Qt5.1 failed to load platform plugin xcb
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i'm using ubuntu 12.04 and qt5.1. i compile my project with no errors but when i try to launch my application on other machine i get the following error:
@Failed to load platform plugin "xcb". Available platforms are:
Annullato (core dump creato)@
i add the required libraries to the ld_library_path:
@linux-gate.so.1 => (0xb7705000)
libQt5Widgets.so.5 => /home/computer/libs/libQt5Widgets.so.5 (0xb70c4000)
libQt5Core.so.5 => /home/computer/libs/libQt5Core.so.5 (0xb6c42000)
libstdc++.so.6 => /usr/lib/i386-linux-gnu/libstdc++.so.6 (0xb6b5c000)
libgcc_s.so.1 => /lib/i386-linux-gnu/libgcc_s.so.1 (0xb6b3e000)
libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xb6995000)
libQt5Gui.so.5 => /home/computer/libs/libQt5Gui.so.5 (0xb652a000)
libpthread.so.0 => /home/computer/libs/libpthread.so.0 (0xb650f000)
libgobject-2.0.so.0 => /home/computer/libs/libgobject-2.0.so.0 (0xb64bf000)
libglib-2.0.so.0 => /home/computer/libs/libglib-2.0.so.0 (0xb63c6000)
libX11.so.6 => /home/computer/libs/libX11.so.6 (0xb6292000)
libm.so.6 => /home/computer/libs/libm.so.6 (0xb6266000)
libicui18n.so.51 => /home/computer/libs/libicui18n.so.51 (0xb6044000)
libicuuc.so.51 => /home/computer/libs/libicuuc.so.51 (0xb5eca000)
libdl.so.2 => /home/computer/libs/libdl.so.2 (0xb5ec5000)
libgthread-2.0.so.0 => /home/computer/libs/libgthread-2.0.so.0 (0xb5ec2000)
librt.so.1 => /home/computer/libs/librt.so.1 (0xb5eb9000)
/lib/ld-linux.so.2 (0xb7706000)
libGL.so.1 => /home/computer/libs/libGL.so.1 (0xb5e5a000)
libffi.so.6 => /home/computer/libs/libffi.so.6 (0xb5e52000)
libpcre.so.3 => /home/computer/libs/libpcre.so.3 (0xb5e16000)
libxcb.so.1 => /home/computer/libs/libxcb.so.1 (0xb5df5000)
libicudata.so.51 => /home/computer/libs/libicudata.so.51 (0xb48ac000)
libglapi.so.0 => /home/computer/libs/libglapi.so.0 (0xb4895000)
libXext.so.6 => /home/computer/libs/libXext.so.6 (0xb4882000)
libXdamage.so.1 => /home/computer/libs/libXdamage.so.1 (0xb487e000)
libXfixes.so.3 => /home/computer/libs/libXfixes.so.3 (0xb4878000)
libX11-xcb.so.1 => /home/computer/libs/libX11-xcb.so.1 (0xb4875000)
libxcb-glx.so.0 => /home/computer/libs/libxcb-glx.so.0 (0xb485d000)
libXxf86vm.so.1 => /home/computer/libs/libXxf86vm.so.1 (0xb4856000)
libdrm.so.2 => /home/computer/libs/libdrm.so.2 (0xb4849000)
libXau.so.6 => /home/computer/libs/libXau.so.6 (0xb4845000)
libXdmcp.so.6 => /home/computer/libs/libXdmcp.so.6 (0xb483e000)@but it doesn't work. what is the problem?
i also try to reconfigure qt with the option -qt-xcb but it still doesn't work.
ps. sorry for my bad english