[CMake] Qt find package location

[David Cole]

If you set QT_QMAKE_EXECUTABLE to the full path to a qmake, *that* qmake is
used above all else to find the right Qt. Regardless of QTDIR or PATH.
Setting QT_QMAKE_EXECUTABLE is *the* official way to tell CMake where the Qt
that you want is. All else is a "find-and-guess" game if you have multiple
Qt's available.


HTH,
David


On Wed, Mar 11, 2009 at 1:46 PM, Michael Jackson <
mike.jackson at bluequartz.net> wrote:

> You can always do:
>
> export QTDIR=/home/dhenry/qtsdk-2009.01/qt
> export PATH=$QTDIR/bin:$PATH
>
> to put the desired qmake as the first one found.
>
> _________________________________________________________
> Mike Jackson                  mike.jackson at bluequartz.net
> BlueQuartz Software                    www.bluequartz.net
> Principal Software Engineer                  Dayton, Ohio
>
>
>
>
> On Mar 11, 2009, at 1:34 PM, Doug Henry wrote:
>
>  thanks for the responses.  I may have missed a detail somewhere.  I set
>> QTDIR (environment and I tried in cmake file) but it always finds the same
>> version of Qt.  Below is a listing of my attempts.  cmake always finds
>> version 4.3.4, which is installed in /tools/lin64, but my QTDIR variable
>> points to the qmake directory for the newest 4.5.0 version of Qt SDK.  If I
>> change my path so /home/dhenry/qtsdk-2009.01/qt/bin is first, then cmake
>> will find version 4.5.  any thoughts on my usage of QTDIR?
>>
>> (lin64):~/tmp/build$ echo $QTDIR
>> /home/dhenry/qtsdk-2009.01/qt/bin
>>
>> (lin64):~/tmp/build$ which qmake
>> /tools/lin64/bin/qmake
>>
>> (lin64):~/tmp/build$ ls /home/dhenry/qtsdk-2009.01/qt/bin/qmake
>> /home/dhenry/qtsdk-2009.01/qt/bin/qmake
>>
>>
>> On Wed, Mar 11, 2009 at 12:58 PM, Pau Garcia i Quiles <
>> pgquiles at elpauer.org> wrote:
>> On Wed, Mar 11, 2009 at 5:48 PM, Boudewijn Rempt <boud at valdyas.org>
>> wrote:
>> > On Wed, 11 Mar 2009, Doug Henry wrote:
>> >
>> >> I have multiple Qt installations and would like to know how I guide the
>> >> find_package(Qt4) command to find the correct one.  I assume there is a
>> >> variable I can set which defines the search path, which will allow me
>> to
>> >> change the path to find a different installed version.  Thanks.
>> >
>> > Afaik, that uses the location of the first qmake it finds on the path
>>
>> In addition to that, if you use the CVS version of CMake, you can
>> specify a particular version of Qt:
>>
>> FIND_PACKAGE( Qt4 4.4.3 )
>>
>> That means "prefer 4.4.3" to any other version. If you add EXACT to
>> that, it will only accept Qt 4.4.3:
>>
>> FIND_PACKAGE( Qt4 4.4.3 EXACT )
>>
>> You can also use the COMPONENTS syntax instead of SET(
>> QT_USE_component) to say what components you want:
>>
>> FIND_PACKAGE( Qt4 COMPONENTS QtGui QtXml QtNetwork )
>>
>> --
>> Pau Garcia i Quiles
>> http://www.elpauer.org
>> (Due to my workload, I may need 10 days to answer)
>>
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