How to copy cross-compiled Qt binaries from one computer to another

Ketank16 · wrote on 17 Sept 2019, 11:03

@pablo-j-rogina I have read countless threads and posts on this forum. I've made my own little guide to help my colleagues. Its still a rough draft but I'll share it tonight. Keep in mind that I haven't been able to compile with EGLFS compatibility but yeah, nonetheless it will save time for you or the others.

Ketank16 · 17 Sept 2019, 14:52

@pablo-j-rogina

Here you can find the file that I've written. Make sure to suggest some changes too if you find something wrong.

Pablo J. Rogina · 17 Sept 2019, 15:27

@ketank16 thank you very much for sharing your knowledge.
I cannot test step by step since I don't have a BBB device, but it looks pretty much detailed and easy to follow.
One picky addition if you will: I'd add the "location" (i.e. HOST or BBB) to every step so to be sure where the action/command needs to be run, something like:

10. [HOST] Run following command in Qt directory:
...
14. [BBB] (Open Beaglebone over SSH and follow this step)

Ketank16 · 20 Sept 2019, 05:24

@pablo-j-rogina Thanks, already updated the file and completed the guide too. Hopefully people can find it useful from here.

Asha · 20 Sept 2019, 08:21

@ketank16

Hi,

as you said in your pdf file,the seventh step,

How to download the sysroot-relativelinks.py,

when I open the github it displaying the text file,there is no option for download purpose,

Asha · 20 Sept 2019, 05:36

@ketank16

Hi,

I am trying qt with beagleboneboard and I followed your document,

step by step,

After./configure(step 10),the result is

Step 11,make -j4 The result is :

Step 12:make install, The result is

Afer make installation I got the ~/BBB/sysroot/home/debian/Qt5ForBBB directory also,

I downloaded the fonts and copied those on to Qt5ForBBB/lib/fonts, and finished with step 14 also,

but I am not getting the qtcreator window,why I am not getting qt,please go through the screenshots and let me know if any mistakes is there,

as you showed on step 15,

How to launch the qt after step 14,please guide me...

Thankyou..

jsulm · A Asha 20 Sept 2019, 05:24

@asha said in How to copy cross-compiled Qt binaries from one computer to another:

but I am not getting the qtcreator window

What do you mean by that?
There is no need to cross compile QtCreator for the device unless you want to use it on your device. Simply install QtCreator via installer on your Ubuntu machine and create a Kit there with your cross compiled Qt.

Ketank16 · A Asha 20 Sept 2019, 05:24

@asha In your last screenshot, you can see udev errors. Apparently even after installing libudev on Beaglebone black and eventually copying it in sysroot doesn't solve the problem either. But a workaround is to make qmake look for udev in runtime rather than at compile time. The discussion and how-to is described in this thread here. You can follow it for current version of Qt as well. Let me know how the results come out for you.

Ketank16 · 23 Sept 2019, 10:03

@asha Easiest way is make a file with that name on your computer and copy the contents from git file to your local file. Run sudo chmod a+rx Sysroot-relativelinks.py to make it executable and you're good to go.

Asha · wrote on 23 Sept 2019, 10:03

This post is deleted!

Asha · wrote on 23 Sept 2019, 11:15

This post is deleted!

Asha · 23 Sept 2019, 12:08

@Ketank16

Hi,

I followed the same as you said,when I am trying to run

./Sysroot-relativelinks.py sysroot

getting Output:

/usr/bin/env: 'python': No such file or directory

while getting this can I processed next?

Pablo J. Rogina · 23 Sept 2019, 12:48

@Asha said in How to copy cross-compiled Qt binaries from one computer to another:

while getting this can I processed next?

No. Install python in your host PC and repeat the step. Only when it succeeds you can go on.

Asha · 23 Sept 2019, 15:35

@Pablo-J-Rogina

Thankyou for the replay,

I installed python via

sudo apt-get install python3

when I am given the command like

python3

getting result Python 3.6.8

but after this,, executing the ./sysroot-relativelinks.py sysroot but getting the same result, No such file or directory....

Asha · wrote on 23 Sept 2019, 13:24

Hi,

I seen where python3 is installed with the following command

which python3

the output is
/usr/bin/python3

so in sysroot-relativelinks.py file I edited the first line

#!/usr/bin/env python to #!/usr/bin/python3

After this again I executed the sysroot-relativelinks.py

now it is executed...what I did is it correct?...Thankyou...

Ketank16 · 24 Sept 2019, 05:00

@Asha You are supposed to have python2 (not python3) package. Ubuntu should automatically install python2 packages when you execute sudo apt install python.
Anyways for such a small script, I don't think its gonna make a difference but please remeber python package is python2 in Ubuntu repos and python3 is well python3 itself.

Asha · wrote on 24 Sept 2019, 05:00

@Ketank16

Hi,

While configuring I am getting this error,please go through this, here is the attachement

How to proceed next..

Asha · wrote on 24 Sept 2019, 05:30

Hi,

Any suggestions...please

Asha · wrote on 24 Sept 2019, 06:39

@Ketank16

Hi,

Please guide me,what mistake I am doing?...

Asha · 25 Sept 2019, 05:54

I gone through some websites,
about this error

You dont seem to have make or gmake in your path.

I export MAKE=/usr/bin/make

after this tried for configuration,getting

guys,please suggest me ho w to proceed next...thankyou