bug#17300: fails to build due to defsetf, cl-define-compiler-macro in cl-macs.el (structures)

[Eli Zaretskii]

> From: Ivan Shmakov <ivan@siamics.net>
> Date: Sun, 20 Apr 2014 16:37:26 +0000
> 
>       As an aside, I’d gladly be performing all my builds in a clean
>       build directory, provided that the build system employed by
>       Emacs would /not/ insist on cluttering $(srcdir).  (As in: with
>       .elc.)

I, on the contrary, find a clean build to be a waste of time, and try
to avoid it as much as possible.  There's nothing "unclean" about
compiling just the files that were changed since the last update.