use qt system paths

CMakeLists.txt

@@ -16,6 +16,8 @@ set(STANDARD_CONFIG_FILE "/etc/fancontrol" CACHE STRING "The location of the sta
 add_definitions(-DSTANDARD_SERVICE_NAME="${STANDARD_SERVICE_NAME}")
 add_definitions(-DSTANDARD_CONFIG_FILE="${STANDARD_CONFIG_FILE}")
 
+set(KDE_INSTALL_USE_QT_SYS_PATHS ON)
+
 
 #KCM can't be build without systemd support
 if(BUILD_KCM AND NO_SYSTEMD)