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

[clinton at elemtech.com]

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