bug#31417: Compilation failure when source directory is renamed to automake

[Hans-Bernhard Bröker]

Am 11.05.2018 um 17:40 schrieb Charles Gonnaud:
> Hello all,
>
> I encountered some difficulties today when trying to compile automake 
> 1.16.1 from the sources : automake wouldn't compile if the parent 
> directory was named automake.

[...]
> cp -r automake-1.16.1 automake

Ah, but you're not just renaming it: you're copying the whole thing, and 
throwing away the original timestamps in the process!

That's rather a different kettle of fish, because it triggers re-build 
rules that have to run automake itself, trapping you in a chicken-or-egg 
cycle.

I'm relatively sure that an actual rename would have worked better, as 
should an attribute-preserved copy:

        cp -a automake-1.16.1 automake