[Swan-dev] missing make dependencies

[Paul Wouters]

On Mon, 15 Aug 2016, Andrew Cagney wrote:

> While having version.c re-generated because there is a new git commit
> is nice, I've yet to find anything that implements this efficiently -
> i.e., without having to assume and run git on every make invocation.

Note that this used to be my biggest slowdown on a VM, since it would
mean reading it ALL of the git repo via the 9p filesystem. On older
COW images, that would take more then 30 seconds.

Paul