Cross Compiling on BeagleBone Black

SPRB

Hi,

I successfully configured "qt-everywhere-opensource-src-4.8.6", also "make" and "make install" was successful.

I created a Qt application and compiled it. Even it compiled successfully.
I deployed it onto the beaglebone black.

But the binary is not running on the board,
I have even transferred all the libraries into board. Still the binary is not running.

It is stating an error “bash: ./Test: No such file or directory”.

Can you please help me with this as it's very urgent.

Thank you.

SGaist

The message is pretty self-explanatory, Test doesn't exist

SPRB

Hi,

When I give "ls -al" it is listing the "Test", So its confirmed that Test binary is present in the path.

SPRB

Hi,
I some tried to link the libraries now I am getting this error when I execute the exe in the target system.
"./Test : error while loading shared libraries: libEGL.so.1: cannot open shares object file: No such file or directory"

SGaist

You are missing some dependencies on your target

SPRB

hi,

The all the above issues where resolved.

But currently I am facing a new issue. I deployed my application successfully into beaglebone black and even the application is running. But no texts are being displayed on the UI. I tried with linking the Qt directory path but i was not successful in that.

Can I know what changes needs to be done to get the text displayed on the UI?

SGaist

Did you deploy the font files ?

SPRB

Yes I have deployed the fonts and have also specified the QT_QWS_FONTDIR to that where the fonts are there.

When I set the width and height by giving the following environmental variable: QWS_DISPLAY = LinuxFB:mmWidth=800:mmHeight=480, I could see some of the texts but it is not properly aligned and some texts are still missing.

Can I know how can I resolve it?

SGaist

Are you getting any information on the console stating that there's a problem ?

SPRB

No I am not getting any error on the console. Everything seems to be fine.
I even tried by generating the fontdir file for the fonts, thinking it might be searching for that fontdir file. But I could not achieve success out of this.

SPRB

I also tried several ways for getting the text displayed. Like setting the QT_QWS_FONTDIR to my font dir, By setting the QWS_DISPLAY, also I tried to run the application by giving the following command: "./Test -qws -font unicode" but couldn't achieve any success.

Please direct me where I am going wrong.
Waiting for an helpful suggestion.

SGaist

What output do you get on your console when running your application ?

SPRB

The UI is being displayed as a output but none of the texts are shown.

SGaist

Are you running it directly on the target or using ssh/serial console ?

SPRB

I am deploying the application into target using Qtcreator itself. As Qtcreator provides that options.

SGaist

What language are you using for your application ?

SPRB

I am using "English" language itself.

Now I am trying to run my application which also includes images of type ".png", but now application is not at all running, now I am getting an error in console like :
"QFSFileEngine::open: No file name specified.
Bus errorixel: coordinate (-1,-1) out of range"

SGaist

Looking very strange, are you sure your target Qt is properly compiled/installed ?

SPRB

Ya I am sure, I dint get any errors I have installed many times without any error.

Can I know why that error "QFSFileEngine" error is there??
Though Images are there why it is unable to fetch it?

SPRB

Hi,
I resolved that "QFSFileEngine" error, it was searching for a file which I have specified in my application as I had not deployed that I was getting that error.

Now I am getting an error like:
"Cannot open input device '/dev/tty0':Permission denied
QImage::pixel: coordinate (-1,-1) out of range
Bus error".

Please help me why this Bus error is coming?