virtual box ubuntu 20 qt creator 4.14

https://forum.qt.io/topic/119033/qt-creator-does-not-launch-on-ubuntu-20-04-1-in-virtualbox

在virtual box中安装qt creator，打开的时候会提示如下错误（直接通过图标打开，没有任何提示，需要用终端打开，可以看到错误日志）：

This application failed to start because it could not find or load the Qt platform plugin "xcb"
in "".

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.

Reinstalling the application may fix this problem.
Aborted (core dumped)

到qt creator的安装目录，进入到如下目录

./lib/Qt/plugins/platforms/

运行如下命令，会列出来确实的so库，把对应的库都安装上就可以了。

ldd libqxcb.so