GRASS (Geographic Resources Analysis Support System) is a free
Geographic Information System (GIS) used for geospatial data
management and analysis, image processing, graphics/maps production,
spatial modeling, and visualization.  GRASS is an official project of
the Open Source Geospatial Foundation.

This build aims to provide the most featureful result possible. To
obviate multiple databases, the following are omitted in favour of
sqlite.
  mariadb        for mariadb (or mysql) database support
  postgresql     for postgresql database support (requires postgresql)
  unixODBC       for ODBC support (requires unixODBC)

If one of these is required for some reason, try manipulating the
options for the configure comand in the .SlackBuild file.

If you need to make grass libraries available to other applications
(e.g. qgis) do this:

  echo /opt/grass/lib >> /etc/ld.so.conf && ldconfig