Use versionless Qt cmake target

This makes it easier to build against both Qt5 and Qt6

GIT_SILENT

console/CMakeLists.txt

 add_executable(kscreen-console main.cpp console.cpp)
 
 target_link_libraries(kscreen-console
-            Qt5::DBus
-            Qt5::Gui
+            Qt::DBus
+            Qt::Gui
             KF5::CoreAddons
             KF5::I18n
             KF5::Screen)

kcm/CMakeLists.txt

@@ -24,7 +24,7 @@ ecm_qt_declare_logging_category(kcm_kscreen_SRCS
 add_library(kcm_kscreen MODULE ${kcm_kscreen_SRCS})
 
 target_link_libraries(kcm_kscreen
-    Qt5::Sensors
+    Qt::Sensors
     KF5::ConfigCore
     KF5::CoreAddons
     KF5::Declarative

kded/CMakeLists.txt

@@ -30,10 +30,10 @@ qt5_add_dbus_adaptor(kscreen_daemon_SRCS
 
 add_library(kscreen MODULE ${kscreen_daemon_SRCS})
 
-target_link_libraries(kscreen Qt5::Widgets
-                              Qt5::DBus
-                              Qt5::Quick
-                              Qt5::Sensors
+target_link_libraries(kscreen Qt::Widgets
+                              Qt::DBus
+                              Qt::Quick
+                              Qt::Sensors
                               KF5::Declarative
                               KF5::Screen
                               KF5::DBusAddons

plasmoid/CMakeLists.txt

@@ -10,8 +10,8 @@ add_library(plasma_applet_kscreen MODULE ${kscreenapplet_SRCS})
 kcoreaddons_desktop_to_json(plasma_applet_kscreen package/metadata.desktop)
 
 target_link_libraries(plasma_applet_kscreen
-                      Qt5::Qml
-                      Qt5::DBus
+                      Qt::Qml
+                      Qt::DBus
                       KF5::I18n
                       KF5::Plasma
                       KF5::Screen)

tests/kded/CMakeLists.txt

@@ -23,7 +23,7 @@ macro(ADD_KDED_TEST testname)
     add_executable(${testname} ${test_SRCS})
     add_dependencies(${testname} kscreen) # make sure the dbus interfaces are generated
     target_compile_definitions(${testname} PRIVATE "-DTEST_DATA=\"${CMAKE_CURRENT_SOURCE_DIR}/\"")
-    target_link_libraries(${testname} Qt5::Test Qt5::DBus Qt5::Gui Qt5::Sensors KF5::Screen KF5::CoreAddons)
+    target_link_libraries(${testname} Qt::Test Qt::DBus Qt::Gui Qt::Sensors KF5::Screen KF5::CoreAddons)
     add_test(NAME kscreen-kded-${testname} COMMAND ${testname})
     ecm_mark_as_test(${testname})
 endmacro()

tests/osd/CMakeLists.txt

@@ -10,10 +10,10 @@ add_executable(osdtest main.cpp
                        ../../common/utils.cpp
 )
 
-target_link_libraries(osdtest Qt5::Core
-                              Qt5::DBus
-                              Qt5::Quick
-                              Qt5::Qml
+target_link_libraries(osdtest Qt::Core
+                              Qt::DBus
+                              Qt::Quick
+                              Qt::Qml
                               KF5::Screen
                               KF5::I18n
                               KF5::Declarative