qt-gui problems with GNU 3.8

I am trying to build gnuradio branch maint-3.8 and I am having trouble getting qt-gui to enabled. I am currently using the new distro CentOS 8, and I cannot find any 'qwt' packages. Has anyone got gnuradio to build on CentOS 8 yet? I am very close to having all the modules I desire to be built and enabled.

Any help would be greatly appreciated.

Mark

Here is the cmake error output for qt-gui.

-- Python checking for PyQt5 - found
-- Checking for module 'Qt5Qwt6'
-- Package 'Qt5Qwt6', required by 'virtual:world', not found
--
-- Configuring gr-qtgui support...
-- Dependency Boost_FOUND = 1
-- Dependency QT_FOUND = 1
-- Dependency QWT_FOUND = FALSE
-- Dependency ENABLE_VOLK = TRUE
-- Dependency ENABLE_GNURADIO_RUNTIME = ON
-- Dependency ENABLE_GR_FFT = ON
-- Dependency ENABLE_GR_FILTER = ON
-- Dependency PYTHONLIBS_FOUND = TRUE
-- Dependency PYQT5_FOUND = TRUE
-- Disabling gr-qtgui support.
-- Override with -DENABLE_GR_QTGUI=ON/OFF

Here are my final modules enabled ad disabled.

-- # Gnuradio enabled components
-- ######################################################
-- * python-support
-- * testing-support
-- * doxygen
-- * gnuradio-runtime
-- * gr-ctrlport
-- * * thrift
-- * gnuradio-companion
-- * gr-blocks
-- * gr-fec
-- * gr-fft
-- * gr-filter
-- * gr-analog
-- * gr-digital
-- * gr-dtv
-- * gr-audio
-- * * oss
-- * gr-channels
-- * gr-trellis
-- * gr-uhd
-- * gr-utils
-- * gr_modtool
-- * gr-vocoder
-- * gr-wavelet
--
-- ######################################################
-- # Gnuradio disabled components
-- ######################################################
-- * sphinx
-- * gr-qtgui
-- * gr-video-sdl
-- * gr-zeromq
--