Get Qt example running on SAM9N12

SGaist · wrote on 27 Apr 2015, 20:55

Hi and welcome to devnet,

Did you cross-compile Qt for your board ? If so, the just call the qmake from that version of Qt to build your project

Bizer · wrote on 28 Apr 2015, 05:58

I have a cross-compiled Qt-Version from buildroot.org on the Evaluation-Board, but it doesn't know the qmake command, sadly...

Bizer · wrote on 28 Apr 2015, 11:47

Well i didn't see this post: https://forum.qt.io/topic/52546/tuto-build-qt-to-cross-compile-for-arm/2
I'll give it a try!

Bizer · wrote on 29 Apr 2015, 19:45

HI, sorry to bother you again. I crosscompiled everything like explained:https://forum.qt.io/topic/52546/tuto-build-qt-to-cross-compile-for-arm/2

With the qtcreator 5.4.1 i choose at build&run the libaries for qt4.8.5 und arm-linux-gnueabihf-g++ . If i run it everything gets compiled, no errors occure.

Then i copied the files to a usb stick and try to run it from the usb-stick with: ./example -qws linuxfb but something with bash sh occures... I also tried chmod but nothing changed.

Two questions:

list itemThe rest of the board software is compiled with CROSS_COMPILE=arm-none-eabi- : Do i have to compile qt also with arm-none-eabi- or should gcc-linaro-arm-linux-gnulist itemeabihf- also work?
Does the qtcreator also needed to be crosscompiled?

SGaist · wrote on 29 Apr 2015, 21:16

What exact error are you getting ?

Unless you plan to run Qt Creator on your board, no

Bizer · wrote on 30 Apr 2015, 14:30

On board the board: -sh: ./example: not found
http://www.bilder-upload.eu/show.php?file=c3cb1b-1430404583.jpg

SGaist · wrote on 30 Apr 2015, 23:14

What does file example return ?

Bizer · wrote on 1 May 2015, 09:36

On the SAM9N12-Linux "file" is not installed but on ubuntu(compiling PC) it says:
benephil: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.1.1, BuildID[sha1]=00493b39dc19cde81d1b1ac906499c24698e97f4, not stripped

SGaist · wrote on 1 May 2015, 23:28

Good, but the thing is, it doesn't seems that the file is copied over to the target

Bizer · wrote on 2 May 2015, 09:05

Sorry, I don't get it. What do you meen?
I copied the folder with the crosscompiled files from my PC to a usb-stick, mounted the usb-stick on the Evaluationboard and tried to run the example.

SGaist · wrote on 2 May 2015, 19:51

Then that's normal, the libraries can't be found, you should write a little bash script that setups the environment for your application to run. Have a look at the Linux Deployment Guide for more details about this

Bizer · 5 Mar 2015, 10:58

Ok so i probably have some libary issues... With crosscompilation everything should be fine? Do i have to write a bash script for those libaries?:

"ldd example"
checking sub-depends for '/usr/lib/libQtGui.so.4'
checking sub-depends for '/usr/lib/libQtNetwork.so.4'
checking sub-depends for '/usr/lib/libQtCore.so.4'
checking sub-depends for '/lib/libpthread.so.0'
ld-uClibc.so.0 => /lib/ld-uClibc.so.0 (0xb6f60000)
libdl.so.0 => /lib/libdl.so.0 (0xb6f54000)
libc.so.0 => /lib/libc.so.0 (0xb6efb000)
checking sub-depends for '/usr/lib/libstdc++.so.6'
checking sub-depends for 'not found'
checking sub-depends for '/lib/libgcc_s.so.1'
checking sub-depends for 'not found'
checking sub-depends for '/usr/lib/libts-1.0.so.0'
checking sub-depends for '/usr/lib/libgthread-2.0.so.0'
checking sub-depends for '/usr/lib/libglib-2.0.so.0'
checking sub-depends for '/usr/lib/libintl.so.8'
checking sub-depends for '/lib/libm.so.0'
libc.so.0 => /lib/libc.so.0 (0xb6ed4000)
ld-uClibc.so.0 => /lib/ld-uClibc.so.0 (0xb6f2d000)
checking sub-depends for '/lib/libc.so.0'
ld-uClibc.so.0 => /lib/ld-uClibc.so.0 (0xb6f4e000)
checking sub-depends for '/lib/libdl.so.0'
libc.so.0 => /lib/libc.so.0 (0xb6ee9000)
ld-uClibc.so.0 => /lib/ld-uClibc.so.0 (0xb6f42000)
checking sub-depends for '/lib/librt.so.0'
libc.so.0 => /lib/libc.so.0 (0xb6eda000)
libdl.so.0 => /lib/libdl.so.0 (0xb6ece000)
libpthread.so.0 => /lib/libpthread.so.0 (0xb6eb2000)
ld-uClibc.so.0 => /lib/ld-uClibc.so.0 (0xb6f33000)
checking sub-depends for '/usr/lib/libiconv.so.2'
libQtGui.so.4 => /usr/lib/libQtGui.so.4 (0x00000000)
libQtNetwork.so.4 => /usr/lib/libQtNetwork.so.4 (0x00000000)
libQtCore.so.4 => /usr/lib/libQtCore.so.4 (0x00000000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00000000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00000000)
libm.so.6 => not found (0x00000000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00000000)
libc.so.6 => not found (0x00000000)
libts-1.0.so.0 => /usr/lib/libts-1.0.so.0 (0x00000000)
libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0x00000000)
libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00000000)
libintl.so.8 => /usr/lib/libintl.so.8 (0x00000000)
libm.so.0 => /lib/libm.so.0 (0x00000000)
libc.so.0 => /lib/libc.so.0 (0x00000000)
libdl.so.0 => /lib/libdl.so.0 (0x00000000)
librt.so.0 => /lib/librt.so.0 (0x00000000)
/lib/ld-uClibc.so.0 => /lib/ld-uClibc.so.0 (0x00000000)
libiconv.so.2 => /usr/lib/libiconv.so.2 (0x00000000)
not a dynamic executable

Bizer · wrote on 3 May 2015, 17:46

Hey, i observed one thing: If i run the project in qtcreator and check the "run in terminal" i get a: "Syntax error: word unexpected (expecting ")") "
Is there something i can/should do about this issue? Because if i run "sh example" i get the same error.

SGaist · wrote on 3 May 2015, 21:12

What distribution is running on your board ?

Bizer · wrote on 4 May 2015, 16:16

At91linux with buildroot-rfs

SGaist · wrote on 4 May 2015, 23:42

Did you install Qt 4 directly through Buildroot ?

Bizer · wrote on 5 May 2015, 13:05

Yes, i did

Bizer · wrote on 6 May 2015, 18:24

no further ideas?

SGaist · wrote on 6 May 2015, 20:23

Did you also cross-compile Qt using the libraries from Buildroot ?

Bizer · wrote on 7 May 2015, 12:21

On the dev machine no, on the evaluationboard yes