[CMake] cache variable prevents FIND_LIBRARY to be called again :/

[Brad King]

Tristan Carel wrote:
> Hi,
> 
> The documentation of `FIND_LIBRARY' specify:
> "Once one of these calls succeeds the result variable will be set and
> stored in the cache so that neither call will search again."
> 
> Is there a way to avoid this behavior? I've got a FIND_LIBRARY whose
> search locations depends of the result of a EXECUTE_PROCESS so this
> FIND_LIBRARY needs to be performed each time I run `configure'.
> 
> Is there a way to remove an entry from the cache?

It doesn't have to be removed from the cache.  The command should just
not see the value loaded from it:

SET(MYLIB)
FIND_LIBRARY(MYLIB ...)

-Brad