The main entry point in this directory is:
packaging/make_release.sh: Generates the*.tar.gzand*.zipsource code packages. Refer to comments in packaging/make_release.sh for the full list of tasks done.
The script includes the git submodules that should go into packages, and removes those that are not intended to be shipped within Debian packages but which we keep into the git repo for the convenience of (mainly) Windows users.
Read more here: MRPT release check-list (page source code).
The code actually generating nightly (and stable) PPA releases lives here (browse the different branches).