[Interest] Error: Application cannot be started because it failed to load qt platform plugin “eglfs”

Thiago Macieira thiago.macieira at intel.com
Fri Nov 15 08:55:50 CET 2013

On sexta-feira, 15 de novembro de 2013 07:24:44, Ramakanthreddy Kesireddy 
> undefined symbol:
> fbDestroyWindow    (/usr/local/qt5/plugins/platforms/libqeglfs.so)
> undefined symbol:
> fbCreateWindow    (/usr/local/qt5/plugins/platforms/libqeglfs.so)
> undefined symbol:
> fbGetDisplayByIndex    (/usr/local/qt5/plugins/platforms/libqeglfs.so)
> undefined symbol:
> fbGetDisplayGeometry    (/usr/local/qt5/plugins/platforms/libqeglfs.so)

I can't find any of those functions getting used anywhere in Qt source code.

The evidence says they're getting called. Therefore, the only conclusion is 
that they are called by inline functions from a non-Qt header or from a static 

Another important fact to remember is that all Qt plugins and libraries are 
linked with -Wl,--no-undefined. That means those functions *were* found at link 
time, but not at runtime. That means at least one of the libraries you linked 
to are not the same as you're running with.

Please recheck ALL library dependencies of that plugin that come from your 
toolchain. You're running against a library different than that which you 
compiled with.

Start with the most obvious candidates: the EGL and GLESv2 libraries.
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
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