qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt5/bin/qmake' since it links to qmake itself. Check your installation.

在linux系统上装了多个Qt版本，直接修改default.conf，输入qmake -v，打印qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt5/bin/qmake' since it links to qmake itself. Check your installation.

1、打开/usr/lib/x86_64-linux-gnu/qtchooser目录，查看对应版本的conf文件，打开，查看

2、编辑/usr/lib/x86_64-linux-gnu/qt-default/qtchooser/default.conf，将步骤1的conf文件内容拷贝到这个文件中保存