CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_LD_FLAGS
    ECM_MKSPECS_INSTALL_DIR


/var/pisi/kpipewire-6.4.5-27/work/kpipewire-6.4.5/src/libvpxvp9encoder.cpp: In member function ‘virtual bool LibVpxVp9Encoder::initialize(const QSize&)’:
/var/pisi/kpipewire-6.4.5-27/work/kpipewire-6.4.5/src/libvpxvp9encoder.cpp:56:16: warning: unused variable ‘area’ [-Wunused-variable]
   56 |     const auto area = size.width() * size.height();
      |                ^~~~