[mythtv] Decision on FFmpeg repository

[Gary Buhrmaster]

On Fri, May 18, 2018 at 5:58 PM, Peter Bennett <pb.mythtv at gmail.com> wrote:

> These git features are new to me, but as I understand it - If you add a
> submodule to a git repository, it makes one directory a copy of a specific
> commit in another repository. Submodule update will always fetch that
> specific commit. You can change it to another commit and you have to commit
> that change. If somebody has changed the submodule setup to access a
> different commit, somebody else who does a pull does not automatically get
> the updated source for the submodule, they have to do a git submodule
> update, this is why I would put that in the config.

Just so you understand, the github download (at a commit)
does *NOT* generate a git repo (this is not a git clone).
You cannot issue git commands from inside the directory
that is (eventually) created from that download when
running configure.

If the project wishes to no longer support the ability to
download from github in that way to build, and/or to
presume build hosts will have internet connectivity
(to perform other git operations), that is up to the
project, but it will be a change in the existing practice.