[CMake] Deleting a variable

[Alexander Neundorf]

Hi,


Von: James Bigler <bigler at cs.utah.edu>

> I have some optional code that runs and creates some variables
> 
> IF(MY_VAR)
>    SET(MY_OTHER_VAR 2)
> ENDIF(MY_VAR)
> 
> If I turn off MY_VAR, I want MY_OTHER_VAR to do away like this:
> 
> IF(MY_VAR)
>    SET(MY_OTHER_VAR 2)
> ELSE(MY_VAR)
>    DELETE(MY_OTHER_VAR)
> ENDIF(MY_VAR)

SET(MY_OTHER_VAR)
or
SET(MY_OTHER_VAR FALSE)
should have the same effect, at least both will evaluate to false.
Is this good enough or do you need more ?

Bye
Alex


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