speedy recompiles

[Chris Jones]

> ccache?  Its usefullness is somewhere near the top of the list, right below 
> bottled beer and sliced bread.  It cuts out 50 to 95% of the time to do a 
> repeat compile, costs you maybe 5% longer on the first use.  Indispensable 
> IMO.  Don't do another make without it.

You are not wrong. Quickly this utility has been added to the top of my
my "wish I knew about it years ago" list..

Chris