QtCreator

Latest revision as of 11:41, 6 March 2010

[edit] Introduction

I created a project called "OpenMokoder" which should help to develop Qt4 projects for freerunner. You only need to copy your sourcecode or use the included sample project run the script and you can easy compile, debug, crosscompile, package your project with Trolltechs QtCreator. QtCreator is a very good lightweight Qt IDE with features like embedded Qt Designer, Code completion, debugging, svn, ...

Note:

• This tutorial is tested with Om2009 (but should work with SHR/FSO too)
• The installation process is tested with Kubuntu 8.10 (Jaunty)

[edit] Install Toolchain

First of all you have to install the toolchain. If you have already done this skip this step. I will just give a summary of how to do that for copy paste the detailed information can be found at Toolchain

sudo apt-get install gcc g++ autoconf automake binutils libtool libglib2.0-dev ccache libxrender-dev intltool libmokoui2-dev libgconf2-dev mtools fakeroot alien check uboot-mkimage libcurl3 libqt4-dev

Unfortunately the libtool since Ubuntu(intrepid) doesnt't work with the toolchain so you have to install the one from Ubuntu(Hardy)

• deinstall libtool from intrepid/jaunty

 sudo apt-get remove libtool

• download libtool from hardy (http://packages.ubuntu.com/de/hardy/libtool)

 wget  http://ftp.sjtu.edu.cn/ubuntu/pool/main/libt/libtool/libtool_1.5.26-1ubuntu1_i386.deb

or

 wget  http://ftp.sjtu.edu.cn/ubuntu/pool/main/libt/libtool/libtool_1.5.26-1ubuntu1_amd64.deb

• and install it

 sudo dpkg -i libtool_1.5.26-1ubuntu1_i386.deb
 rm libtool_1.5.26-1ubuntu1_i386.deb

• download the compressed tarfile containing the cross-compilation toolchain

mkdir ~/sources
cd ~/sources
wget http://downloads.openmoko.org/developer/toolchains/openmoko-i686-20090323-armv4t-linux-gnueabi-toolchain-openmoko.tar.bz2

• either just extract the tarball, it installs (only) to /usr/local/openmoko

 cd /
 sudo tar -xjvf ~/sources/openmoko-i686-20090323-armv4t-linux-gnueabi-toolchain-openmoko.tar.bz2

• or build a debian package with alien and install it

 bunzip2 openmoko-i686-20090323-armv4t-linux-gnueabi-toolchain-openmoko.tar.bz2
 gzip openmoko-i686-20090323-armv4t-linux-gnueabi-toolchain-openmoko.tar
 fakeroot alien -d openmoko-i686-20090323-armv4t-linux-gnueabi-toolchain-openmoko.tar.gz
 sudo dpkg -i openmoko-i686_20090323-2_all.deb

• Change permissions of toolchain that scripts don't need root rights. REPLACE <your-name> (in general with your username)

sudo chown -R <your-name>.<your-name> /usr/local/openmoko/arm

[edit] Configure Toolchain

• Install important packages in toolchain

. /usr/local/openmoko/arm/bin/setup-env
opkg-target update
opkg-target install libpng12-0 libpng12-dev libgcc1 libglib-2.0-0 libgmodule-2.0-0 libgobject-2.0-0 libgthread-2.0-0 libpng-dev libpng3  libxrender-dev libxrender1 libxrandr-dev libxrandr2 libfontconfig-dev libfontconfig1 

• Add Angström Repo and QT4.5 libs to toolchain

echo arch base 50 >> /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/etc/opkg.conf
echo src/gz base http://www.angstrom-distribution.org/feeds/unstable/ipk/glibc/armv4t/base/ >>/usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/etc/opkg.conf
opkg-target update

opkg-target install libgcc1 libglib-2.0-0 libgmodule-2.0-0 libgobject-2.0-0 libgthread-2.0-0 libpng12-0 

