[CMake] [Paraview] Forcing a Qt version

[Clinton Stimpson]

An updated FindQt4.cmake has been committed to CVS that makes this  
easier.
If you change the qmake pointed to, the includes, libraries, etc...  
are re-found.
So you can change the Qt you're using for your project simply by  
changing the QT_QMAKE_EXECUTABLE variable.

Clint


On Oct 8, 2008, at 7:03 AM, Bill Hoffman wrote:

> Renato N. Elias wrote:
>> Hi John, in my case I also tried to clean all files from my build  
>> directory (uncountable times) before changing Qt version, but it  
>> has not worked either (this screen shot was taken from one of my  
>> tries http://www.nacad.ufrj.br/~rnelias/paraview/qt.JPG). The only  
>> thing that I have not tested was the hand edition of cache files.  
>> Something (probably me) must have messed up my system or CMake  
>> really have a big problem in distinguishing between different  
>> versions of the same library (especially Qt).
>> I finally gave up in struggling with CMake and deleted the older  
>> version of Qt (it's easier to decide when you don't have  
>> options ;o). In fact, I was keeping version 4.3.4 in my machine  
>> just because I thought it were mandatory for ParaView 3.3.x  
>> compilation, and it's not (at least I haven't found any  
>> incompatibility yet).
>> Anyway, bug or one more weirdness of the software's world...
>
> I am 99% sure, that if you do this it will work:
>
>
> 1. put the correct qmake in your PATH
> 2. run cmake-gui or CMakeSetup  from the shell with the correct  
> qmake in the PATH
> 3. Select a new build directory (such that cmake prompts you to  
> create it), then configure
>
>
> I have several versions of qt, and this works fine.
>
> The idea is that the environment that you run CMake from should be  
> setup for the version of qt your are using.  Once CMake picks a qt,  
> it can not be changed.
>
> -Bill
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