macOS: fix broken .pc file for libmtp

This has bugged me forever. The existing file creates a warning on every single
compiler invocation. I really need to figure out if I can get this fixed
upstream. But while I'm at it, I submitted it here to make it easier to spot
warnings in the build output.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

CMakeLists.txt

@@ -49,7 +49,7 @@ option(NO_PRINTING "disable the printing support" OFF)
 option(NO_USERMANUAL "don't include a viewer for the user manual" OFF)
 
 #Options regarding enabling parts of subsurface
-option(BTSUPPORT "enable support for QtBluetooth (requires Qt5.4 or newer)" ON)
+option(BTSUPPORT "enable support for QtBluetooth" ON)
 option(FTDISUPPORT "enable support for libftdi based serial" OFF)
 
 # Options regarding What should we build on subsurface
@@ -173,6 +173,30 @@ include_directories(.
 	${CMAKE_BINARY_DIR}/desktop-widgets
 )
 
+# figure out which version of Qt we are building against
+find_package(QT NAMES Qt6 Qt5 COMPONENTS Widgets REQUIRED)
+
+# right now there are a few things that don't work with Qt6
+# let's disable them right here and remember our Qt version
+if(QT_VERSION_MAJOR STREQUAL "6")
+	set(USINGQT6 ON)
+	set(QT5OR6 "")
+	# for Qt6 we want the Qt5 compatibility package
+	LIST(APPEND QT_EXTRA_COMPONENTS Core5Compat)
+	LIST(APPEND QT_TEST_LIBRARIES Qt::Core5Compat)
+
+	# QtWebKit doesn't work with Qt6, so no printing, no manual
+	set(NO_PRINTING ON)
+	set(NO_USERMANUAL ON)
+else()
+	set(USINGQT6 OFF)
+	set(QT5OR6 "5")
+	set(QT_VERSION ${Qt5_VERSION})
+	# for Qt5 we want the Location component (which is missing so far in Qt6)
+	LIST(APPEND QT_EXTRA_COMPONENTS Location)
+endif()
+message(STATUS "building with Qt ${QT_VERSION}")
+
 # Project Target specific configuration should go here,
 # if the configuration is too big or would disrupt the normal code flux,
 # move it somewhere else (another file) and include it.
@@ -284,39 +308,38 @@ if(ANDROID)
 	# our Qt installation. This is ugly, but it works.
 	set(CMAKE_FIND_ROOT_PATH "/;${CMAKE_FIND_ROOT_PATH}")
 endif()
-set(QT_FIND_COMPONENTS Core Concurrent Widgets Network Svg Positioning Quick Location ${QT_EXTRA_COMPONENTS})
+set(QT_FIND_COMPONENTS Core Concurrent Widgets Network Svg Positioning Quick ${QT_EXTRA_COMPONENTS})
 if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DesktopExecutable")
-	find_package(Qt5 5.9.1 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS} LinguistTools Test QuickTest)
+	find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS ${QT_FIND_COMPONENTS} LinguistTools Test QuickTest)
 elseif (SUBSURFACE_TARGET_EXECUTABLE MATCHES "MobileExecutable")
 	# Kirigami 5.62 and newer require at least Qt 5.12
 	if(ANDROID)
-		find_package(Qt5 5.12 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS} LinguistTools)
+		find_package(Qt${QT_VERSION_MAJOR} 5.12 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS} LinguistTools)
 	else()
-		find_package(Qt5 5.12 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS} LinguistTools Test QuickTest)
+		find_package(Qt${QT_VERSION_MAJOR} 5.12 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS} LinguistTools Test QuickTest)
 	endif()
 elseif (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DownloaderExecutable")
 	# let's pick a version that's not ancient
-	find_package(Qt5 5.11 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS})
+	find_package(Qt${QT_VERSION_MAJOR} 5.11 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS})
 	set(MAKE_TESTS OFF)
 endif()
-# we don't support Qt6
-# the comparison with an invalid version of 5.15 ensures that this will keep working even if
-# there are newer Qt 5.15 versions over time (which is unfortunately doubtful)
-if (Qt5Core_VERSION VERSION_GREATER 5.15.15)
-	message(FATAL_ERROR "Subsurface cannot be built against Qt 6 or later")
-endif()
 
 foreach(_QT_COMPONENT ${QT_FIND_COMPONENTS})
-	list(APPEND QT_LIBRARIES Qt5::${_QT_COMPONENT})
+	list(APPEND QT_LIBRARIES Qt${QT5OR6}::${_QT_COMPONENT})
 endforeach()
 if(NOT ANDROID)
-	set(QT_TEST_LIBRARIES ${QT_LIBRARIES} Qt5::Test Qt5::QuickTest)
+	LIST(APPEND QT_TEST_LIBRARIES ${QT_LIBRARIES} Qt${QT5OR6}::Test Qt${QT5OR6}::QuickTest)
 endif()
 
 #set up the subsurface_link_libraries variable
 set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} ${LIBDIVECOMPUTER_LIBRARIES} ${LIBGIT2_LIBRARIES} ${LIBUSB_LIBRARIES} ${LIBMTP_LIBRARIES})
 if (NOT SUBSURFACE_TARGET_EXECUTABLE MATCHES "DownloaderExecutable")
-	qt5_add_resources(SUBSURFACE_RESOURCES subsurface.qrc stats/statsicons.qrc map-widget/qml/map-widget.qrc desktop-widgets/qml/statsview2.qrc)
+	if(USINGQT6)
+		qt_add_resources(SUBSURFACE_RESOURCES subsurface.qrc stats/statsicons.qrc desktop-widgets/qml/statsview2.qrc)
+	else()
+		qt5_add_resources(SUBSURFACE_RESOURCES subsurface.qrc stats/statsicons.qrc map-widget/qml/map-widget.qrc desktop-widgets/qml/statsview2.qrc)
+		set(SUBSURFACE_MAPWIDGET subsurface_mapwidget)
+	endif()
 endif()
 
 # hack to build successfully on LGTM
@@ -333,7 +356,9 @@ add_subdirectory(qt-models)
 add_subdirectory(commands)
 if (NOT SUBSURFACE_TARGET_EXECUTABLE MATCHES "DownloaderExecutable")
 add_subdirectory(profile-widget)
+if(NOT USINGQT6)
 add_subdirectory(map-widget)
+endif()
 add_subdirectory(mobile-widgets)
 add_subdirectory(stats)
 endif()
@@ -361,9 +386,15 @@ if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "MobileExecutable")
 		subsurface-mobile-main.cpp
 		subsurface-helper.cpp
 	)
-	qt5_add_resources(MOBILE_RESOURCES mobile-widgets/qml/mobile-resources.qrc)
-	qt5_add_resources(MOBILE_RESOURCES mobile-widgets/3rdparty/icons.qrc)
-	qt5_add_resources(MOBILE_RESOURCES mobile-widgets/3rdparty/kirigami/src/scenegraph/shaders/shaders.qrc)
+	if(USINGQT6)
+		qt_add_resources(MOBILE_RESOURCES mobile-widgets/qml/mobile-resources.qrc)
+		qt_add_resources(MOBILE_RESOURCES mobile-widgets/3rdparty/icons.qrc)
+		qt_add_resources(MOBILE_RESOURCES mobile-widgets/3rdparty/kirigami/src/scenegraph/shaders/shaders.qrc)
+	else()
+		qt5_add_resources(MOBILE_RESOURCES mobile-widgets/qml/mobile-resources.qrc)
+		qt5_add_resources(MOBILE_RESOURCES mobile-widgets/3rdparty/icons.qrc)
+		qt5_add_resources(MOBILE_RESOURCES mobile-widgets/3rdparty/kirigami/src/scenegraph/shaders/shaders.qrc)
+	endif()
 
