Need help on Cross compiling Qt 5.1.1 on Imx6

clogwog

wouldn't have thought that a g++ compiled program would do anything on the imx6. it's the wrong architecture, so that's not a surprise

what do you see when you do

file /bin/touch
and
ldd /bin/touch

on the imx6 ?

clogwog

perhaps file is not installedo n your imx6 ?
what does it say when you run:

which file

on the imx6 ?

eimarcos

Hi,

when I type (on the imx6)

file /bin/touch it returned :
"command not found"
ldd /bin/touch it returned:
"librt.so.l => /lib/arm-linux-gnueabihf/librt.so.l (0x2acd9000)
libc.so.6 => /lib/arm-linux-gnueabihf/libc.so6 (0x2ace7800)
/lob/ld-linux-armhf.so.3 (0x2abld880)
libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 (0x2ab62000)"

-with "which file" nothing happens

Well I think file is not installed on the imx(as you suggested). how could I install it? I tried to connect it with a network cable and open up the chrome browser(which is built in), it can't browse the net. Also tried to ping my computer, it can't see it in the network. But on the system preference it shows a "wired connection"

And what does this mean?
"wouldn’t have thought that a g++ compiled program would do anything on the imx6. it’s the wrong architecture, so that’s not a surprise_" --- does it imply I used the wrong compiler? should I use a different one? what should I use? Sorry, I'm a little bit confuse on whats happening :-( or just referring to other file I compiled with the standard g++ compiler

eimarcos

Hi,

Well I'm just guessing, could it be possible I'm using a different image for imx6 that making me encounter different errors. If it's not too much to ask, could you give me information what image are you using on your board and where to download it? So I can install and run it to my board. Thanks in advance :-D

eimarcos

Hi,

Who would have thought my hunch was right. I downloaded a different image for imx6 and installed it to the unit. Seems everything is working as expected.

When typing "file mainarm" it displays :

mainarm: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, not stripped

and on "ldd mainarm" shows:

libstdc++.so.6 => /usr/lib/arm-linux-gnueabi/libstdc++.so.6 (0x2acc4000)
libm.so.6 => /lib/arm-linux-gnueabi/libm.so.6 (0x2abea000)
libgcc_s.so.1 => /lib/arm-linux-gnueabi/libgcc_s.so.1 (0x2ab08000)
libc.so.6 => /lib/arm-linux-gnueabi/libc.so.6 (0x2ad6f000)
/lib/ld-linux.so.3 (0x2aae3000)

tried the file by typing "./mainarm", the program works!

So what's next? :-D

clogwog

ah good good.
now here comes the time-consuming part:

take the sd card out and copy everything (cp -r ) from the card to a directory on your local machine. put it somewhere under a directory called rootfs or so
for example /home/erick/projects/rootfs/

this is because the cross compile will be for that particular setup and it needs all the include files and libraries on that card. we will be copying this card a few times as we find out missing libraries (in lib packages) and header files (in lib-dev packages)

go to your qt 5.1.1 source directory and cd into qtbase
then run ./configure

and keep in mind that this will take a while to get right

@cd qtbase
./configure -opensource -confirm-license -icu -qt-xcb -make libs -no-pch -opengl es2 -prefix /opt/qt5.1.1-armel -device-option CROSS_COMPILE=/home/erick/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_GNU_Linux/bin/arm-fsl-linux-gnueabi- -device imx6 -sysroot /home/erick/projects/rootfs/ -no-gcc-sysroot@

and i am expecting a lot of errors, so don't worry yet.

eimarcos

So I assume this will be the hard part and as you said its time consuming, so I better be get started :-D

Before I proceed, can I make one clarification first. On my system, I think theres two qt programs (I'm assuming they are not the same because one is on a qt5 folder and the other is Qt5.1.1)

I got Qt5.1.1 from http://qt-project.org/downloads using the file "Qt 5.1.1 for Linux 32-bit (417 MB) " to install it(which is a GUI installer and I use default setting for installing) which created a folder on my system ( '/home/erick/Qt5.1.1')

I got qt5 from following this procedure:(https://community.freescale.com/docs/DOC-94066)

QT5

These steps are performed on the host

Download the git respository for qt5:

$ git clone git://gitorious.org/qt/qt5.git qt5

$ cd qt5

Let us consider this as <QTDir>
Create a build directory to install for the qt5 packages. This directory can be in any loctation. For example,

$ sudo mkdir /opt/qt5

$ sudo chown -R <username> /opt/qt5

Let us consider the the installdir as /opt/qt5

Enter the Qt5 directory and run the init-repository script to download all the source code for
Qt5. To download all the source code will take about an hour.

$ ./init-repository

Update: In the latest Qt5 release the webkit library is included by default and there are some issues trying to compile it.

use the next line to avoid problems if not desired to use webkit.

$ ./init-repository --no-webkit
===============================================================

which created a folder on my system (/home/erick/qt5).

