Cloning gnudatalanguage gdl
Do not use the
button of the GitHub repo, your cloning will be incomplete.
Starting from #1484 gdl uses git submodules.
To clone gdl, type: git clone --recursive https://github.com/gnudatalanguage/gdl.git
To update an already existing (cloned) gdl repo, do:
git submodule update --init- or
git pull --recurse-submodules