[CMake] FindQt3.cmake bug - does not recognize uic

[clinton at elemtech.com]

On Tuesday 27 November 2007 10:52:55 am Anka Kochanowska wrote:
> Thanks for answering.
> Our application is built on different systems. Some of them have Qt3 and
> Qt4, some have not been properly installed, so having the condition
> would be helpful to diagnose the problem.
> FindQt3.cmake fails on Ubuntu, Debian and Mandrake. So we comment out
> the condition, but ...
> Also, there is no problem with moc and it is treated pretty much the
> same way as uic.
> What is your system?

I tried it on Fedora w/ CMake CVS.
uic -version gives me
"User Interface Compiler for Qt version 3.3.8"

What if you change the regex to this?
IF("${QTVERSION_UIC}" MATCHES ".* 3\\..*")

And did you check that the QT_UIC_EXECUTABLE in your CMakeCache.txt file is 
indeed a Qt3's uic (now that you mention some are not installed properly)?

Clint

>
> Anka
>
> clinton at elemtech.com wrote:
> >On Tuesday 27 November 2007 8:21:38 am Anka Kochanowska wrote:
> >>Hi!
> >>I am using Qt3 (3.3.3)
> >>In my CMakeList.txt I have conditionals:
> >>
> >>IF(QT_WRAP_UI)
> >>  QT_WRAP_UI( Basic IGNS_BASIC_HDR IGNS_BASIC_SRC ${IGNS_BASIC_GUI_SRC} )
> >>ENDIF(QT_WRAP_UI)
> >>
> >>This used to work still in CMake 2.4 patch 3. Since themn, the
> >>FindQt3.cmake  has been changed and it does not
> >>recognize uic.
> >>
> >>
> >>There is a problem with the following code:
> >>
> >>EXEC_PROGRAM(${QT_UIC_EXECUTABLE} ARGS "-version" OUTPUT_VARIABLE
> >>QTVERSION_UI)
> >>
> >>in my case  QTVERSION_UI  is:    User Interface Compiler for Qt version
> >>3.3.3
> >>
> >>The following test:
> >>SET(_QT_UIC_VERSION_3 FALSE)
> >>IF("${QTVERSION_UIC}" MATCHES ".* 3..*")
> >>  SET(_QT_UIC_VERSION_3 TRUE)
> >>ENDIF("${QTVERSION_UIC}" MATCHES ".* 3..*")
> >>
> >>sets QT_UIC_VERSION_3 to FALSE
> >>
> >>which causes the
> >>SET(QT_WRAP_UI FALSE)
> >>IF (QT_UIC_EXECUTABLE)
> >>  IF(_QT_UIC_VERSION_3)
> >>    SET ( QT_WRAP_UI TRUE)
> >>  ENDIF(_QT_UIC_VERSION_3)
> >>ENDIF (QT_UIC_EXECUTABLE)
> >>
> >>returning QT_WRAP_UI as FALSE
> >>
> >>I do not know how to set the regex in order to find 3 in  the version
> >>return by uic. I tried differnt things and miserably failed.
> >>
> >>Could anyone help, please?
> >>
> >>I have seen quite few postings about QT_WRAP_UI failure and the
> >>suggestions were either to drop the condition or to manually run uic!!!!
> >
> >I'm unable to reproduce this.  Do you have a simple CMakeLists.txt file
> > that you can reproduce this with?
> >
> >I'm also curious why you conditionally run uic.  Wouldn't your project
> > fail to build without that?  Do you really want IF(QT_FOUND) instead?
> >
> >Clint
>
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