Now the problem is, you mentioned
"go to your qt 5.1.1 source directory and cd into qtbase
then run ./configure"

I can't find "configure" file nor the "qtbase" folder on the Qt5.1.1 folder. But it can be found on the qt5 folder (both the qtbase folder and configure file). Logically, I should pick the qt5 folder because it has the component, and run configure (right?) Would it be a problem in the future (assuming I got the correct configuration), that I have only an installation of qt creator for Qt5.1.1 and not for qt5? Can't find also qtcreator on the qt5 folder :-(

on a side note:

both folders(Qt5.1.1 and qt5) contains the files "qeglfshooks_imx6.cpp, qmake.conf, and qplatformdefs.h" though in different paths.

on the qt5 folder it can be found on '/home/erick/qt5/qtbase/mkspecs/devices/linux-imx6-g++'

on the Qt5.1.1 folder it can be found on '/home/erick/Qt5.1.1/5.1.1/gcc/mkspecs/devices/linux-imx6-g++'

I know this is quite a reading, and I do apologize. I just want you to a have a big and clear picture of what's going on over at my part. I really do appreciate the time and effort your putting out in order to help me. Again, Thank you very very much :-D

clogwog

the binary (GUI) installer was for your local machine ( intel 32 bit) so we'll ignore that one, we need the sources

after you do a
git clone git://gitorious.org/qt/qt5.git qt5

and look in the qtbase directory, you'll probably see that it is completely empty.. they (recently ?) split up all the subprojects into stand alone git projects...
so just go to the /opt/qt5 directory (do a "git pull" to get the latest version )
then also checkout qtbase
git clone git://gitorious.org/qt/qtbase.git

after that you should see the configure script appear in qtbase.

eimarcos

Ok got it. Ignorning the GUI installed qt.

git clone git://gitorious.org/qt/qt5.git qt5 - DONE
and yes the '/home/erick/qt5/qtbase' folder is empty.

entered the directory /opt/qt5 folder,
did "git clone git://gitorious.org/qt/qtbase.git". And now I can see a "configure" file and "configure.bat" file in the directory under /opt/qt5/qtbase.

should I do these now:

cd qtbase
./configure - opensource - confirm-license - icu - qt- xcb - make libs - no-pch - opengl es2 - prefix /opt/qt5.1.1-armel - device-option CROSS_COMPILE=/home/erick/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_GNU_Linux/bin/arm-fsl-linux-gnueabi- -device imx6 -sysroot /home/erick/projects/rootfs/ -no-gcc-sysroot

how about "-prefix /opt/qt5.1.1-armel -device-option" I assume its pertaining to a directory in which I know I don't have. Or should I just type everything as you instructed.

clogwog

-prefix /opt/qt5.1.1-armel

is where the make install (at the end of all this) will install your cross-compiled qt (on your rootfs )

additional it is also where the make install will install the qmake on your local machine that you will need for cross-compiling

it doesn't matter what you call it, i just called it qt5.1.1-armel because i also have natively compiled versions of qt on my disk, this way i know which is which.

isn't it working ?

eimarcos

Currently copying files from the sd card to the host compuater. I'm having a problem with limited storage on my drive. Would it matter if instead I copy it to "/home/erick/projects/rootfs/" I would put it to an additional drive. the path would be "/media/erick/Development-Files/iMx6Files/rootfs' then I would put it as the sysroot directory when Im in the configuring procedure?

eimarcos

I have run the configure file almost exactly the same as your parameters except with the directory path for sysroot. I have encountered this error:

"Running configuration tests...
Failed to process makespec for platform 'devices/linux-imx6-g++'
Turn on verbose messaging (-v) to see the final report."

As you expected :-D

eimarcos

hi,

I managed to fix the the first error problem, but another error showed up. It shows "Could not dertemined target architecture". What could that be? I have no clue :-(

Here's the complete error message:

This is the Qt Open Source Edition.

You are licensed to use this software under the terms of
the Lesser GNU General Public License (LGPL) versions 2.1.

You have already accepted the terms of the license.

<srcbase> = /opt/qt5/qtbase
<outbase> = /opt/qt5/qtbase
Creating qmake...
make: Nothing to be done for `first'.
Running configuration tests...
Note: PKG_CONFIG_LIBDIR automatically set to /media/erick/Development-Files/iMx6Files/rootfs/usr/lib/pkgconfig:/media/erick/Development-Files/iMx6Files/rootfs/usr/share/pkgconfig:/media/erick/Development-Files/iMx6Files/rootfs/usr/lib/arm-none-linux-gnueabi/pkgconfig
Note: PKG_CONFIG_SYSROOT_DIR automatically set to /media/erick/Development-Files/iMx6Files/rootfs

Could not determine the target architecture!
Turn on verbose messaging (-v) to see the final report.
The ICU library support cannot be enabled.
Turn on verbose messaging (-v) to ./configure to see the final report.
If you believe this message is in error you may use the continue
switch (-continue) to ./configure to continue.