 	# the following is split across two commands since in cmake 3.12 this would result
 	# in a non-sensical "no sources given to target" error if done all as one set of
@@ -374,7 +405,7 @@ if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "MobileExecutable")
 		${SUBSURFACE_TARGET}
 		subsurface_mobile
 		subsurface_profile
-		subsurface_mapwidget
+		${SUBSURFACE_MAPWIDGET}
 		subsurface_backend_shared
 		subsurface_models_mobile
 		subsurface_commands
@@ -401,7 +432,7 @@ elseif (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DesktopExecutable")
 		subsurface_interface
 		subsurface_profile
 		subsurface_statistics
-		subsurface_mapwidget
+		${SUBSURFACE_MAPWIDGET}
 		subsurface_backend_shared
 		subsurface_models_desktop
 		subsurface_commands
@@ -461,7 +492,11 @@ set(DOCFILES
 FILE(STRINGS "subsurface_enabled_translations" QTTRANSLATIONS_BASE)
 
 if(NOT DEFINED QT_TRANSLATION_DIR OR QT_TRANSLATION_DIR STREQUAL "")
-	set(QT_TRANSLATION_DIR ${Qt5Core_DIR}/../../../translations)
+	if(USINGQT6)
+		set(QT_TRANSLATION_DIR ${QtCore_DIR}/../../../translations)
+	else()
+		set(QT_TRANSLATION_DIR ${Qt5Core_DIR}/../../../translations)
+	endif()
 endif()
 set(QTTRANSLATIONS "")
 foreach(QTTRANSLATION ${QTTRANSLATIONS_BASE})
@@ -502,34 +537,44 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
 	install(FILES ${QTTRANSLATIONS} DESTINATION ${RESOURCEDIR}/translations)
 	install(FILES ${CMAKE_SOURCE_DIR}/gpl-2.0.txt DESTINATION ${RESOURCEDIR})
 	install(CODE "execute_process(COMMAND mkdir -p ${RESOURCEDIR}/qml)")
-	install(CODE "execute_process(COMMAND mkdir -p ${PLUGINDIR}/geoservices)")
-	install(CODE "execute_process(COMMAND cp ${_qt5Core_install_prefix}/plugins/geoservices/libqtgeoservices_googlemaps.dylib ${PLUGINDIR}/geoservices ERROR_QUIET)")
-	install(CODE "execute_process(COMMAND cp ${CMAKE_SOURCE_DIR}/../install-root/${_qt5Core_install_prefix}/plugins/geoservices/libqtgeoservices_googlemaps.dylib ${PLUGINDIR}/geoservices ERROR_QUIET)")
-	# this is a hack - but I don't know how else to find the macdeployqt program if it's not in the PATH
-	string(REPLACE moc macdeployqt MACDEPLOYQT ${QT_MOC_EXECUTABLE})
-	install(CODE "execute_process(COMMAND ${MACDEPLOYQT} ${APP_BUNDLE_DIR} -no-strip ${MACDEPLOY_ARGS})")
+	if(QT_VERSION VERSION_LESS 6.0.0)
+		set(QT_INSTALL_PREFIX ${_qt5Core_install_prefix})
+		install(CODE "execute_process(COMMAND mkdir -p ${PLUGINDIR}/geoservices)")
+		install(CODE "execute_process(COMMAND cp ${QT_INSTALL_PREFIX}/plugins/geoservices/libqtgeoservices_googlemaps.dylib ${PLUGINDIR}/geoservices ERROR_QUIET)")
+		install(CODE "execute_process(COMMAND cp ${CMAKE_SOURCE_DIR}/../install-root/${QT_INSTALL_PREFIX}/plugins/geoservices/libqtgeoservices_googlemaps.dylib ${PLUGINDIR}/geoservices ERROR_QUIET)")
+	else()
+		set(QT_INSTALL_PREFIX ${QT6_INSTALL_PREFIX})
+	endif()
+	# this will fail is macdeployqt isn't in the PATH - that seemed to happen in the past, but not recently
+	# also, on M1 macOS systems macdeployqt throws a ton of (apparently harmless) errors. Warn the unsuspecting developer
+	if(CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64")
+		install(CODE "execute_process(COMMAND echo the following macdeployqt command will spew out a ton of harmless otool output parsing errors)")
+	endif()
+	install(CODE "execute_process(COMMAND macdeployqt ${APP_BUNDLE_DIR} -no-strip ${MACDEPLOY_ARGS})")
 	# the next hack is here to delete the sqlite plugin that get's installed even though it isn't needed
 	install(CODE "execute_process(COMMAND rm -rf ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/PlugIns/sqldrivers)")
 	# and another hack to get the QML Components in the right place
-	install(CODE "execute_process(COMMAND rm -rf ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml/{QtQuick.2,QtLocation,QtPositioning})")
-	install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtQuick.2 ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
-	install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtLocation ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
-	install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtPositioning ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
-	if(NOT Qt5Core_VERSION VERSION_LESS 5.11.0)
+	if(QT_VERSION VERSION_LESS 6.0.0)
+		install(CODE "execute_process(COMMAND rm -rf ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml/{QtQuick.2,QtLocation,QtPositioning})")
+		install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/qml/QtQuick.2 ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
+		install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/qml/QtLocation ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
+	endif()
+	install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/qml/QtPositioning ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
+	if(NOT QT_VERSION VERSION_LESS 5.11.0)
 		# and with Qt 5.11 we need another library that isn't copied by macdeployqt
 		install(CODE "execute_process(COMMAND rm -rf ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Frameworks/QtPositioningQuick.framework)")
-		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/lib/QtPositioningQuick.framework ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Frameworks)")
+		install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/lib/QtPositioningQuick.framework ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Frameworks)")
 	endif()
-	if(NOT Qt5Core_VERSION VERSION_LESS 5.14.0)
+	if(NOT QT_VERSION VERSION_LESS 5.14.0)
 		# and with Qt 5.14 we need another library that isn't always copied by macdeployqt
 		install(CODE "execute_process(COMMAND rm -rf ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Frameworks/QtQmlWorkerScript.framework)")
-		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/lib/QtQmlWorkerScript.framework ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Frameworks)")
+		install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/lib/QtQmlWorkerScript.framework ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Frameworks)")
 	endif()
 	if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "MobileExecutable")
-		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtQuick ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
-		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtGraphicalEffects ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
-		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtQml ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
-		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtPositioning ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
+		install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/qml/QtQuick ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
+		install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/qml/QtGraphicalEffects ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
+		install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/qml/QtQml ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
+		install(CODE "execute_process(COMMAND cp -a ${QT_INSTALL_PREFIX}/qml/QtPositioning ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
 	endif()
 elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
 	if (CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
@@ -563,10 +608,10 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
 	install(TARGETS ${SUBSURFACE_TARGET} DESTINATION ${WINDOWSSTAGING})
 	install(FILES ${CMAKE_BINARY_DIR}/qt.conf DESTINATION ${WINDOWSSTAGING})
 
-	if(NOT Qt5Core_VERSION VERSION_LESS 5.11.0)
+	if(NOT QT_VERSION VERSION_LESS 5.11.0)
 		# hack to work around the fact that we don't process the dependencies of plugins
 		# as of Qt 5.11 this additional DLL is needed and it's only referenced in the qml DLLs
-		install(FILES ${_qt5Core_install_prefix}/bin/Qt5PositioningQuick.dll DESTINATION ${WINDOWSSTAGING})
+		install(FILES ${QT_INSTALL_PREFIX}/bin/QtPositioningQuick.dll DESTINATION ${WINDOWSSTAGING})
 	endif()
 
 	if(NOT DEFINED MAKENSIS)

cmake/Modules/MacOSXBundleInfo.plist.in

@@ -34,5 +34,9 @@
 	<string>${MACOSX_BUNDLE_COPYRIGHT}</string>
 	<key>NSHighResolutionCapable</key>
 	<true/>
+	<key>NSSupportsAutomaticGraphicsSwitching</key>
+	<true/>
+	<key>NSBluetoothAlwaysUsageDescription</key>
+	<string>Subsurface needs access to your Bluetooth peripherals in order to download dive information directly from BLE enabled dive computers.</string>
 </dict>
 </plist>

core/btdiscovery.cpp

@@ -192,7 +192,11 @@ void BTDiscovery::BTDiscoveryReDiscover()
 			connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered, this, &BTDiscovery::btDeviceDiscovered);
 			connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::finished, this, &BTDiscovery::btDeviceDiscoveryFinished);
 			connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::canceled, this, &BTDiscovery::btDeviceDiscoveryFinished);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+			connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::errorOccurred,
+#else
 			connect(discoveryAgent, QOverload<QBluetoothDeviceDiscoveryAgent::Error>::of(&QBluetoothDeviceDiscoveryAgent::error),
+#endif
 				[this](QBluetoothDeviceDiscoveryAgent::Error error){
 					qDebug() << "device discovery received error" << discoveryAgent->errorString();
 				});

core/divefilter.cpp

@@ -148,7 +148,9 @@ void DiveFilter::startFilterDiveSites(QVector<dive_site *> ds)
 		dive_sites = ds;
 		// When switching into dive site mode, reload the dive sites.
 		// TODO: why here? why not catch the filterReset signal in the map widget
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 		MapWidget::instance()->reload();
+#endif
 		emit diveListNotifier.filterReset();
 	}
 }
@@ -159,7 +161,9 @@ void DiveFilter::stopFilterDiveSites()
 		return;
 	dive_sites.clear();
 	emit diveListNotifier.filterReset();
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	MapWidget::instance()->reload();
+#endif
 }
 
 void DiveFilter::setFilterDiveSite(QVector<dive_site *> ds)
@@ -172,8 +176,10 @@ void DiveFilter::setFilterDiveSite(QVector<dive_site *> ds)
 	dive_sites = ds;
 
 	emit diveListNotifier.filterReset();
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	MapWidget::instance()->setSelected(dive_sites);
 	MapWidget::instance()->selectionChanged();
+#endif
 	MainWindow::instance()->diveList->expandAll();
 }
 

core/parse-gpx.cpp

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "core/parse-gpx.h"
 #include "core/subsurface-time.h"
+#include "core/qthelper.h"
 #include <QFile>
 #include <QXmlStreamReader>
 
