[CMake] How to clear variable.

[Werner Smekal]

Hi Klaas,

I'm quite sure, that

set(VARIABLE)

will clear it.

Werner

klaas.holwerda wrote:
> Hi,
> 
> The find_path documentation says:
> 
> If the file in a directory is found the result is stored in the variable 
> and the search will not be repeated unless the variable is cleared.
> 
> So how do i clear a variable?
> 
> The only thing i can work out is:
> 
> SET( VAR VAR-NOT-FOUND CACHE INTERNAL "" )
> 
> Is that really the way??
> 
> Thanks,
> 
> Klaas
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-- 
Dr. Werner Smekal
Institut fuer Allgemeine Physik
Technische Universitaet Wien
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