• install with force depends

opkg-target -force-depends install qt4-x11-free qt4-x11-free-dev

• If not done yet install qt sources on Host

sudo apt-get install libqt4-dev

• Check if qmake is linked to qt4 like this

qmake -v

it should look like this

QMake version 2.01a
Using Qt version 4.5.0 in /usr/lib

if it is linked to qt3 do the following:

sudo rm  /usr/bin/qmake
sudo ln  /usr/bin/qmake-qt4 /usr/bin/qmake

[edit] Configure Freerunner

[edit] If Qt libs are not in the feeds

You should NOT install the whole qt4-x11-free metapackage, because it has dependencies which are not compatible and the Freerunner doesn't boot anymore. Because of this we install the libs without the dependancies:

echo arch base 50 >> /etc/opkg/angstrom-feed.conf
echo src/gz base http://www.angstrom-distribution.org/feeds/unstable/ipk/glibc/armv4t/base/ >> /etc/opkg/angstrom-feed.conf
opkg update
opkg -nodeps install libqtgui4
opkg -nodeps install libqtcore4
opkg -nodeps install libqtdbus4
opkg -nodeps install libqtxml4
opkg -nodeps install libqttest4
rm -f /etc/opkg/angstrom-feed.conf
opkg update

You may need more Qt4 libs, you can install them the same way.

[edit] Install QTCreator

• download binary from:

http://www.qtsoftware.com/downloads/

• easy install via: (Filenames will change)

 chmod +x qt-creator-linux-x86-opensource-1.1.0.bin
 sudo ./qt-creator-linux-x86-opensource-1.1.0.bin

[edit] Method 1: OpenMokoder

• OpenMokoder is just a set of folders that contain some scripts, templates and the sample project.

• Install subversion

sudo apt-get install subversion

• Checkout (remember these are only scripts you do not have to compile anything)

svn checkout svn://svn.projects.openmoko.org/svnroot/openmokoder

or

svn checkout https://svn.projects.openmoko.org/svnroot/openmokoder

• Make all scripts executable

cd openmokoder/scripts/
chmod +x *.script
cd ..
chmod +x *.script

• If your Freerunner has another Ip than 192.168.0.202 please change it in copy.script start.script and packaging.script in the scripts folder

• For the first try I would recommend to use the included sample project

• Run Script

./CreateProject.script sampleproject

• Now switch to Folder /Openmokoder/sampleproject/QtCreator and open the file SampleProject.pro with QtCreator for example by doubleklick
• If you click on "Projects" on the left of QtCreator U should see something like this. In the new QtCreator 1.1 you have to do a right click on the white area to see the "build settings".

• You can see the 3 customized build options

1. Host: Builds the sample project on the host
2. Freerunner: Crosscompiles the sample project and scp to freerunner /usr/bin/
3. Packaging: Packages the sample project and installs the package on the freerunner

[edit] Crosscompiling

• Connect your freerunner to your Computer (if necessary use: sudo /etc/init.d/networking/restart)
• Choose "Freerunner" as Build Settings and start compiling with ctrl+b
• You can watch the build process if you chose "Compile Output" at the bottom right
• Once the build process is finished the test program should start on the freerunner

[edit] Packaging

• (You must have have run "Freerunner" as Build Settings once before)
• Now choose "Packaging" as Build Settings and hit ctrl+b again
• You can watch the build process if you chose "Compile Output" at the bottom right
• Afterwards the package should be installed on your Freerunner
• You should have a new Icon on the Freerunner Desktop

• The different build steps can be turned on and off
• The BuildStep "Freerunner Autotools" is only needed at the first time or when you add a new file and can afterwards be deactivated then the build process is much faster

[edit] Custom Project

If you want to compile your own project just put your Project (It must contain a .pro Poject File) into /Openmokoder/src/ and start

./CreateProject.script projectname

Because the projectname you enter here will also be used for packaging it has to be without capital letters Afterwards continue like with the SampleProject

