skip qtactiveqt -skip qtcanvas3d -skip qtconnectivity -skip qtdoc -skip qtgraphicaleffects -skip qtlocation -skip qtsensors -skip qtserialport -skip qtwayland -skip qtwebchannel -skip qtwebsockets -skip qtwebview -skip qtwebengine -skip qtxmlpatterns -no-sql-sqlite -skip qtcharts -skip qtdatavis3d -skip qtgamepad -skip qtnetworkauth -skip qtpurchasing -skip qtremoteobjects -skip qtscxml -skip qtserialbus -skip qtspeech -skip qtvirtualkeyboard -nomake examples -nomake tools -no-compile-examples -no-dbus -no-iconv -no-qml-debug -no-libproxy -no-system-proxies -no-icu -no-mtdev -system-zlib -qt-pcre -opensource -confirm-license -openssl-linked -prefix ${EXTPREFIX_qt} BUILD_COMMAND ${PARALLEL_MAKE} INSTALL_COMMAND make install UPDATE_COMMAND "" BUILD_IN_SOURCE 1 ) endif() diff --git a/3rdparty/ext_qt/fix-locale-android.patch b/3rdparty/ext_qt/fix-locale-android.patch new file mode 100644 index 0000000000..c8e66c245e --- /dev/null +++ b/3rdparty/ext_qt/fix-locale-android.patch @@ -0,0 +1,31 @@ +For original patch, please see: + +From 0b28f1e3bae10def59e7fe8afac29ed5355a3f1e Mon Sep 17 00:00:00 2001 +From: Andy Shaw +Date: Tue, 21 Jan 2020 15:01:55 +0100 +Subject: [PATCH] Fix QLocale::system() and uiLanguages() for the mobile platforms + +On iOS, it was no longer using the Cocoa specific code needed to get +the locale and uiLanguages information so this functionality is brought +back as it was accidently lost. + +In addition, this has a side-effect of fixing a problem with Android +versions below API 24 where it has no UiLanguages functionality so it +gets the information based on the system locale as a fallback. + +Fixes: QTBUG-81307 +Fixes: QTBUG-81357 +Change-Id: I1709675b5bd5e9cedefb99eaec28279f20a347a4 +Reviewed-by: Edward Welbourne +--- + +diff --git a/src/corelib/tools/qlocale.cpp b/src/corelib/tools/qlocale.cpp +@@ -4463,6 +4463,8 @@ + for (const auto entry : qAsConst(uiLanguages)) + locales.append(QLocale(entry)); + } ++ if (locales.isEmpty()) ++ locales.append(systemLocale()->fallbackUiLocale()); + } else + #endif + {