[CMake] Re: Re: FindQt4 in 2.4.8 bug

[Bill Hoffman]

Hendrik Sattler wrote:

>> But:
>>
>> find_library(FOO_VAR foo)
>>
>> This will set FOO_VAR (in the cache) if it is not set, or if the value
>> has -NOTFOUND in it.
>>
>> However,
>>
>> set(FOO_VAR somevalue CACHE STRING "")
>>
>> Will only set FOO_VAR if it has no value at all.  Seems a bit 
>> inconsistent.
> 
> So you want to give NOTFOUND an even more special status than all the 
> other negative variable values? This is not even close to being 
> backwards-compatible. And you can always check for NOTFOUND and use 
> FORCE. I don't see the problem that qualifies for changing SET in an 
> incompatible way.
> 

OK, I am not that stuck on the idea.

-Bill