increase cmake version

CMakeLists.txt

-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.0)
+set(PIM_VERSION "5.4.40")
 
-project(KAlarmCal)
+project(KAlarmCal VERSION ${PIM_VERSION})
 
 # ECM setup
 set(KF5_VERSION "5.28.0")
@@ -20,7 +21,6 @@ include(ECMQtDeclareLoggingCategory)
 include(ECMCoverageOption)
 
 
-set(PIM_VERSION "5.4.40")
 
 set(KALARM_LIB_VERSION ${PIM_VERSION})
 
@@ -28,7 +28,7 @@ set(CALENDARCORE_LIB_VERSION "5.4.40")
 set(HOLIDAY_LIB_VERSION "5.4.40")
 set(IDENTITYMANAGER_LIB_VERSION "5.4.40")
 set(AKONADI_LIB_VERSION "5.4.40")
-ecm_setup_version(${KALARM_LIB_VERSION} VARIABLE_PREFIX KALARMCAL
+ecm_setup_version(PROJECT VARIABLE_PREFIX KALARMCAL
                         VERSION_HEADER "${CMAKE_CURRENT_BINARY_DIR}/kalarmcal_version.h"
                         PACKAGE_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/KF5AlarmCalendarConfigVersion.cmake"
                         SOVERSION 5