CMake build: Remove usages of Qt5_VERSION

and remove checks for Qt < 6.2, since that is our minimum version.
Except for sdktool and qml2puppet.

Change-Id: Id36cd1a15a5a6e5480e4ae5d0a8ffaea4b2a1864
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/app/CMakeLists.txt

@@ -66,7 +66,7 @@ if (QTC_STATIC_BUILD)
     SOURCES "${CMAKE_CURRENT_BINARY_DIR}/plugin_imports.cpp"
   )
 
-  if (Qt5_VERSION VERSION_GREATER_EQUAL 6.0.0 AND TARGET QmlDesigner)
+  if (TARGET QmlDesigner)
     qt6_import_qml_plugins(qtcreator
       PATH_TO_SCAN "${CMAKE_CURRENT_SOURCE_DIR}/../../share/qtcreator/qmldesigner")
   endif()

src/libs/CMakeLists.txt

@@ -34,7 +34,7 @@ if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/qlitehtml/src/CMakeLists.txt)
       set(QLITEHTML_BIN_PATH ${IDE_BIN_PATH})
       set(QLITEHTML_LIBRARY_PATH ${IDE_LIBRARY_PATH})
     endif()
-    set(QT_VERSION_MAJOR ${Qt5_VERSION_MAJOR})
+    set(QT_VERSION_MAJOR ${Qt6_VERSION_MAJOR})
     option(BUILD_TESTING "Build litehtml tests" OFF) # otherwise litehtml downloads googletest
     add_subdirectory(qlitehtml/src)
   endif()

src/libs/sqlite/CMakeLists.txt

@@ -1,6 +1,5 @@
 add_qtc_library(SqliteC OBJECT
     PROPERTIES AUTOMOC OFF AUTOUIC OFF QT_COMPILE_OPTIONS_DISABLE_WARNINGS ON POSITION_INDEPENDENT_CODE ON
-    CONDITION Qt5_VERSION VERSION_GREATER_EQUAL 6.2.0
     DEFINES SQLITE_CORE SQLITE_CUSTOM_INCLUDE=config.h $<$<CONFIG:Debug>:SQLITE_DEBUG>
     PROPERTIES COMPILE_OPTIONS $<IF:$<CXX_COMPILER_ID:MSVC>,/FIconfig.h,-includeconfig.h>
     PUBLIC_INCLUDES
@@ -18,7 +17,6 @@ add_qtc_library(SqliteC OBJECT
 add_qtc_library(Sqlite
   PROPERTIES AUTOMOC OFF AUTOUIC OFF
   DEPENDS Qt::Core Threads::Threads ${CMAKE_DL_LIBS} SqliteC
-  CONDITION Qt5_VERSION VERSION_GREATER_EQUAL 6.2.0
   PUBLIC_INCLUDES
     "${CMAKE_CURRENT_LIST_DIR}"
   DEFINES SQLITE_CUSTOM_INCLUDE=config.h $<$<CONFIG:Debug>:SQLITE_REVERSE>

src/plugins/coreplugin/CMakeLists.txt

@@ -207,15 +207,9 @@ if ((NOT WIN32) AND (NOT APPLE))
 endif()
 
 set(FONTS_BASE "${QtCreator_SOURCE_DIR}/src/share/3rdparty/studiofonts/")
-if(${Qt5_VERSION} VERSION_LESS "6")
-extend_qtc_plugin(Core
-  SOURCES "${FONTS_BASE}/studiofonts.qrc"
-)
-else() # < Qt 6
 qt_add_resources(Core
   CoreWelcomeScreenFonts_rcc
   BASE ${FONTS_BASE}
   PREFIX "studiofonts"
   FILES "${FONTS_BASE}/TitilliumWeb-Regular.ttf"
 )
-endif()

src/plugins/qmldesigner/CMakeLists.txt

@@ -1,5 +1,5 @@
 add_qtc_plugin(QmlDesigner
-  CONDITION Qt5_VERSION VERSION_GREATER_EQUAL 6.2.0 AND TARGET Qt::QuickWidgets AND TARGET Qt::Svg
+  CONDITION TARGET Qt::QuickWidgets AND TARGET Qt::Svg
   DEPENDS
     QmlJS LanguageUtils QmlEditorWidgets AdvancedDockingSystem
     Qt::QuickWidgets Qt::CorePrivate Sqlite Qt::Xml Qt::Svg
@@ -498,7 +498,7 @@ function(get_and_add_as_subdirectory name repository git_tag build_dir source_di
 endfunction()
 
 if (WITH_QMLDOM)
-  if (Qt5_VERSION VERSION_LESS 6.3.2)
+  if (Qt6_VERSION VERSION_LESS 6.3.2)
     message(FATAL_ERROR "You need Qt 6.3.2 or newer to enable WITH_QMLDOM feature.")
   endif()
 

src/plugins/qmlpreview/CMakeLists.txt

@@ -23,13 +23,9 @@ extend_qtc_plugin(QmlPreview
     tests/qmlpreviewplugin_test.cpp tests/qmlpreviewplugin_test.h
 )
 
-if(TARGET Qt${QT_VERSION_MAJOR}::QmlPrivate)
-  # check if Qt version have_qml_debug_translation_protocol
-  # will be introduced in Qt 6.2, but there are users
-  # who needs it in older but special built Qt versions aswell
-  string(REGEX MATCH "^[0-9]*" QT_VERSION_MAJOR ${Qt5_VERSION})
+if(TARGET Qt6::QmlPrivate)
   get_target_property(qmldebugprivate_include_directories
-                      Qt${QT_VERSION_MAJOR}::QmlPrivate
+                      Qt6::QmlPrivate
                       INTERFACE_INCLUDE_DIRECTORIES
   )
   find_file(have_qml_debug_translation_protocol