[CMake] How to exclude empty dirs from install

[Alexander Neundorf]

On Friday 23 July 2010, Brian Davis wrote:
> --snip--
> Because if they were excluded, we would have someone on the list next
> month asking why she can't create empty directories with install()
> commands.
> --end snip--
>
> True point taken.  Then we would have 2 people who are correct ... Olaf and
> this said hypothetic other person.   With software there is:
>
> 1) The way it should work
> 2) The way it was designed to work
> 2) The way it was documented to work
> 3) The way it does work
>
> Rarely do these four things agree in software.  

And rarely "they way it should work" means the same if the number of opinions 
considered is >= 2 ;-)

> When they do it is only for 
> a brief time when it is replaced with a version that is "better" in my
> experience.  These discussions are the only way to make CMake actually
> better (or suck less - which is all I think any of us can hope for)... Keep
> up the good work Olaf!

Alex