CMake: Handle KPMCore version better

- provide complete information for feature_summary
 - set the right API version when building libcalamares
 - report the beta version number when it's wrong

src/libcalamares/CMakeLists.txt

@@ -103,6 +103,9 @@ endif()
 find_package( KPMcore 3.3 )
 set_package_properties(
     KPMcore PROPERTIES
+    URL "https://invent.kde.org/kde/kpmcore"
+    DESCRIPTION "KDE Partitioning library"
+    TYPE RECOMMENDED
     PURPOSE "For partitioning service"
 )
 
@@ -110,8 +113,10 @@ if ( KPMcore_FOUND )
     find_package( Qt5 REQUIRED DBus )  # Needed for KPMCore
     find_package( KF5 REQUIRED I18n WidgetsAddons )  # Needed for KPMCore
 
-    if( KPMcore_VERSION VERSION_GREATER "3.3.70" AND KPMcore_VERSION VERSION_LESS "4.0" )
-        message( FATAL_ERROR "KPMCore beta versions are not supported" )
+    if( KPMcore_VERSION VERSION_GREATER_EQUAL "4.0" )
+        add_definitions( -DWITH_KPMCORE4API ) # kpmcore 4 with new API
+    elseif( KPMcore_VERSION VERSION_GREATER "3.3.70" )
+        message( FATAL_ERROR "KPMCore beta versions ${KPMcore_VERSION} not supported" )
     endif()
 
     include_directories( ${KPMCORE_INCLUDE_DIR} )

src/modules/fsresizer/CMakeLists.txt

@@ -1,4 +1,8 @@
 find_package( KPMcore 3.3 )
+set_package_properties(
+    KPMcore PROPERTIES
+    PURPOSE "For fsresizer module"
+)
 
 set( _partition_defs "" )
 
@@ -11,7 +15,7 @@ if ( KPMcore_FOUND )
     if( KPMcore_VERSION VERSION_GREATER_EQUAL "4.0" )
         list( APPEND _partition_defs WITH_KPMCORE4API ) # kpmcore 4 with new API
     elseif( KPMcore_VERSION VERSION_GREATER "3.3.70" )
-        message( FATAL_ERROR "KPMCore beta versions are not supported" )
+        message( FATAL_ERROR "KPMCore beta versions ${KPMcore_VERSION} are not supported" )
     endif()
 
     # The PartitionIterator is a small class, and it's easiest -- but also a

src/modules/partition/CMakeLists.txt

@@ -18,7 +18,7 @@ find_package(ECM ${ECM_VERSION} REQUIRED NO_MODULE)
 find_package( KPMcore 3.3 )
 set_package_properties(
     KPMcore PROPERTIES
-    PURPOSE "For partitioning module"
+    PURPOSE "For partition module"
 )
 
 if ( KPMcore_FOUND )
@@ -28,7 +28,7 @@ if ( KPMcore_FOUND )
     if( KPMcore_VERSION VERSION_GREATER_EQUAL "4.0" )
         list( APPEND _partition_defs WITH_KPMCORE4API ) # kpmcore 4 with new API
     elseif( KPMcore_VERSION VERSION_GREATER "3.3.70" )
-        message( FATAL_ERROR "KPMCore beta versions are not supported" )
+        message( FATAL_ERROR "KPMCore beta versions ${KPMcore_VERSION} are not supported" )
     endif()
 
     include_directories( ${KPMCORE_INCLUDE_DIR} )