Failed to load platform plugin "xcb"

mrajanna

Hello Group,

I generated executable using Qt5 beta on ubuntu 12.04. Now I copied the executable and required shared libraries to other Ubuntu 12.04(that doen't have qt5 installed) machine. But when I try to execute ./execuatble_filename, I am encountering with below error.

Failed to load platform plugin "xcb". Available platforms are:

Aborted (core dumped)

I have installed below libraries.
libxcb1 libxcb1-dev libx11-xcb1 libx11-xcb-dev libxcb-keysyms1 libxcb-keysyms1-dev libxcb-image0 libxcb-image0-dev libxcb-shm0 libxcb-shm0-dev libxcb-icccm4 libxcb-icccm4-dev libxcb-sync0 libxcb-sync0-dev libxcb-xfixes0-dev libxrender-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0 libxcb-render-util0-dev

Please help me.

Regards
Mohan

lgeyer

You will have to deploy the Qt plugins as well, at least the <code>xcb</code> platform plugin.

mrajanna

Please tell me how could I deploy Qt plugins or xcb platform plugins.

lgeyer

After building Qt you'll find a set of libraries in <code>qtbase/plugins</code>. You need at least <code>qtbase/plugins/platforms/xcb</code>.

mrajanna

FYI: I din't build Qt5. I have only installed it.

Under /home/mohan/Qt5.0.0beta1/Src/Qt/5.0.0-beta1/qtbase/src/plugins/platforms/xcb, I don't see any library files

home/mohan/Qt5.0.0beta1/Desktop/Qt/5.0.0-beta1/gcc/plugins/platforms, I found libxcb.so file

I even tried copying this library under /usr/lib of othe linux system. But still no breakthrough.

oreja

I had the same issue. I had forgotten to actually install Qt i.e. after "./configure" and "make" I didn't run "make install". After "make install" everything is fixed.

phuongvu_0203

Hi mrajanna,
I get the same issue.
Have you fixed it yet? Could you give me some ideas?

@oreja
hi oreja
I trying open terminal (Ubuntu) and cd to qtbase/
do "./configure" and "make" and "make install" , it says:
bq. make: *** No targets specified and no makefile found. Stop.

I don't know how to fix it...

sidiabale

I've had the exact same problem for some days now and I was wondering if anyone has found a solution and they are willing to share.

@Failed to load platform plugin "xcb". Available platforms are:

Aborted@

In my case, I install qt on one system, copy it to another system and try to build and run my application. On the system where I installed Qt, everything works fine. However, on the system where I have copied Qt and used it to build my application, I get the error:

Both systems run Ubuntu 12.04 (32-bit). It appears the qt installer does something extra which I am yet to figure out. Any help will be appreciated

vladstelmahovsky

remove qt.conf from the folder with your app

sidiabale

There's no qt.conf file in the app folder

Adrien Leravat

When you compile/install Qt, some paths are hard coded into qmake, thus making the copy Qt directory not working properly. Please try installing, instead of copying it.

goblincoding

Hi there,

This is how I solved my deployment issues to 12.04.:

"Deploying Qt5 Apps on Ubuntu 12.04":http://goblincoding.com/2013/11/07/deploying-qt-5-applications-on-ubuntu-12-04/

Hope that helps!

sidiabale

Hi All,

In my case, I solved the problem by explicitly specifying the QT_PLUGIN_PATH to point to <qt_installation_home>/gcc/plugins.

PS: I subsequently encountered problems with QML modules not being found which I fixed by explicitly specifying the QML2_IMPORT_PATH to point to <qt_installation_home>/gcc/qml.