Adapt build system for building against qt6

CMakeLists.txt

@@ -57,7 +57,7 @@ set(PIMCOMMON_LIB_VERSION "5.19.40")
 option(KDEPIM_KUSERFEEDBACK "Enable user feedback support (experimental)" FALSE)
 
 
-find_package(Qt5 ${QT_REQUIRED_VERSION} CONFIG REQUIRED Widgets Test WebEngine WebEngineWidgets PrintSupport)
+find_package(Qt${QT_MAJOR_VERSION} ${QT_REQUIRED_VERSION} CONFIG REQUIRED Widgets Test WebEngine WebEngineWidgets PrintSupport)
 find_package(Grantlee5 "5.2" CONFIG REQUIRED)
 
 # Find KF5 package

interfaces/CMakeLists.txt

@@ -29,7 +29,7 @@ endif()
 
 target_link_libraries(akregatorinterfaces
     KF5::ConfigGui
-    Qt::Widgets
+    Qt${QT_MAJOR_VERSION}::Widgets
     )
 if (COMPILE_WITH_UNITY_CMAKE_SUPPORT)
     set_target_properties(akregatorinterfaces PROPERTIES UNITY_BUILD ON)

src/CMakeLists.txt

@@ -166,7 +166,7 @@ target_link_libraries(akregatorprivate
     Grantlee5::Templates
     KF5::KIOGui
     KF5::MessageViewer
-    Qt::PrintSupport
+    Qt${QT_MAJOR_VERSION}::PrintSupport
     KF5::WebEngineViewer
     ${akregator_userfeedback_LIB}
     )
@@ -285,7 +285,7 @@ target_link_libraries(akregatorpart
     KF5::Parts
     KF5::Notifications
     KF5::TextWidgets
-    Qt::WebEngineWidgets
+    Qt${QT_MAJOR_VERSION}::WebEngineWidgets
     KF5::WebEngineViewer
     KF5::KIOGui
     )

src/job/autotests/CMakeLists.txt

@@ -5,7 +5,7 @@ macro(akregator_job_unittest _source)
     ecm_add_test(${_source}
         TEST_NAME ${_name}
         NAME_PREFIX "akregator-job"
-        LINK_LIBRARIES Qt::Test akregatorprivate
+        LINK_LIBRARIES Qt${QT_MAJOR_VERSION}::Test akregatorprivate
     )
 endmacro ()