[PATCH libICE docs] Add top-level target for documentation.

[Gaetan Nadon]

On Tue, 2010-11-23 at 11:21 -0800, Dan Nicholson wrote:

> That's the point. If you don't make it PHONY, make keeps looking for a
> file called documents to show up. Since we know one will never be
> there, we can tell make not to bother looking. Look at all the things
> automake declares as PHONY.
> 
> .PHONY: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) CTAGS GTAGS \
>         all all-am am--refresh check check-am clean clean-generic \
> 

Correct, I read about that afterwards. Make will perform better as there
is no need
to locate a file and check time stamp and so on. To be nice to make,
"lint"
should also be listed in .PHONY.
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