@@ -43,7 +44,7 @@ int getCoordsFromGPXFile(struct dive_coords *coords, QString fileName)
 	while (!gpxReader.atEnd()) {
 		gpxReader.readNext();
 		if (gpxReader.isStartElement()) {
-			if (gpxReader.name() == "trkpt") {
+			if (nameCmp(gpxReader, "trkpt") == 0) {
 				trkpt_found = true;
 				line++;
 				foreach (const QXmlStreamAttribute &attr, gpxReader.attributes()) {
@@ -53,7 +54,7 @@ int getCoordsFromGPXFile(struct dive_coords *coords, QString fileName)
 						lon = attr.value().toString().toDouble();
 				}
 			}
-			if (gpxReader.name() == "time" && trkpt_found) {  // Ignore the <time> element in the GPX file header
+			if (nameCmp(gpxReader, "time") == 0 && trkpt_found) {  // Ignore the <time> element in the GPX file header
 				QString dateTimeString = gpxReader.readElementText();
 				bool ok;
 				tm1.tm_year = dateTimeString.left(4).toInt(&ok, 10);  // Extract the date/time components:

core/qt-ble.cpp

@@ -110,7 +110,7 @@ static const char *match_uuid_list(const QBluetoothUuid &match, const struct uui
 	const char *uuid;
 
 	while ((uuid = array->uuid) != NULL) {
-		if (match == QUuid(uuid))
+		if (match == QBluetoothUuid(QUuid(uuid)))
 			return array->details;
 		array++;
 	}
@@ -220,7 +220,11 @@ void BLEObject::addService(const QBluetoothUuid &newService)
 		service->connect(service, &QLowEnergyService::stateChanged,[=](QLowEnergyService::ServiceState newState) {
 			qDebug() << "   .. service state changed to" << newState;
 		});
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+		service->connect(service, &QLowEnergyService::errorOccurred,
+#else
 		service->connect(service, QOverload<QLowEnergyService::ServiceError>::of(&QLowEnergyService::error),
+#endif
 				 [=](QLowEnergyService::ServiceError newError) {
 			qDebug() << "error discovering service details" << newError;
 		});
@@ -393,8 +397,13 @@ dc_status_t BLEObject::select_preferred_service(void)
 {
 	// Wait for each service to finish discovering
 	foreach (const QLowEnergyService *s, services) {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+		WAITFOR(s->state() != QLowEnergyService::RemoteServiceDiscovering, BLE_TIMEOUT);
+		if (s->state() == QLowEnergyService::RemoteServiceDiscovering)
+#else
 		WAITFOR(s->state() != QLowEnergyService::DiscoveringServices, BLE_TIMEOUT);
 		if (s->state() == QLowEnergyService::DiscoveringServices)
+#endif
 			qDebug() << " .. service " << s->serviceUuid() << "still hasn't completed discovery - trouble ahead";
 	}
 
@@ -412,7 +421,11 @@ dc_status_t BLEObject::select_preferred_service(void)
 
 	// Pick the preferred one
 	foreach (QLowEnergyService *s, services) {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+		if (s->state() != QLowEnergyService::RemoteServiceDiscovered)
+#else
 		if (s->state() != QLowEnergyService::ServiceDiscovered)
+#endif
 			continue;
 
 		bool hasread = false;
@@ -604,7 +617,11 @@ dc_status_t qt_ble_open(void **io, dc_context_t *, const char *devaddr, device_d
 			ble->addService(s);
 		}
 	});
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+	ble->connect(controller, &QLowEnergyController::errorOccurred, [=](QLowEnergyController::Error newError) {
+#else
 	ble->connect(controller, QOverload<QLowEnergyController::Error>::of(&QLowEnergyController::error), [=](QLowEnergyController::Error newError) {
+#endif
 		qDebug() << "controler discovery error" << controller->errorString() << newError;
 	});
 

core/qt-ble.h

@@ -60,16 +60,16 @@ private:
 	unsigned int desc_written = 0;
 	int timeout;
 
-	QList<QUuid> telit = {
-		"{00000001-0000-1000-8000-008025000000}", // TELIT_DATA_RX
-		"{00000002-0000-1000-8000-008025000000}", // TELIT_DATA_TX
-		"{00000003-0000-1000-8000-008025000000}", // TELIT_CREDITS_RX
-		"{00000004-0000-1000-8000-008025000000}"  // TELIT_CREDITS_TX
+	QList<QBluetoothUuid> telit = {
+		QBluetoothUuid(QUuid("{00000001-0000-1000-8000-008025000000}")), // TELIT_DATA_RX
+		QBluetoothUuid(QUuid("{00000002-0000-1000-8000-008025000000}")), // TELIT_DATA_TX
+		QBluetoothUuid(QUuid("{00000003-0000-1000-8000-008025000000}")), // TELIT_CREDITS_RX
+		QBluetoothUuid(QUuid("{00000004-0000-1000-8000-008025000000}"))  // TELIT_CREDITS_TX
 	};
 
-	QList<QUuid> ublox = {
-		"{2456e1b9-26e2-8f83-e744-f34f01e9d703}", // UBLOX_DATA_RX, UBLOX_DATA_TX
-		"{2456e1b9-26e2-8f83-e744-f34f01e9d704}"  // UBLOX_CREDITS_RX, UBLOX_CREDITS_TX
+	QList<QBluetoothUuid> ublox = {
+		QBluetoothUuid(QUuid("{2456e1b9-26e2-8f83-e744-f34f01e9d703}")), // UBLOX_DATA_RX, UBLOX_DATA_TX
+		QBluetoothUuid(QUuid("{2456e1b9-26e2-8f83-e744-f34f01e9d704}"))  // UBLOX_CREDITS_RX, UBLOX_CREDITS_TX
 	};
 };
 

core/qt-init.cpp

@@ -1,3 +1,4 @@
+
 // SPDX-License-Identifier: GPL-2.0
 #include <QApplication>
 #include <Qt>
@@ -50,7 +51,7 @@ void init_qt_late()
 	}
 	// Disables the WindowContextHelpButtonHint by default on Qt::Sheet and Qt::Dialog widgets.
 	// This hides the ? button on Windows, which only makes sense if you use QWhatsThis functionality.
-#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0) && QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	QCoreApplication::setAttribute(Qt::AA_DisableWindowContextHelpButton);
 #endif
 	qPref::load();

core/qthelper.cpp

@@ -753,9 +753,9 @@ timestamp_t dateTimeToTimestamp(const QDateTime &t)
 QString render_seconds_to_string(int seconds)
 {
 	if (seconds % 60 == 0)
-		return QDateTime::fromTime_t(seconds).toUTC().toString("h:mm");
+		return QDateTime::fromSecsSinceEpoch(seconds, Qt::UTC).toUTC().toString("h:mm");
 	else
-		return QDateTime::fromTime_t(seconds).toUTC().toString("h:mm:ss");
+		return QDateTime::fromSecsSinceEpoch(seconds, Qt::UTC).toUTC().toString("h:mm:ss");
 }
 
 int parseDurationToSeconds(const QString &text)

core/qthelper.h

@@ -20,6 +20,7 @@ enum watertypes {FRESHWATER, BRACKISHWATER, EN13319WATER, SALTWATER, DC_WATERTYP
 #ifdef __cplusplus
 
 #include <QString>
+#include <QXmlStreamReader>
 #include "core/gettextfromc.h"
 class QImage;
 
@@ -29,6 +30,12 @@ class QImage;
 #define SKIP_EMPTY QString::SkipEmptyParts
 #endif
 
