根据正点原子的移植教程移植完成并成功运行，这是前提。
但是自己用buildroot做的rootfs,把qt的库放到里边，运行测试程序缺报错
qt.qpa.plugin: Could not load the Qt platform plugin "linuxfb" in "/usr/lib/arm-qt/plugins" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: linuxfb, minimal, offscreen, vnc.
Aborted
网上查找方法,在/etc/profile中添加对qt的调试信息的输出使能
source /etc/profile后，重新执行测试程序 一下是打印信息
QFactoryLoader::QFactoryLoader() checking directory path "//platforms" ...
Cannot load library /usr/lib/arm-qt/plugins/platforms/libqlinuxfb.so: (libts.so.0: cannot open shared object file: No such file or directory)
QLibraryPrivate::loadPlugin failed on "/usr/lib/arm-qt/plugins/platforms/libqlinuxfb.so" : "Cannot load library /usr/lib/arm-qt/plugins/platforms/libqsuch file or directory)"
qt.qpa.plugin: Could not load the Qt platform plugin "linuxfb" in "/usr/lib/arm-qt/plugins" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: linuxfb, minimal, offscreen, vnc.
Aborted
可以看到是libts.so.0的问题，对比之前正确启动了的rootfs,发现在有问题的rootfs的lib文件夹中缺少libts.*库，所以全部复制进去，再测试，就好了。
我在用buildroot构建rootfs的回收，没有选ts相关的选项，所以lib中没有libts相关的东西。
原文：https://www.cnblogs.com/Rainingday/p/14914658.html