[CMake] [Paraview] Forcing a Qt version

[Renato N. Elias]

Michael and Clinton

I guess I'm facing a CMake's bug. I'm actually working with two Qt4 
versions: Qt 4.4.2 (official distribution, including VS2008 integration) 
and Qt 4.3.4 (open source distribution). I've set the QTDIR variable as 
Michael suggested (in two places. Firstly in my own environment 
variables and secondly in the system's variables) but it had not worked. 
After that I downgraded CMake to 2.6.2 (official release), same problem.

Clinton, setting the QT_QMAKE_EXECUTABLE in CMake was the first thing I 
tried (take a look at here 
http://www.nacad.ufrj.br/~rnelias/paraview/qt.JPG). It should be the 
easiest way. CMake keeps my set but mix with the other Qt stuffs with 
the newest version (4.4.2). Thus, when I try to launch the compiled PV I 
get an error message saying that it's not possible to find the entry 
point of the procedure ?focusNextPrevChild at QGraphicsView@@MAE_N_N at Z in 
dynamic library QtGui4.dll. My guess, is that Visual Studio is "qmaking" 
with version 4.3.4 and linking against 4.4.2.

By the way, should PV3 work with 4.4.2? Has anybody tried it?

Regards

Renato



Clinton Stimpson wrote:
>
> If there's a qmake in your PATH, it takes precedence over whatever you 
> set QTDIR to be.
> By the way, the use of QTDIR has been deprecated by Trolltech.
> Another thing you can do is set QT_QMAKE_EXECUTABLE in the cmake-gui 
> before you hit configure for the first time, and it won't matter what 
> your PATH is.
>
> Clint
>
> Michael Jackson wrote:
>> Renato
>>    Assuming you really meant Qt 4.3.4 and NOT Qt 3.3.4 here is what 
>> you need to do.
>>
>> Remove everything from your build directory so we can start clean.
>> Go to "My Computer" and add/check/set the QTDIR (Capitalization 
>> counts) to your Qt 4 installation.
>> Launch CMakeSetup or CMake-GUI.exe and configure ParaView. You should 
>> at most get a warning about the version of Qt your are using and the 
>> "required" version.
>>
>> Everything _should_ work.
>>
>> Now, if you are really trying to use Qt 3 instead of Qt 4 then that 
>> is not supported. YOu need at least Qt 4.3 to build ParaView.
>>
>> Mike Jackson
>>
>> On Oct 7, 2008, at 10:31 AM, Renato N. Elias wrote:
>>
>>>
>>> Hi Michael,
>>>
>>> there's something overriding my QTDIR because CMake still points to 
>>> the wrong Qt version. I've set both QT_QMAKE_EXECUTABLE and QTDIR to 
>>> 3.3.4 version, but CMake still returns me a warning that I'm using 
>>> an unsupported version of Qt. Now I'm trying to understand all that 
>>> CMake sintaxe in FindQt4.cmake and UseQt4.cmake modules.
>>>
>>> weird, isn't it?!
>>>
>>> Renato.
>>>
>>> Michael Jackson wrote:
>>>>
>>>> On Oct 7, 2008, at 9:26 AM, Renato N. Elias wrote:
>>>>
>>>>>
>>>>> Hi folks,
>>>>>
>>>>> I'm facing a curious problem here. I was using Qt-4.3.4 to compile 
>>>>> ParaView in a Windows machine and it had been working fine but 
>>>>> after installing a second version of Qt (4.4.2), CMake 2.6 (patch 
>>>>> 2 RC-5) seems to be getting confused about which version it should 
>>>>> use. Even pointing QT_QMAKE_EXECUTABLE to Qt-4.3.4, CMake insists 
>>>>> in pointing all other stuffs to Qt-4.4.2 paths (QT_DOC_DIR, 
>>>>> QT_INCLUDE_DIR, QT_LIBRARY_DIR and so on...). In my environment I 
>>>>> have set QT_QMAKE_EXECUTABLE to Qt-4.3.4 but it's not solving the 
>>>>> problem. Is there any other environment variable that could be 
>>>>> used to force CMake in using the correct version of Qt?
>>>>>
>>>>> Regards
>>>>>
>>>>> Renato.
>>>>> _______________________________________________
>>>>> ParaView mailing list
>>>>> ParaView at paraview.org
>>>>> http://www.paraview.org/mailman/listinfo/paraview
>>>>
>>>> You can set QTDIR to the installation directory. CMake will try to 
>>>> use that variable if it finds it. Also, once the Qt libraries and 
>>>> stuff is set in a build directory it is pretty hard to get it to 
>>>> change. Clearing the build directory and starting out again with 
>>>> the QTDIR env variable set should help you find the correct version.
>>>>
>>>> Alternately you can open the CMakeCache.txt and remove all traces 
>>>> of ANY variable with QT in its name. This isn't exactly the 
>>>> preferred way to trouble shoot this problem but has worked in the 
>>>> past, plus saves all your compiled code from having to be recompiled.
>>>>
>>>>
>>>> Mike Jackson
>>>> _______________________________________________
>>>> ParaView mailing list
>>>> ParaView at paraview.org
>>>> http://www.paraview.org/mailman/listinfo/paraview
>>>>
>>>
>>> _______________________________________________
>>> ParaView mailing list
>>> ParaView at paraview.org
>>> http://www.paraview.org/mailman/listinfo/paraview
>>
>> _______________________________________________
>> ParaView mailing list
>> ParaView at paraview.org
>> http://www.paraview.org/mailman/listinfo/paraview
>
>
> _______________________________________________
> ParaView mailing list
> ParaView at paraview.org
> http://www.paraview.org/mailman/listinfo/paraview
>