+// this is annoying Qt5 / Qt6 incompatibility where we can't compare against string literals anymore
+static inline int nameCmp(QXmlStreamReader &r, const char * cs)
+{
+	return r.name().compare(QLatin1String(cs));
+}
+
 QString weight_string(int weight_in_grams);
 QString distance_string(int distanceInMeters);
 bool gpsHasChanged(struct dive *dive, struct dive *master, const QString &gps_text, bool *parsed_out = 0);

desktop-widgets/CMakeLists.txt

@@ -1,6 +1,10 @@
 # create the libraries
 file(GLOB SUBSURFACE_UI *.ui)
-qt5_wrap_ui(SUBSURFACE_UI_HDRS ${SUBSURFACE_UI})
+if(NOT USINGQT6)
+	qt5_wrap_ui(SUBSURFACE_UI_HDRS ${SUBSURFACE_UI})
+else()
+	qt_wrap_ui(SUBSURFACE_UI_HDRS ${SUBSURFACE_UI})
+endif()
 source_group("Subsurface Interface Files" FILES ${SUBSURFACE_UI})
 
 if(BTSUPPORT)
@@ -94,8 +98,6 @@ set(SUBSURFACE_INTERFACE
 	locationinformation.h
 	mainwindow.cpp
 	mainwindow.h
-	mapwidget.cpp
-	mapwidget.h
 	modeldelegates.cpp
 	modeldelegates.h
 	notificationwidget.cpp
@@ -139,6 +141,12 @@ set(SUBSURFACE_INTERFACE
 	updatemanager.cpp
 	updatemanager.h
 )
+if(NOT USINGQT6)
+	LIST(APPEND SUBSURFACE_INTERFACE
+		mapwidget.cpp
+		mapwidget.h
+	)
+endif()
 
 if(NOT NO_USERMANUAL)
 	set(SUBSURFACE_INTERFACE ${SUBSURFACE_INTERFACE}
@@ -178,7 +186,11 @@ set(SUBSURFACE_STATISTICS_LIB_SRCS
 )
 source_group("Subsurface Statistics" FILES ${SUBSURFACE_STATISTICS_LIB_SRCS})
 
-qt5_wrap_ui(SUBSURFACE_UI_SRCS ${SUBSURFACE_UI})
+if(NOT USINGQT6)
+	qt5_wrap_ui(SUBSURFACE_UI_SRCS ${SUBSURFACE_UI})
+else()
+	qt_wrap_ui(SUBSURFACE_UI_SRCS ${SUBSURFACE_UI})
+endif()
 
 add_library(subsurface_statistics STATIC ${SUBSURFACE_STATISTICS_LIB_SRCS})
 target_link_libraries(subsurface_statistics ${QT_LIBRARIES})

desktop-widgets/about.cpp

@@ -19,9 +19,9 @@ SubsurfaceAbout::SubsurfaceAbout(QWidget *parent) : QDialog(parent, QFlag(0))
 				  "Linus Torvalds, Dirk Hohndel, Tomaz Canabrava, Berthold Stoeger, and others, 2011-2022"
 				  "</span>").arg(versionString));
 
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, SIGNAL(activated()), this, SLOT(close()));
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), parent, SLOT(close()));
 }
 

desktop-widgets/btdeviceselectiondialog.cpp

@@ -18,7 +18,7 @@ BtDeviceSelectionDialog::BtDeviceSelectionDialog(QWidget *parent) :
 	ui->setupUi(this);
 
 	// Quit button callbacks
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), this, SLOT(reject()));
 	connect(ui->quit, SIGNAL(clicked()), this, SLOT(reject()));
 
@@ -473,11 +473,16 @@ void BtDeviceSelectionDialog::updateLocalDeviceInformation()
 	ui->discoveredDevicesList->setContextMenuPolicy(Qt::CustomContextMenu);
 	connect(ui->discoveredDevicesList, SIGNAL(customContextMenuRequested(QPoint)),
 		this, SLOT(displayPairingMenu(QPoint)));
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+	connect(localDevice, &QBluetoothLocalDevice::pairingFinished, this, &BtDeviceSelectionDialog::pairingFinished);
+	connect(localDevice, &QBluetoothLocalDevice::errorOccurred, this, &BtDeviceSelectionDialog::error);
+#else
 	connect(localDevice, SIGNAL(pairingFinished(QBluetoothAddress, QBluetoothLocalDevice::Pairing)),
 		this, SLOT(pairingFinished(QBluetoothAddress, QBluetoothLocalDevice::Pairing)));
 
 	connect(localDevice, SIGNAL(error(QBluetoothLocalDevice::Error)),
 		this, SLOT(error(QBluetoothLocalDevice::Error)));
+#endif
 }
 
 void BtDeviceSelectionDialog::initializeDeviceDiscoveryAgent()
@@ -494,10 +499,19 @@ void BtDeviceSelectionDialog::initializeDeviceDiscoveryAgent()
 		ui->clear->setEnabled(false);
 		return;
 	}
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+	connect(remoteDeviceDiscoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered,
+		this, &BtDeviceSelectionDialog::addRemoteDevice);
+	connect(remoteDeviceDiscoveryAgent, &QBluetoothDeviceDiscoveryAgent::finished,
+		this, &BtDeviceSelectionDialog::remoteDeviceScanFinished);
+	connect(remoteDeviceDiscoveryAgent, &QBluetoothDeviceDiscoveryAgent::errorOccurred,
+		this, &BtDeviceSelectionDialog::deviceDiscoveryError);
+#else
 	connect(remoteDeviceDiscoveryAgent, SIGNAL(deviceDiscovered(QBluetoothDeviceInfo)),
 		this, SLOT(addRemoteDevice(QBluetoothDeviceInfo)));
 	connect(remoteDeviceDiscoveryAgent, SIGNAL(finished()),
 		this, SLOT(remoteDeviceScanFinished()));
 	connect(remoteDeviceDiscoveryAgent, SIGNAL(error(QBluetoothDeviceDiscoveryAgent::Error)),
 		this, SLOT(deviceDiscoveryError(QBluetoothDeviceDiscoveryAgent::Error)));
+#endif
 }

desktop-widgets/divelistview.cpp

@@ -523,7 +523,9 @@ void DiveListView::selectionChangeDone()
 			if (d->selected && !d->hidden_by_filter && d->dive_site && !selectedSites.contains(d->dive_site))
 				selectedSites.push_back(d->dive_site);
 		}
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 		MapWidget::instance()->setSelected(selectedSites);
+#endif
 	}
 	emit divesSelected();
 }

desktop-widgets/divelogexportdialog.cpp

@@ -37,9 +37,9 @@ DiveLogExportDialog::DiveLogExportDialog(QWidget *parent) : QDialog(parent),
 {
 	ui->setupUi(this);
 	showExplanation();
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), MainWindow::instance(), SLOT(close()));
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, SIGNAL(activated()), this, SLOT(close()));
 
 	/* the names are not the actual values exported to the json files,The font-family property should hold several
@@ -246,7 +246,7 @@ void DiveLogExportDialog::on_buttonBox_accepted()
 		qPrefDisplay::set_lastDir(fileInfo.dir().path());
 		// the non XSLT exports are called directly above, the XSLT based ons are called here
 		if (!stylesheet.isEmpty()) {
-			QFuture<void> future = exportUsingStyleSheet(filename, ui->exportSelected->isChecked(),
+			QFuture<int> future = exportUsingStyleSheet(filename, ui->exportSelected->isChecked(),
 					ui->CSVUnits_2->currentIndex(), stylesheet.toUtf8(), ui->anonymize->isChecked());
 			MainWindow::instance()->getNotificationWidget()->showNotification(tr("Please wait, exporting..."), KMessageWidget::Information);
 			MainWindow::instance()->getNotificationWidget()->setFuture(future);

desktop-widgets/divelogimportdialog.cpp

@@ -10,6 +10,7 @@
 #include <QRegularExpression>
 #include <QUndoStack>
 #include <QPainter>
+#include <QFile>
 #include "core/filterpreset.h"
 #include "core/qthelper.h"
 #include "core/divesite.h"
@@ -380,9 +381,9 @@ DiveLogImportDialog::DiveLogImportDialog(QStringList fn, QWidget *parent) : QDia
 	loadFileContents(-1, INITIAL);
 
 	/* manually import CSV file */
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, SIGNAL(activated()), this, SLOT(close()));
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), parent, SLOT(close()));
 
 	connect(ui->CSVSeparator, SIGNAL(currentIndexChanged(int)), this, SLOT(loadFileContentsSeperatorSelected(int)));

desktop-widgets/diveshareexportdialog.cpp

@@ -18,6 +18,8 @@ DiveShareExportDialog::DiveShareExportDialog(QWidget *parent) :
 	exportSelected(false)
 {
 	ui->setupUi(this);
+	// creating this connection in the .ui file appears to fail with Qt6
+	connect(ui->getUIDbutton, &QPushButton::clicked, this, &DiveShareExportDialog::UIDFromBrowser);
 }
 