[edit] Adding Librarys

• Install the libs to the toolchain and don't forget the libXY-dev packages

. /usr/local/openmoko/arm/bin/setup-env
opkg-target install libXY libXY-dev

• Add the Libs to the CreateProject.script and autotools.script. search for the line

echo "$1_LDADD = -lQtDBus -lQtGui -lQtCore " >> temp2.txt

• and add the lib, for example

echo "$1_LDADD = -lQtDBus -lQtGui -lQtCore -lXY " >> temp2.txt

• Add the Libs to the QtCreator Environment

Build Settings -> Build Environment -> LDFLAGS add

-lXY

[edit] Adding Data (pictures, ...)

add file to /openmokoder/YourProjectName/data/ on host and modify /openmokoder/YourProjectName/data/Makefile.in for example:

#
# misc. data files
#
dist_pkgdata_DATA = pic1.png \
                    pic2.png 

Afterwards use build setting packaging

[edit] Customize Icon

Just change the Icon in /data/openmoko-sample.png but use the same filename otherwise the Script must be modified

[edit] Customize Version Number

Don't know how to do that yet feel free to add it here

[edit] What does CreateProject.script do ? (draft)

To be done

[edit] Method 2: Making your own custom QMake mkspec

This method provides a very easy and intuitive way for cross-compiling using a custom QMake mkspec configuration. It uses QMake, so the right libraries are automatically included.

Tested under Ubuntu 9.10

• Make your own mkspec by copying an existing one

sudo cp -rf /usr/share/qt4/mkspecs/linux-g++ /usr/share/qt4/mkspecs/linux-OM-g++

• Edit the qmake.conf file (gnome users can use gedit instead of kate):

sudo gedit /usr/share/qt4/mkspecs/linux-OM-g++/qmake.conf

• Change existing content to this one:

#
# qmake configuration for linux-OM-g++
#

MAKEFILE_GENERATOR	= UNIX
TEMPLATE		= app
CONFIG			+= qt warn_on release incremental link_prl
QT			+= core gui
QMAKE_INCREMENTAL_STYLE = sublib

include(../common/g++.conf)
include(../common/linux.conf)

# modifications to g++.conf 
QMAKE_CC = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/gcc
QMAKE_LINK_C = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/gcc
QMAKE_LINK_C_SHLIB = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/gcc
QMAKE_CXX = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/g++
QMAKE_LINK = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/g++
QMAKE_LINK_SHLIB = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/g++

# modifications to linux.conf 
QMAKE_AR = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/ar cqs 
QMAKE_OBJCOPY = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/objcopy 
QMAKE_STRIP = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/strip
QMAKE_INCDIR_QT = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/usr/include/qt4
QMAKE_LIBDIR_QT = /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/usr/lib

load(qt_config)

• Now use the following build steps:

qmake-qt4 /path/to/your/project/project.pro -r -spec linux-OM-g++
make -w in /path/to/your/project

• Copy the compiled project to your Neo Freerunner

scp /path/to/your/project/project root@192.168.0.202:/usr/bin/.

• Run the project either by using SSH or by using the terminal on your Neo Freerunner

[edit] Successfully tested with...

(Please add information here if the tutorial succeeds)

* Host Kubuntu Jaunty (9.04) Freerunner Om2009 (testing4) / SHR-unstable
* Host OpenGEU Jaunty (9.04) Freerunner SHR-unstable

[edit] Todo

1. Better documentation in the OpenMokoder scripts
2. Add Information here what Createproject.script exactly does
3. Information about other Distributions as well on the Freerunner as on the Host

[edit] Issues

[edit] SSH

• You should be able to connect to your freerunner via SSH else some scripts do not work properly
• Try if

ssh root@192.168.0.202

• works
• The best is using public key authentication that you were not asked for the password

[edit] missing libs

If the following error message appears while compiling:

libstdc++.so.6: cannot open shared object file: No such file or directory

Just install the missing lib

opkg install libstdc++6

[edit] Packaging Problems

if following error message appears in build option packaging:

/usr/local/openmoko/arm/bin/om-make-ipkg ../../$1
.: 10: Can't open /usr/local/openmoko/arm/setup-env

Change path in /usr/local/openmoko/arm/bin/om-make-ipkg on the host from:

/usr/local/openmoko/arm/setup-env

to:

/usr/local/openmoko/arm/bin/setup-env