Qt Linux Deployment

KeithS

Did you read the tripleboot.org blog? That describes how to deploy Qt apps and in particular how to deploy the Qt plugins such as libqxcb.so.

shahriar25

Hi @KeithS
my problem is that my libqxcb.so is 10 KB instead of 1.3 MB ! I have installed Qt with the .run file to the default path. what am I doing wrong?

KeithS

@shahriar25

That sounds about right:

-rwxr-xr-x 1 root root 10752 Feb 25 09:39 libqxcb.so

JKSH

@shahriar25 said:

my problem is that my libqxcb.so is 10 KB instead of 1.3 MB !

That's not a problem.

libqxcb.so was 1.3 MB in Qt 5.3, but reduced to 10 KB in Qt 5.5.

shahriar25

Hi @JKSH @KeithS thank you both
It worked you were right I had the right file. but how ever I got another problem when I ran the executable from terminal:

cannot mix incompatible Qt library ( version 0x50500 ) with this library ( version 0x50501 )

what is this problem? how do I fix it? thanks in advance

SGaist

Hi,

Do you have 5.5.1 installed on your system ? What distribution are you using ?

shahriar25

Hi @SGaist
well I do have 5.5.1 installed on my fedora but I wanted to test deploying qt programs with shared library so I tested it on a live fedora with gnome.
the thing is that I don't have qt 5.5 anywhere I only have 5.5.1 and 5.6 beta!

SGaist

What version does the live fedora provide ?

shahriar25

well the qt is not installed on it and it is fedora 23 with gnome UI

SGaist

Are you sure Qt's not installed on it ? I don't mean the development environment but I'd be surprised that the libraries are not there at all.

shahriar25

Hi @SGaist
Well I'm sure the qt IDE is not installed and also it's a live fedora I haven't installed it so it is the pure fedora. I don't know if qt libs are installed on it or not

SGaist

Then run ldd your_application_name on that version of Fedora. You'll see if you have Qt available.