The build process for this year's HWRF implementation is very simple:

  cd sorc
  make
  make install

If either command fails, something went wrong while building.

If you want to delete compiler intermediate files to reduce the size
of the sorc directory:

  make clean

Be warned: if you do that, to recompile most of the components, you
will have to rebuild the libraries (lib/sorc/*), WRF (hwrf_v3.4.0.fd)
and WPS (hwrf_wps.fd).