Soilworker

Hello,

just wanted to share my experience with wandboard-dual iMX6 and Yocto.

The easiest way would be to just take Yocto to build your image with QtEmbedded. Freescale is delivering the following layer to add support
https://github.com/Freescale/fsl-community-bsp-base for a couple of development boards. Even if you don't use the image itself, you will find the proper configuration to configure and cross compile Qt for the iMX6.

So just building an image for one of the supported iMX6 development boards, and look in the log-files what bitbake did in the background would propably help you to get it running for your board as well.

Kind Regards
Soilworker

tunahammer

So I'm having the same problem with 5.2.1 using either the codesourcery or linaro toolchains.

My friend and I have spent 7 hours together trying to build Qt so we can finish a project and we have searched and searched. ANY help would be so appreciated!

using
Sourcery CodeBench Lite 2013.11-33
gcc-linaro-arm-linux-gnueabihf-4.8-2014.03_linux.tar
qt-everywhere-opensource-src-5.2.1

@./configure -opensource -confirm-license -qt-xcb -make libs -no-pch -opengl es2 -prefix /opt/Qt5.2.1 -device-option CROSS_COMPILE=/opt/CodeSourcery/G++Lite/bin/arm-none-linux-gnueabi- -device imx6 -sysroot /opt/rootfs -no-gcc-sysroot@

@./configure -opensource -confirm-license -icu -qt-xcb -make libs -no-pch -opengl es2 -prefix /opt/Qt5.2.1 -device-option CROSS_COMPILE=/opt/Linaro/bin/arm-linux-gnueabihf- -device imx6 -sysroot /opt/rootfs -no-gcc-sysroot@

This is the Qt Open Source Edition.

You are licensed to use this software under the terms of
the Lesser GNU General Public License (LGPL) versions 2.1.

You have already accepted the terms of the license.

Creating qmake...
make: Nothing to be done for `first'.
Running configuration tests...
Warning: Disabling pkg-config since PKG_CONFIG_LIBDIR is not set.
Note: PKG_CONFIG_SYSROOT_DIR automatically set to /opt/rootfs

Could not determine the target architecture!
Turn on verbose messaging (-v) to see the final report.
The OpenGL ES 2.0 functionality test failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR_OPENGL_ES2, QMAKE_LIBDIR_OPENGL_ES2 and QMAKE_LIBS_OPENGL_ES2 in
/opt/Qt5/qtbase/mkspecs/devices/linux-imx6-g++.

Soilworker

Hi there,

I just want to let you know, that I was able to compile QT 5.2.0 a couple a month ago with Yocto (dora) and the additional meta-qt layer. You have to get the jansa-branch of that layer. With that I was able to compile the above version and I guess Mr. Jansa already adapted it for the latest Qt Version as well.

Of course this solution implies a bit of a knowledge of the yocto build system itself. But if you follow this guide:

http://wiki.wandboard.org/index.php/Building_Qt5_using_yocto_on_Wandboard

and adapt it to your target board (in case your board is supported by Yocto), this would propably the easiest way to get it running.

Kind Regards

Soilman

tunahammer

I changed my configure to

@/opt/gitQt/qt5/qtbase/configure/ -opensource -confirm-license -qt-xcb -make libs -no-pch -opengl es2 -prefix /opt/Qt5.2.1 -device-option CROSS_COMPILE=/opt/Linaro/bin/arm-linux-gnueabihf- -device imx6 -sysroot /opt/rootfs -no-gcc-sysroot -developer-build -no-gtkstyle -xplatform linux-arm-gnueabi-g++@

and that got rid of the target architecture error...

Now this remains:

@Warning: Disabling pkg-config since PKG_CONFIG_LIBDIR is not set.
Note: PKG_CONFIG_SYSROOT_DIR automatically set to /opt/rootfs
The OpenGL ES 2.0 functionality test failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR_OPENGL_ES2, QMAKE_LIBDIR_OPENGL_ES2 and QMAKE_LIBS_OPENGL_ES2 in
/opt/gitQt/qt5/qtbase/mkspecs/linux-arm-gnueabi-g++.
@

tunahammer

edit: stupid question...

Soilworker

Hi tunahammer,

before I started to compile Qt with the help of Yocto, I was trying it in the same you are currently doing and I ran into the same issue.

To make this error disappear, I had to specify inside the make-spec the path to the includes and the library of opengl inside my target sysroot.

After that I was able to get one step further.

Kind Regards
Soilman

tunahammer

It appears the manufacturer does not include the correct files for opengl in their sysroot for this device. Am I correct in thinking I need to download the source and compile a version of opengl es2 or is this generic enough that I could try to find someone else with a project with these for an imx6 and use theirs?