I was trying to include the Gtags layer to make use of it in my spacemacs setup like I learned to do with vim+ctags in a given project.
Followed the instructions from: https://www.spacemacs.org/layers/+tags/gtags/README.html and included the layer in my ~/.spacemacs 'dotspacemacs-configuration-layers'. But even after restarting it I could not find the 'SPC m' key bindings to use its features.
I also tried setting (gtags :variables gtags-enable-by-default t) to have it enabled by default but apparently it did not work as well.
How do I get access to those 'SPC m' key bindings?
Did not find a way to solve my gtags issue, but found another solution using etags-select. As long as I do generate my TAGS file using the "-e" flag to be Emacs compatible, then I can navigate using tags.
It solved the my issue :)