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

[Stefan Monnier]

> That has become false long ago.  You need to bootstrap in some rare
> cases, but mostly the build "just works".

It does break every once in a while, tho.
For maintainers, it's usually easy to figure out the problem and run
"bootstrap" or even fix the specific problem (and avoid a complete
bootstrap), but for less-versed users it can be difficult to detect
the problem.


        Stefan