[Bino-list] Selecting Qt versions

[Ben Simons]

Hi

 

For those struggling with various versions of Qt in linux, here’s a good blog.

 

  https://harishnavnit.wordpress.com/2014/03/24/handling-multiple-versions-of-qt/

 

 

Essentially, the solution is to set the environment variable: QT_SELECT

“qtchooser” looks like it should do it for you, but it seems it just tells

you what’s going on. It does not choose, as such.

 

This is what it looks like on my machine.

(Gentoo Linux, 4.1.12-gentoo #1 SMP PREEMPT Tue Jan 12 13:03:42 AEDT 2016 x86_64)

 

 

     $ qtchooser

    Usage:

      qtchooser { -l | -list-versions | -print-env }

      qtchooser -install [-f] [-local] <name> <path-to-qmake>

      qtchooser -run-tool=<tool name> [-qt=<Qt version>] [program arguments]

      <executable name> [-qt=<Qt version>] [program arguments]

 

    Environment variables accepted:

     QTCHOOSER_RUNTOOL  name of the tool to be run (same as the -run-tool argument)

     QT_SELECT          version of Qt to be run (same as the -qt argument)

 

     $ qtchooser -print-env

    QT_SELECT="default"

    QTTOOLDIR="/usr/lib64/qt4/bin"

    QTLIBDIR="/usr/lib64/qt4"

 

     $ qmake -v

    QMake version 2.01a

    Using Qt version 4.8.6 in /usr/lib64/qt4

 

     $ qtchooser -list-versions

    4

    5

    default

    qt4-x86_64-pc-linux-gnu

    qt4

    qt5-x86_64-pc-linux-gnu

    qt5

 

     $ export QT_SELECT=5

 

     $ qmake -v

    QMake version 3.0

    Using Qt version 5.4.2 in /usr/lib64

 

     $ qtchooser -print-env

    QT_SELECT="5"

    QTTOOLDIR="/usr/lib64/qt5/bin"

    QTLIBDIR="/usr/lib64"

     $

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