[CMake] handling global state

[Brandon J. Van Every]

William A. Hoffman wrote:
> At 05:10 PM 6/1/2006, Brandon J. Van Every wrote:
>
>   
>>>  
>>>       
>> STATIC?  Is that some post 2.4.2 thing?  It's not in the 2.4.2 docs.  What does it do?
>>     
> Sorry, that is not something you can do from the set command, INTERNAL does pretty much
> the same thing.
>
>
>   

Tried INTERNAL.  Thanks for the pointer.  The docs could stand an 
example.  It took me quite a number of hacks before I figured out that I 
had to type things like SET(MYVAR 310 CACHE INTERNAL "Isn't this a neato 
docstring!")  Anything with fewer elements than that and I just got 
lists with INTERNAL and so forth tacked on them.

On the other hand, I discovered that contrary to what I was expecting, 
if I define a variable before ADD_SUBDIRECTORY then it'll be trivially 
communicated to the subdirectory.  No CACHE INTERNAL "docstring" 
required.  I suppose CACHE INTERNAL "docstring" is for if I want to pass 
values back up from the subdirectories, or across subdirectories?


Cheers,
Brandon Van Every

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