 DiveShareExportDialog::~DiveShareExportDialog()

desktop-widgets/diveshareexportdialog.ui

@@ -235,22 +235,6 @@ p, li { white-space: pre-wrap; }
     </hint>
    </hints>
   </connection>
-  <connection>
-   <sender>getUIDbutton</sender>
-   <signal>clicked()</signal>
-   <receiver>DiveShareExportDialog</receiver>
-   <slot>UIDFromBrowser()</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>223</x>
-     <y>29</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>159</x>
-     <y>215</y>
-    </hint>
-   </hints>
-  </connection>
   <connection>
    <sender>doUploadButton</sender>
    <signal>clicked()</signal>

desktop-widgets/divesiteimportdialog.cpp

@@ -16,8 +16,8 @@
 DivesiteImportDialog::DivesiteImportDialog(struct dive_site_table &imported, QString source, QWidget *parent) : QDialog(parent),
 	importedSource(source)
 {
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 
 	divesiteImportedModel = new DivesiteImportedModel(this);
 

desktop-widgets/downloadfromdivecomputer.cpp

@@ -31,8 +31,8 @@ DownloadFromDCWidget::DownloadFromDCWidget(QWidget *parent) : QDialog(parent, QF
 {
 	diveImportedModel = new DiveImportedModel(this);
 	vendorModel.setStringList(vendorList);
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 
 	int startingWidth = defaultModelFont().pointSize();
 
@@ -311,7 +311,7 @@ void DownloadFromDCWidget::updateState(states state)
 	currentState = state;
 }
 
-void DownloadFromDCWidget::on_vendor_currentIndexChanged(const QString &vendor)
+void DownloadFromDCWidget::on_vendor_currentTextChanged(const QString &vendor)
 {
 	unsigned int transport;
 	dc_descriptor_t *descriptor;
@@ -323,7 +323,7 @@ void DownloadFromDCWidget::on_vendor_currentIndexChanged(const QString &vendor)
 	fill_device_list(transport);
 }
 
-void DownloadFromDCWidget::on_product_currentIndexChanged(const QString &)
+void DownloadFromDCWidget::on_product_currentTextChanged(const QString &)
 {
 	updateDeviceEnabled();
 }

desktop-widgets/downloadfromdivecomputer.h

@@ -42,8 +42,8 @@ slots:
 	void on_ok_clicked();
 	void on_cancel_clicked();
 	void on_search_clicked();
-	void on_vendor_currentIndexChanged(const QString &vendor);
-	void on_product_currentIndexChanged(const QString &product);
+	void on_vendor_currentTextChanged(const QString &vendor);
+	void on_product_currentTextChanged(const QString &product);
 	void on_device_currentTextChanged(const QString &device);
 
 	void onDownloadThreadFinished();

desktop-widgets/groupedlineedit.cpp

@@ -37,6 +37,8 @@
 #include <QStyle>
 #include <QStyleOptionFocusRect>
 #include <QDebug>
+#include <QList>
+#include <QVector>
 #include <cmath>
 
 struct GroupedLineEdit::Private {

desktop-widgets/locationinformation.cpp

@@ -20,7 +20,9 @@
 #include <QItemSelectionModel>
 #include <qmessagebox.h>
 #include <cstdlib>
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include <QDesktopWidget>
+#endif
 #include <QFileDialog>
 #include <QScrollBar>
 
@@ -587,7 +589,11 @@ void DiveLocationLineEdit::keyPressEvent(QKeyEvent *ev)
 
 void DiveLocationLineEdit::fixPopupPosition()
 {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+	const QRect screen = this->screen()->availableGeometry();
+#else
 	const QRect screen = QApplication::desktop()->availableGeometry(this);
+#endif
 	const int maxVisibleItems = 5;
 	QPoint pos;
 	int rh, w;

desktop-widgets/mainwindow.cpp

@@ -8,7 +8,9 @@
 
 #include <QFileDialog>
 #include <QMessageBox>
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include <QDesktopWidget>
+#endif
 #include <QSettings>
 #include <QShortcut>
 #include <QStatusBar>
@@ -132,7 +134,9 @@ MainWindow::MainWindow() : QMainWindow(),
 	// for the "default" mode
 	mainTab.reset(new MainTab);
 	diveList.reset(new DiveListView);
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	mapWidget.reset(MapWidget::instance()); // Yes, this is ominous see comment in mapwidget.cpp.
+#endif
 	plannerWidgets.reset(new PlannerWidgets);
 	statistics.reset(new StatsWidget);
 	profile.reset(new ProfileWidget);
@@ -198,7 +202,9 @@ MainWindow::MainWindow() : QMainWindow(),
 	initialUiSetup();
 	readSettings();
 	diveList->setFocus();
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	MapWidget::instance()->reload();
+#endif
 	diveList->expand(diveList->model()->index(0, 0));
 	diveList->scrollTo(diveList->model()->index(0, 0), QAbstractItemView::PositionAtCenter);
 #ifdef NO_USERMANUAL
@@ -210,8 +216,8 @@ MainWindow::MainWindow() : QMainWindow(),
 	updateManager = new UpdateManager(this);
 	undoAction = Command::undoAction(this);
 	redoAction = Command::redoAction(this);
-	undoAction->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Z));
-	redoAction->setShortcut(QKeySequence(Qt::CTRL + Qt::SHIFT + Qt::Key_Z));
+	undoAction->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_Z));
+	redoAction->setShortcut(QKeySequence(Qt::CTRL | Qt::SHIFT | Qt::Key_Z));
 	ui.menu_Edit->addActions({ undoAction, redoAction });
 
 #ifndef NO_PRINTING
@@ -327,7 +333,9 @@ void MainWindow::selectionChanged()
 	if (current_dive)
 		enableDisableOtherDCsActions();
 	profile->plotCurrentDive();
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	MapWidget::instance()->selectionChanged();
+#endif
 }
 
 void MainWindow::on_actionNew_triggered()
@@ -508,7 +516,9 @@ void MainWindow::closeCurrentFile()
 	clear_dive_file_data(); // this clears all the core data structures and resets the models
 	setCurrentFile(nullptr);
 	diveList->setSortOrder(DiveTripModelBase::NR, Qt::DescendingOrder);
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	MapWidget::instance()->reload();
+#endif
 	if (!existing_filename)
 		setTitle();
 	disableShortcuts();
@@ -570,8 +580,8 @@ void MainWindow::enableShortcuts()
 	redoAction->setEnabled(true);
 	ui.actionPreviousDC->setShortcut(Qt::Key_Left);
 	ui.actionNextDC->setShortcut(Qt::Key_Right);
-	ui.copy->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_C));
-	ui.paste->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_V));
+	ui.copy->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_C));
+	ui.paste->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_V));
 }
 
 void MainWindow::showProfile()
@@ -724,9 +734,9 @@ void MainWindow::on_actionYearlyStatistics_triggered()
 	l->addWidget(view);
 	d.resize(lrint(width() * .8), height() / 2);
 	d.move(lrint(width() * .1), height() / 4);
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), &d);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), &d);
 	connect(close, SIGNAL(activated()), &d, SLOT(close()));
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), &d);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), &d);
 	connect(quit, SIGNAL(activated()), this, SLOT(close()));
 	d.setWindowFlags(Qt::Window | Qt::CustomizeWindowHint
 		| Qt::WindowCloseButtonHint | Qt::WindowTitleHint | Qt::WindowMaximizeButtonHint);
@@ -799,9 +809,13 @@ void MainWindow::restoreSplitterSizes()
 		topSplitter->restoreState(settings.value("topSplitter").toByteArray());
 		bottomSplitter->restoreState(settings.value("bottomSplitter").toByteArray());
 	} else {
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 		const int appH = qApp->desktop()->size().height();
 		const int appW = qApp->desktop()->size().width();
-
+#else
+		const int appH = screen()->size().height();
+		const int appW = screen()->size().width();
+#endif
 		ui.mainSplitter->setSizes({ appH * 3 / 5, appH * 2 / 5 });
 		topSplitter->setSizes({ appW / 2, appW / 2 });
 		bottomSplitter->setSizes({ appW * 3 / 5, appW * 2 / 5 });

desktop-widgets/notificationwidget.cpp

@@ -31,7 +31,7 @@ QString NotificationWidget::getNotificationText()
 	return text();
 }
 
-void NotificationWidget::setFuture(const QFuture<void> &future)
+void NotificationWidget::setFuture(const QFuture<int> &future)
 {
 	future_watcher.setFuture(future);
 }

desktop-widgets/notificationwidget.h

@@ -16,7 +16,7 @@ class NotificationWidget : public KMessageWidget {
 
 public:
 	explicit NotificationWidget(QWidget *parent = 0);
-	void setFuture(const QFuture<void> &future);
+	void setFuture(const QFuture<int> &future);
 	void showNotification(QString message, KMessageWidget::MessageType type);
 	void hideNotification();
 	QString getNotificationText();
@@ -25,7 +25,7 @@ public
 slots:
 	void showError(QString message);
 private:
-	QFutureWatcher<void> future_watcher;
+	QFutureWatcher<int> future_watcher;
 
 private
 slots:

desktop-widgets/preferences/CMakeLists.txt

@@ -19,7 +19,11 @@ set(SUBSURFACE_PREFERENCES_UI
   preferences_units.ui
 )
 
