运行QT程序报错 is an invalid ELF object
首先上报错log
root@TinaLinux:/# cd usr/share/qt5/examples/gui/analogclock/
root@TinaLinux:/usr/share/qt5/examples/gui/analogclock# ./analogclock
QFactoryLoader::QFactoryLoader() checking directory path "/usr/lib/qt5/plugins" ...
QFactoryLoader::QFactoryLoader() checking directory path "/usr/share/qt5/examples/gui/analogclock" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/share/qt5/examples/gui/analogclock/analogclock"
QElfParser: '/usr/share/qt5/examples/gui/analogclock/analogclock' is an invalid ELF object (shstrtab section header seems to be at 0)
"'/usr/share/qt5/examples/gui/analogclock/analogclock' is an invalid ELF object (shstrtab section header seems to be at 0)"
not a plugin
QFactoryLoader::QFactoryLoader() checking directory path "/usr/lib/qt5/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt5/plugins/platforms/libqeglfs.so"
QElfParser: '/usr/lib/qt5/plugins/platforms/libqeglfs.so' is an invalid ELF object (shstrtab section header seems to be at 0)
"'/usr/lib/qt5/plugins/platforms/libqeglfs.so' is an invalid ELF object (shstrtab section header seems to be at 0)"
not a plugin
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt5/plugins/platforms/libqlinuxfb.so"
QElfParser: '/usr/lib/qt5/plugins/platforms/libqlinuxfb.so' is an invalid ELF object (shstrtab section header seems to be at 0)
"'/usr/lib/qt5/plugins/platforms/libqlinuxfb.so' is an invalid ELF object (shstrtab section header seems to be at 0)"
not a plugin
QFactoryLoader::QFactoryLoader() checking directory path "/usr/share/qt5/examples/gui/analogclock/platforms" ...
This application failed to start because it could not find or load the Qt platform plugin "linuxfb"
in "/usr/lib/qt5/plugins".
Reinstalling the application may fix this problem.
Aborted在目录/usr/lib/qt5/plugins/platforms/下的确是有libqeglfs.so和libqlinuxfb.so文件的，但是报错说是一个无效的ELF对象，推断可能是so文件损坏了，把编译出来的libqeglfs.so与libqlinuxfb.so使用adb push再次推送到小机端，程序执行成功。
常用QT5 环境变量
#export QT_QPA_PLATFORM=eglfs:size=800x480
#export FRAMEBUFFER=/dev/fb1
export QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/qt5/plugins
export QT_QPA_PLATFORM=linuxfb:fb=/dev/fb0:size=800x480:mmSize=800x480:offset=0x0:tty=/dev/tty1
export QT_QPA_FONTDIR=/usr/lib/fonts
export QT_QPA_GENERIC_PLUGINS=tslib
export QT_QPA_GENERIC_PLUGINS=evdevmouse:/dev/input/mouse0
export QT_QPA_GENERIC_PLUGINS=evdevkeyboard:/dev/input/event2
export QT_DEBUG_PLUGINS=1
export QT_LOGGING_RULES=qt.qpa.input=true| 变量 | 说明 |
|---|---|
| QT_QPA_PLATFORM | QT运行的平台，有eglfs，linuxfb，wayland等等 |
| QT_QPA_PLATFORM_PLUGIN_PATH | 平台的插件路径 |
| QT_QPA_FONTDIR | 需要加载字体的路径 |
| QT_QPA_GENERIC_PLUGINS | 指定使用的触摸库，输入设备 |
| QT_DEBUG_PLUGINS | 是否打开QT调试功能 |
| QT_LOGGING_RULES | 日志记录规则 |
| FRAMEBUFFER | 可以指定使用的fb设备 |
