The no-dev option is deprecated.  Use -Wno-author instead.
CMake Warning (unused-cli):
  Manually-specified variables were not used by the project:

    CMAKE_LD_FLAGS
    ECM_MKSPECS_INSTALL_DIR


/var/pisi/knotifications-6.31.0-92/work/knotifications-6.31.0/src/notifybyaudio.cpp: In member function ‘void NotifyByAudio::finishNotification(KNotification*, quint32)’:
/var/pisi/knotifications-6.31.0-92/work/knotifications-6.31.0/src/notifybyaudio.cpp:225:55: warning: unused parameter ‘notification’ [-Wunused-parameter]
  225 | void NotifyByAudio::finishNotification(KNotification *notification, quint32 id)
      |                                        ~~~~~~~~~~~~~~~^~~~~~~~~~~~