-qt5_wrap_ui(SUBSURFACE_PREFERENCES_UI_HDRS ${SUBSURFACE_PREFERENCES_UI})
+if(NOT USINGQT6)
+	qt5_wrap_ui(SUBSURFACE_PREFERENCES_UI_HDRS ${SUBSURFACE_PREFERENCES_UI})
+else()
+	qt_wrap_ui(SUBSURFACE_PREFERENCES_UI_HDRS ${SUBSURFACE_PREFERENCES_UI})
+endif()
 
 source_group("Subsurface Interface Files" FILES ${SUBSURFACE_PREFERENCES_UI})
 

desktop-widgets/profilewidget.cpp

@@ -81,7 +81,9 @@ ProfileWidget::ProfileWidget()
 
 	QHBoxLayout *layout = new QHBoxLayout(this);
 	layout->setSpacing(0);
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	layout->setMargin(0);
+#endif
 	layout->setContentsMargins(0, 0, 0, 0);
 	layout->addWidget(toolBar);
 	layout->addWidget(stack);

desktop-widgets/shifttimes.ui

@@ -198,17 +198,5 @@
     </hint>
    </hints>
   </connection>
-  <connection>
-   <sender>timeEdit</sender>
-   <signal>timeChanged(const QTime)</signal>
-   <receiver>ShiftTimesDialog</receiver>
-   <slot>changeTime()</slot>
-  </connection>
-  <connection>
-   <sender>backwards</sender>
-   <signal>toggled(bool)</signal>
-   <receiver>ShiftTimesDialog</receiver>
-   <slot>changeTime()</slot>
-  </connection>
  </connections>
 </ui>

desktop-widgets/simplewidgets.cpp

@@ -45,9 +45,9 @@ RenumberDialog::RenumberDialog(bool selectedOnlyIn, QWidget *parent) : QDialog(p
 {
 	ui.setupUi(this);
 	connect(ui.buttonBox, SIGNAL(clicked(QAbstractButton *)), this, SLOT(buttonClicked(QAbstractButton *)));
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, SIGNAL(activated()), this, SLOT(close()));
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), parent, SLOT(close()));
 
 	if (selectedOnly && amount_selected == 1)
@@ -72,9 +72,9 @@ SetpointDialog::SetpointDialog(struct dive *dIn, int dcNrIn, int seconds) : QDia
 {
 	ui.setupUi(this);
 	connect(ui.buttonBox, &QDialogButtonBox::clicked, this, &SetpointDialog::buttonClicked);
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, &QShortcut::activated, this, &QDialog::close);
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, &QShortcut::activated, MainWindow::instance(), &QWidget::close);
 }
 
@@ -116,9 +116,9 @@ ShiftTimesDialog::ShiftTimesDialog(QWidget *parent) : QDialog(parent),
 	connect(ui.buttonBox, SIGNAL(clicked(QAbstractButton *)), this, SLOT(buttonClicked(QAbstractButton *)));
 	connect(ui.timeEdit, SIGNAL(timeChanged(const QTime)), this, SLOT(changeTime()));
 	connect(ui.backwards, SIGNAL(toggled(bool)), this, SLOT(changeTime()));
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, SIGNAL(activated()), this, SLOT(close()));
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), parent, SLOT(close()));
 }
 
@@ -144,7 +144,7 @@ void ShiftImageTimesDialog::syncCameraClicked()
 	ui.DCImage->setScene(scene);
 
 	dcImageEpoch = picture_get_timestamp(qPrintable(fileNames.at(0)));
-	QDateTime dcDateTime = QDateTime::fromTime_t(dcImageEpoch, Qt::UTC);
+	QDateTime dcDateTime = QDateTime::fromSecsSinceEpoch(dcImageEpoch, Qt::UTC);
 	ui.dcTime->setDateTime(dcDateTime);
 	connect(ui.dcTime, SIGNAL(dateTimeChanged(const QDateTime &)), this, SLOT(dcDateTimeChanged(const QDateTime &)));
 }
@@ -213,8 +213,8 @@ void ShiftImageTimesDialog::updateInvalid()
 	bool allValid = true;
 	ui.warningLabel->hide();
 	ui.invalidFilesText->hide();
-	QDateTime time_first = QDateTime::fromTime_t(first_selected_dive()->when, Qt::UTC);
-	QDateTime time_last = QDateTime::fromTime_t(last_selected_dive()->when, Qt::UTC);
+	QDateTime time_first = QDateTime::fromSecsSinceEpoch(first_selected_dive()->when, Qt::UTC);
+	QDateTime time_last = QDateTime::fromSecsSinceEpoch(last_selected_dive()->when, Qt::UTC);
 	if (first_selected_dive() == last_selected_dive()) {
 		ui.invalidFilesText->setPlainText(tr("Selected dive date/time") + ": " + time_first.toString());
 	} else {
@@ -229,7 +229,7 @@ void ShiftImageTimesDialog::updateInvalid()
 			continue;
 
 		// We've found an invalid image
-		time_first.setTime_t(timestamps[i] + m_amount);
+		time_first.setSecsSinceEpoch(timestamps[i] + m_amount);
 		if (timestamps[i] == 0)
 			ui.invalidFilesText->append(fileNames[i] + " - " + tr("No Exif date/time found"));
 		else
@@ -271,9 +271,9 @@ void ShiftImageTimesDialog::backwardsChanged(bool)
 URLDialog::URLDialog(QWidget *parent) : QDialog(parent)
 {
 	ui.setupUi(this);
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, SIGNAL(activated()), this, SLOT(close()));
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), parent, SLOT(close()));
 }
 
@@ -317,9 +317,9 @@ DiveComponentSelection::DiveComponentSelection(QWidget *parent, struct dive *tar
 	UI_FROM_COMPONENT(number);
 	UI_FROM_COMPONENT(when);
 	connect(ui.buttonBox, SIGNAL(clicked(QAbstractButton *)), this, SLOT(buttonClicked(QAbstractButton *)));
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, SIGNAL(activated()), this, SLOT(close()));
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), parent, SLOT(close()));
 }
 

desktop-widgets/subsurfacewebservices.cpp

@@ -157,7 +157,7 @@ static DiveListResult parseDiveLogsDeDiveList(const QByteArray &xmlData)
 	DiveListResult result;
 	result.idCount = 0;
 
-	if (reader.readNextStartElement() && reader.name() != "DiveDateReader") {
+	if (reader.readNextStartElement() && nameCmp(reader, "DiveDateReader") != 0) {
 		result.errorCondition = invalidXmlError;
 		result.errorDetails =
 			gettextFromC::tr("Expected XML tag 'DiveDateReader', got instead '%1")
@@ -166,8 +166,8 @@ static DiveListResult parseDiveLogsDeDiveList(const QByteArray &xmlData)
 	}
 
 	while (reader.readNextStartElement()) {
-		if (reader.name() != "DiveDates") {
-			if (reader.name() == "Login") {
+		if (nameCmp(reader, "DiveDates") != 0) {
+			if (nameCmp(reader, "Login") == 0) {
 				QString status = reader.readElementText();
 				// qDebug() << "Login status:" << status;
 
@@ -185,11 +185,11 @@ static DiveListResult parseDiveLogsDeDiveList(const QByteArray &xmlData)
 		// process <DiveDates>
 		seenDiveDates = true;
 		while (reader.readNextStartElement()) {
-			if (reader.name() != "date") {
+			if (nameCmp(reader, "date") != 0) {
 				// qDebug() << "Skipping" << reader.name();
 				continue;
 			}
-			QStringRef id = reader.attributes().value("divelogsId");
+			auto id = reader.attributes().value("divelogsId");
 			// qDebug() << "Found" << reader.name() << "with id =" << id;
 			if (!id.isEmpty()) {
 				result.idList += id.toLatin1();
@@ -259,9 +259,9 @@ DivelogsDeWebServices::DivelogsDeWebServices(QWidget *parent) : WebServices(pare
 	ui.password->setText(qPrefCloudStorage::divelogde_pass());
 	ui.saveUidLocal->hide();
 	hideUpload();
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, SIGNAL(activated()), this, SLOT(close()));
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, SIGNAL(activated()), parent, SLOT(close()));
 }
 

desktop-widgets/tab-widgets/maintab.cpp

@@ -89,8 +89,10 @@ MainTab::MainTab(QWidget *parent) : QTabWidget(parent),
 	connect(&diveListNotifier, &DiveListNotifier::settingsChanged, this, &MainTab::updateDiveInfo);
 
 	connect(ui.editDiveSiteButton, &QToolButton::clicked, MainWindow::instance(), &MainWindow::startDiveSiteEdit);
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	connect(ui.location, &DiveLocationLineEdit::entered, MapWidget::instance(), &MapWidget::centerOnIndex);
 	connect(ui.location, &DiveLocationLineEdit::currentChanged, MapWidget::instance(), &MapWidget::centerOnIndex);
+#endif
 	connect(ui.location, &DiveLocationLineEdit::editingFinished, this, &MainTab::on_location_diveSiteSelected);
 
