qtchooser 配置和使用多个Qt版本

qtchooser 配置和使用多个Qt版本

系统 ： ubuntu 20.04 LTS

安装qtchooser

sudo apt install qtchooser
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用法

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)

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查看当前系统默认Qt版本和配置信息

wmx@wmx-ubuntu:~$ qtchooser -l
default
4
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qt4-x86_64-linux-gnu
qt4
qt5-x86_64-linux-gnu
qt5
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查看配置文件路径

wmx@wmx-ubuntu:~$ locate 4.conf  |grep qtchooser
/snap/vlc/2344/etc/xdg/qtchooser/snappy-qt4.conf
/snap/vlc/3078/etc/xdg/qtchooser/snappy-qt4.conf
/usr/lib/x86_64-linux-gnu/qtchooser/4.conf
/usr/lib/x86_64-linux-gnu/qtchooser/qt4.conf

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可以看到 qtchooser 默认配置路径是

/usr/lib/x86_64-linux-gnu/qtchooser/
/usr/share/qtchooser/

# 这里是用户路径 /home/wmx ，等效路径 ~/.config/qtchooser 
/home/wmx/.config/qtchooser 
 
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去掉重复配置

wmx@wmx-ubuntu:~$ cat /usr/lib/x86_64-linux-gnu/qtchooser/4.conf
/usr/lib/x86_64-linux-gnu/qt4/bin
/usr/lib/x86_64-linux-gnu
wmx@wmx-ubuntu:~$ 
wmx@wmx-ubuntu:~$ cat /usr/lib/x86_64-linux-gnu/qtchooser/qt4.conf
/usr/lib/x86_64-linux-gnu/qt4/bin
/usr/lib/x86_64-linux-gnu
wmx@wmx-ubuntu:~$ locate qt4-x86_64-linux-gnu.conf |grep qtchooser
/usr/share/qtchooser/qt4-x86_64-linux-gnu.conf
wmx@wmx-ubuntu:~$ cat /usr/share/qtchooser/qt4-x86_64-linux-gnu.conf
/usr/lib/x86_64-linux-gnu/qt4/bin
/usr/lib/x86_64-linux-gnu

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4、qt4、qt4-x86_64-linux-gnu 相同
5、qt5、qt5-x86_64-linux-gnu相同

所以我们删掉重复的配置文件

sudo rm -rv /usr/lib/x86_64-linux-gnu/qtchooser/4.conf
sudo rm -rv /usr/lib/x86_64-linux-gnu/qtchooser/5.conf
sudo rm -rv /usr/share/qtchooser/qt4-x86_64-linux-gnu.conf
sudo rm -rv /usr/share/qtchooser/qt5-x86_64-linux-gnu.conf
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查看

wmx@wmx-ubuntu:~$ qtchooser -l
default
qt4
qt5
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添加自己新安装的Qt版本

qtchooser -install qt5.12.12  /home/wmx/Qt5.12.12/gcc_64/bin/qmake
qtchooser -install qt6.2.4  /home/wmx/Qt6.2.4/gcc_64/bin/qmake
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查看

wmx@wmx-ubuntu:~$ qtchooser -l
default
qt4
qt5.12.12
qt5
qt6.2.4
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安装配置文件在用户目录

~/.config/qtchooser/qt5.12.12.conf
~/.config/qtchooser/qt6.2.4.conf
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选择Qt 版本，配置 .bashrc, 在文件末尾添加

#------------- wmx add -----------------
# qtchooser -l 
export QT_SELECT=qt6.2.4
#export QT_DEBUG_PLUGINS=1
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