 	// One might think that we could listen to the precise property-changed signals of the preferences system.

desktop-widgets/tagwidget.cpp

@@ -11,7 +11,11 @@ TagWidget::TagWidget(QWidget *parent) : GroupedLineEdit(parent), m_completer(NUL
 	connect(this, SIGNAL(textChanged()), this, SLOT(reparse()));
 
 	QColor textColor = palette().color(QPalette::Text);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+	float h, s, l, a;
+#else
 	qreal h, s, l, a;
+#endif
 	textColor.getHslF(&h, &s, &l, &a);
 	// I use dark themes
 	if (l <= 0.3) { // very dark text. get a brigth background

desktop-widgets/tripselectiondialog.cpp

@@ -10,9 +10,9 @@ TripSelectionDialog::TripSelectionDialog(QWidget *parent) : QDialog(parent)
 	ui.setupUi(this);
 	connect(ui.trips, &QListWidget::itemSelectionChanged, this, &TripSelectionDialog::selectionChanged);
 
-	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
+	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_W), this);
 	connect(close, &QShortcut::activated, this, &QDialog::close);
-	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
+	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
 	connect(quit, &QShortcut::activated, parent, &QWidget::close);
 
 	// We could use a model, but it seems barely worth the hassle.

packaging/android/variables.sh

@@ -11,4 +11,4 @@ ANDROID_PLATFORMS=android-29
 ANDROID_NDK=ndk/${NDK_VERSION}
 # OpenSSL also has an entry in get-dep-lib.sh line 103
 # that needs to be updated as well.
-OPENSSL_VERSION=1.1.1h
+OPENSSL_VERSION=1.1.1m

packaging/macosx/Info.plist.in

@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>NSPrincipalClass</key>
-	<string>NSApplication</string>
-	<key>CFBundleIconFile</key>
-	<string>Subsurface.icns</string>
-	<key>CFBundleName</key>
-	<string>Subsurface</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleExecutable</key>
-	<string>subsurface</string>
-	<key>CFBundleIdentifier</key>
-	<string>org.hohndel.subsurface</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleVersion</key>
-	<string>@SHORT_VERSION@</string>
-	<key>NSSupportsAutomaticGraphicsSwitching</key><true/>
-</dict>
-</plist>

profile-widget/divepercentageitem.cpp

@@ -6,8 +6,8 @@
 
 #include <array>
 
-DivePercentageItem::DivePercentageItem(const DiveCartesianAxis &hAxis, const DiveCartesianAxis &vAxis, double dpr) :
-	hAxis(hAxis), vAxis(vAxis), dpr(dpr)
+DivePercentageItem::DivePercentageItem(const DiveCartesianAxis &hAxis, const DiveCartesianAxis &vAxis) :
+	hAxis(hAxis), vAxis(vAxis)
 {
 }
 

profile-widget/divepercentageitem.h

@@ -10,12 +10,11 @@ class DiveCartesianAxis;
 
 class DivePercentageItem : public QGraphicsPixmapItem {
 public:
-	DivePercentageItem(const DiveCartesianAxis &hAxis, const DiveCartesianAxis &vAxis, double dpr);
+	DivePercentageItem(const DiveCartesianAxis &hAxis, const DiveCartesianAxis &vAxis);
 	void replot(const dive *d, const divecomputer *dc, const plot_info &pi);
 private:
 	const DiveCartesianAxis &hAxis;
 	const DiveCartesianAxis &vAxis;
-	double dpr;
 };
 
 #endif

profile-widget/profilescene.cpp

@@ -144,7 +144,7 @@ ProfileScene::ProfileScene(double dpr, bool printMode, bool isGrayscale) :
 	heartBeatItem(createItem<DiveHeartrateItem>(*heartBeatAxis,
 						    [](const plot_data &item) { return (double)item.heartbeat; },
 						    1, dpr)),
-	percentageItem(new DivePercentageItem(*timeAxis, *percentageAxis, dpr)),
+	percentageItem(new DivePercentageItem(*timeAxis, *percentageAxis)),
 	tankItem(new TankItem(*timeAxis, dpr)),
 	pixmaps(getDivePixmaps(dpr))
 {

qt-models/CMakeLists.txt

@@ -21,8 +21,6 @@ set(SUBSURFACE_GENERIC_MODELS_LIB_SRCS
 	filterconstraintmodel.h
 	filterpresetmodel.cpp
 	filterpresetmodel.h
-	maplocationmodel.cpp
-	maplocationmodel.h
 	models.cpp
 	models.h
 	tankinfomodel.cpp
@@ -31,6 +29,13 @@ set(SUBSURFACE_GENERIC_MODELS_LIB_SRCS
 	weightsysteminfomodel.h
 )
 
+if(NOT USINGQT6)
+	LIST(APPEND SUBSURFACE_GENERIC_MODELS_LIB_SRCS
+		maplocationmodel.cpp
+		maplocationmodel.h
+	)
+endif()
+
 # models exclusively used in desktop builds
 set(SUBSURFACE_DESKTOP_MODELS_LIB_SRCS
 	divecomputerextradatamodel.cpp

qt-models/diveplannermodel.cpp

@@ -1086,7 +1086,11 @@ void DivePlannerPointsModel::updateDiveProfile()
 		// Since we're calling computeVariations asynchronously and plan_deco_state is allocated
 		// on the stack, it must be copied and freed by the worker-thread.
 		struct deco_state *plan_deco_state_copy = new deco_state(plan_deco_state);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+		QtConcurrent::run(&DivePlannerPointsModel::computeVariationsFreeDeco, this, plan_copy, plan_deco_state_copy);
+#else
 		QtConcurrent::run(this, &DivePlannerPointsModel::computeVariationsFreeDeco, plan_copy, plan_deco_state_copy);
+#endif
 #else
 		computeVariations(plan_copy, &plan_deco_state);
 #endif

scripts/build.sh

@@ -224,9 +224,13 @@ if [ -n "$CMAKE_PREFIX_PATH" ] ; then
 else
 	hash qmake > /dev/null 2> /dev/null && QMAKE=qmake
 	[ -z $QMAKE ] && hash qmake-qt5 > /dev/null 2> /dev/null && QMAKE=qmake-qt5
-	[ -z $QMAKE ] && echo "cannot find qmake or qmake-qt5" && exit 1
+	[ -z $QMAKE ] && hash qmake-qt6 > /dev/null 2> /dev/null && QMAKE=qmake-qt6
+	[ -z $QMAKE ] && echo "cannot find qmake, qmake-qt5, or qmake-qt6" && exit 1
 fi
 
+# grab the Qt version
+QT_VERSION=$($QMAKE -query QT_VERSION)
+
 # it's not entirely clear why we only set this on macOS, but this appears to be what works
 if [ "$PLATFORM" = Darwin ] ; then
 	if [ -z "$CMAKE_PREFIX_PATH" ] ; then
@@ -244,9 +248,8 @@ fi
 
 # on Debian and Ubuntu based systems, the private QtLocation and
 # QtPositioning headers aren't bundled. Download them if necessary.
-if [ "$PLATFORM" = Linux ] ; then
+if [ "$PLATFORM" = Linux ] && [[ $QT_VERSION == 5* ]] ; then
 	QT_HEADERS_PATH=$($QMAKE -query QT_INSTALL_HEADERS)
-	QT_VERSION=$($QMAKE -query QT_VERSION)
 
 	if [ ! -d "$QT_HEADERS_PATH/QtLocation/$QT_VERSION/QtLocation/private" ] &&
            [ ! -d "$INSTALL_ROOT"/include/QtLocation/private ] ; then
@@ -348,7 +351,8 @@ if [[ $PLATFORM = Darwin && "$BUILD_DEPS" == "1" ]] ; then
 	pushd openssl
 	mkdir -p build
 	cd build
-	../Configure --prefix="$INSTALL_ROOT" --openssldir="$INSTALL_ROOT" "$OLDER_MAC" darwin64-x86_64-cc
+	if [ $(arch) == "arm64" ] ; then OS_ARCH=darwin64-arm64-cc ; else OS_ARCH=darwin64-x86_64-cc; fi
+	../Configure --prefix="$INSTALL_ROOT" --openssldir="$INSTALL_ROOT" "$OLDER_MAC" $OS_ARCH
 	make depend
 	# all the tests fail because the assume that openssl is already installed. Odd? Still thinks work
 	make -j4 -k
@@ -436,6 +440,7 @@ if [[ $PLATFORM = Darwin && "$BUILD_DEPS" == "1" ]] ; then
 
 	./${SRC_DIR}/scripts/get-dep-lib.sh single . libmtp
 	pushd libmtp
+	patch -p1 < ../${SRC_DIR}/scripts/libmtp.patch
 	echo 'N' | NOCONFIGURE="1" bash ./autogen.sh
 	mkdir -p build
 	cd build
@@ -504,7 +509,7 @@ STATIC_LIBDC="$INSTALL_ROOT/$(grep ^libdir Makefile | cut -d/ -f2)/libdivecomput
 
 cd "$SRC"
 
-if [ "$QUICK" != "1" ] && [ "$BUILD_DESKTOP$BUILD_MOBILE" != "" ] ; then
+if [ "$QUICK" != "1" ] && [ "$BUILD_DESKTOP$BUILD_MOBILE" != "" ] && [[ $QT_VERSION == 5* ]] ; then
 	# build the googlemaps map plugin
 
 	cd "$SRC"

scripts/get-dep-lib.sh

@@ -6,8 +6,8 @@ CURRENT_LIBZ="v1.2.11"
 CURRENT_LIBZIP="rel-1-5-1"
 CURRENT_LIBGIT2="v1.0.1"
 CURRENT_LIBCURL="curl-7_54_1"
-CURRENT_LIBUSB="v1.0.21"
-CURRENT_OPENSSL="OpenSSL_1_1_1h"
+CURRENT_LIBUSB="v1.0.25"
+CURRENT_OPENSSL="OpenSSL_1_1_1m"
 CURRENT_LIBSSH2="libssh2-1.8.0"
 CURRENT_XSLT="v1.1.34"
 CURRENT_SQLITE="3190200"
@@ -103,7 +103,7 @@ fi
 
 # FIX FOR ANDROID,
 if [ "$PLATFORM" == "singleAndroid" ] ; then
-	CURRENT_OPENSSL="OpenSSL_1_1_1h"
+	CURRENT_OPENSSL="OpenSSL_1_1_1m"
 # If changing the openSSL version here, make sure to change it in packaging/android/variables.sh also.
 fi
 # no curl and old libs (never version breaks)

scripts/libmtp.patch

@@ -0,0 +1,13 @@
+diff --git a/libmtp.pc.in b/libmtp.pc.in
+index 93c7bbf..ff817e1 100644
+--- a/libmtp.pc.in
++++ b/libmtp.pc.in
+@@ -10,6 +10,6 @@ Description: libmtp is a library for accessing Media Transfer Protocol devices
+ Version: @VERSION@
+ Requires.private: @LIBUSB_REQUIRES@
+ Conflicts:
+-Libs: -L${libdir} -lmtp
++Libs: -L${libdir} -lmtp @OSFLAGS@
+ Libs.private: @LIBS@
+-Cflags: -I${includedir} @OSFLAGS@
++Cflags: -I${includedir}

stats/statshelper.h

@@ -8,8 +8,7 @@
 #include <vector>
 #include <QPointF>
 #include <QSGNode>
-
-struct dive;
+#include "core/dive.h"
 
 // Round positions to integer values to avoid ugly artifacts
 QPointF roundPos(const QPointF &p);

stats/statsvariables.cpp

@@ -113,7 +113,7 @@ template<> int invalid_value<int>()
 }
 template<> double invalid_value<double>()
 {
-	return std::numeric_limits<double>::quiet_NaN();
+	return NaN;
 }
 template<> QString invalid_value<QString>()
 {
@@ -121,7 +121,6 @@ template<> QString invalid_value<QString>()
 }
 template<> StatsQuartiles invalid_value<StatsQuartiles>()
 {
-	double NaN = std::numeric_limits<double>::quiet_NaN();
 	return { std::vector<dive *>(), NaN, NaN, NaN, NaN, NaN };
 }
 

stats/statsview.cpp

@@ -309,14 +309,22 @@ QRectF StatsView::plotArea() const
 	return plotRect;
 }
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+void StatsView::geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry)
+#else
 void StatsView::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
+#endif
 {
 	plotRect = QRectF(QPointF(0.0, 0.0), newGeometry.size());
 	backgroundDirty = true;
 	plotAreaChanged(plotRect.size());
 
 	// Do we need to call the base-class' version of geometryChanged? Probably for QML?
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+	QQuickItem::geometryChange(newGeometry, oldGeometry);
+#else
 	QQuickItem::geometryChanged(newGeometry, oldGeometry);
+#endif
 }
 
 void StatsView::plotAreaChanged(const QSizeF &s)

stats/statsview.h

@@ -77,7 +77,11 @@ private:
 	QRectF plotRect;
 	QSGNode *updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *updatePaintNodeData) override;
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+	void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override;
+#else
 	void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) override;
+#endif
 	void plotAreaChanged(const QSizeF &size);
 	void reset(); // clears all series and axes
 	void setAxes(StatsAxis *x, StatsAxis *y);

subsurface-desktop-main.cpp

@@ -204,7 +204,7 @@ exit:
 	surface.destroy();
 	if (glError) {
 		qWarning() << QStringLiteral(VALIDATE_GL_PREFIX "WARNING: %1. Using a software renderer!").arg(glError);
-		QQuickWindow::setSceneGraphBackend(QSGRendererInterface::Software);
+		QQuickWindow::setSceneGraphBackend("software");
 	}
 }
 

subsurface-helper.cpp

@@ -2,8 +2,11 @@
 #include <QQmlEngine>
 #include <QQuickItem>
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include "map-widget/qmlmapwidgethelper.h"
 #include "qt-models/maplocationmodel.h"
+#endif
+
 #include "stats/statsview.h"
 #include "core/qt-gui.h"
 #include "core/settings/qPref.h"
@@ -222,7 +225,9 @@ static void register_qml_types(QQmlEngine *engine)
 	register_qml_type<ChartListModel>("ChartListModel");
 #endif // not SUBSURFACE_MOBILE
 
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 	register_qml_type<MapWidgetHelper>("MapWidgetHelper");
 	register_qml_type<MapLocationModel>("MapLocationModel");
+#endif
 	register_qml_type<StatsView>("StatsView");
 }

tests/CMakeLists.txt

@@ -1,5 +1,9 @@
 # QTest based tests
-qt5_add_resources(SUBSURFACE_TEST_RESOURCES ../subsurface.qrc)
+if(NOT USINGQT6)
+	qt5_add_resources(SUBSURFACE_TEST_RESOURCES ../subsurface.qrc)
+else()
+	qt_add_resources(SUBSURFACE_TEST_RESOURCES ../subsurface.qrc)
+endif()
 
 # Access test data (dive folder) from SUBSURFACE_SOURCE by default.
 # In cross compilation cases or when test will not be executed at build time

tests/testparseperformance.cpp

@@ -10,6 +10,7 @@
 #include <QFile>
 #include <QDebug>
 #include <QNetworkProxy>
+#include "QTextCodec"
 
 #define LARGE_TEST_REPO "https://github.com/Subsurface/large-anonymous-sample-data"
 

tests/testprofile.cpp

@@ -6,6 +6,7 @@
 #include "core/file.h"
 #include "core/save-profiledata.h"
 #include "core/pref.h"
+#include "QTextCodec"
 
 // This test compares the content of struct profile against a known reference version for a list
 // of dives to prevent accidental regressions. Thus is you change anything in the profile this
@@ -18,7 +19,6 @@ void TestProfile::init()
 {
 	// Set UTF8 text codec as in real applications
 	QTextCodec::setCodecForLocale(QTextCodec::codecForMib(106));
-
 	// first, setup the preferences
 
 	// normally we should be able to do this - but it makes this test fail because the reference data

translations/CMakeLists.txt

@@ -53,8 +53,12 @@ set(US_EN_PLURALS subsurface_en_US.ts)
 #	subsurface_vi.ts
 #	subsurface_zh_CN.ts
 
+if(NOT USINGQT6)
+	qt5_add_translation(TRANSLATIONS ${TRANSLATION_FILES} ${US_EN_PLURALS})
+else()
+	qt_add_translation(TRANSLATIONS ${TRANSLATION_FILES} ${US_EN_PLURALS})
+endif()
 
-qt5_add_translation(TRANSLATIONS ${TRANSLATION_FILES} ${US_EN_PLURALS})
 set(TRANSLATIONS ${TRANSLATIONS} PARENT_SCOPE)
 add_custom_target (translations ALL DEPENDS ${TRANSLATIONS})