Development with Eclipse

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A graphical Openmoko application is a gnome-based X application. Hence it is usually easy to build, run and debug it as program for the desktop computer, uploading to the mobile phone only for the final stage of debugging. Even from the mobile phone, it is possible execute the program on the phone and still use the screen, mouse and keyboard of the desktop computer to observe its work. This article describes instructions for Debian, but they will likely work with any non broken Linux distribution.

Eclipse recently has the C/C++ development plug-in. You will need the recent Eclipse, this plug-in and you may need to upgrade the GTK development packages. The easiest way to get the simple application running is to create the managed C project and add `pkg-config --cflags --libs gtk+-2.0` both to the compiler options and to linker flags. After that, go to GTK tutorial and try, using it, to compose a simple application.

This approach not only shortens development cycle from minutes to seconds, but also allows to use the Eclipse debugger for C development, stepping through the code and watching variables.

The executable for the mobile phone can usually be produced from the same source files using the Openmoko toolchain. As all surroundings of these files for Eclipse and Openmoko project are not the same, the most straightforward approach is just to set two development environments and put the symbolic links of the source files into the Openmoko project directory.

After producing the Openmoko executable, it may be reasonable to try it via X, using the keyboard, mouse and screen of the desktop computer. All you need is to use the -X option in the ssh command when you log in into the connected mobile phone. After that, you should be able to run the application inside the phone but have its X window on a screen of the desktop machine. This way you can check the actual execution speed and have access to the mobile phone devices that are not present on PC.

Eclipse allows to add the custom builder to the project. These builders can be either Ant scripts or the executable shell scripts. These possibilities can be used to force the Openmoko toolchain to produce the phone executable without leaving the Eclipse IDE.


Set up Freerunner build Config

  1. install Toolchain
  2. open 'Properties' for your C or C++ Project
  3. select 'C/C++ Build'->'Tool Settings'
  4. click on 'Configuration'->'Manage' and create new configuration eg. Freerunner (copy settings from 'Relase' configuration)
  5. change GCC C||C++||Assembler Compiler command to /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/gcc||g++||as
  6. change GCC Linker Command to /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/gcc (g++ for C++ project)
  7. go to 'Build Steps' and add ". /usr/local/openmoko/arm/setup-env" to 'Pre-build step'
  8. click Ok and select 'Freerunner' in 'Active Build Configuration' for your Project

Notes about Eclipse Ganymed (3.4)

There are three places where you have to change settings as above in Project Properties -> C/C++ Build -> Settings -> Tool Settings

  1. GCC C Compiler -> Command: /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/gcc
  2. GCC C Linker -> Command: /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/gcc
  3. GCC Assembler -> Command: /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/gcc||g++||as

--Perty 20:22, 18 September 2008 (UTC)

You can copy your binary to Freerunner by adding Post-Build command in 'Build Steps' eg.

scp ${project_name} root@neo:/home/root/dev_app/

or you can Run you application on Freerunner by adding Run configuration

C/C++ Application: /usr/bin/ssh Arguments: root@neo "cd dev_app && DISPLAY=:0 ./${project_name}"

--PipBoy2000 22:30, 9 September 2008 (UTC)

Set up Eclipse for development with Qt4

On the 8 of November it seems that its not working

This method has been tried on various distributions and it didn't worked, if you get it working please tell how you've done it and remove this message ... If you have others method to cross compile for the 2008.x in Qt4/c++ let us know !

I realized this with Xubuntu Hardy in an VirtualBox and using it to compile binaries for FSO and now SHR.

So it's possible to upload it somewhere for everyone. Do somebody know where?? Havn't tried to compile ipk-packages with this method, just binaries. What exactly didn't work? If somebody has questions just ask on the Community Mailing list, I'll try to help.

yes, it should be great if you share you virtual machine ... we have to find a place ! I'm now developing under debian (who has every development libraries ), waiting a way to compile for FSO

Set up Environment with Libraries

  • install Eclipse with C/C++ development plug-in
  • add the Anstrom Repository to the Host-toolchain and also to the FreeRunner
    • add Anstrom Repository to Host-toolchain:
echo arch base 50 >> /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/etc/opkg.conf
echo src/gz 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 libqt3support4 libqtassistantclient4 libqtclucene4 libqtcore4 libqtdbus4 libqtdesigner4 libqtdesignercomponents4 libqtgui4 libqthelp4 libqtnetwork4 libqtscript4 libqtsql4 libqtsvg4 libqttest4 libqtxml4 libstdc++6 qt4-assistant qt4-common qt4-dbus qt4-demos qt4-designer qt4-fonts qt4-linguist qt4-pixeltool

opkg-target install qt4-x11-free-dev qt4-designer qt4-assistant // doesn't work there are some depency problems with x11-free packages so all the libs must be installed seperately (next line)

opkg-target install libqt3support-dev libqtassistantclient-dev libqtclucene-dev libqtcore-dev libqtdbus-dev libqtdesigner-dev libqtdesignercomponents-dev libqtgui-dev libqthelp-dev libqtnetwork-dev libqtscript-dev libqtsql-dev libqtsvg-dev libqttest-dev libqtuitools4-dev libqtxml-dev libglib-2.0-dev
  • Add Qtlibs also to the FreeRunner :
opkg update
opkg -force-depends install
opkg -force-depends install
opkg -force-depends install
opkg -force-depends install

Configure Eclipse Project

Project - right click - Properties --> C/C++ Build -- Tab "Tool Settings"

Configuration: Debug

  • GCC c++ compiler -> Directories --- add
  • GCC C++ Linker -> Libraries ---add
    • Libraries (-l):
    • Library search path (-L):
    • On Gentoo: /usr/lib/qt4

Configuration: Freerunner

Project - right click - Properties --> C/C++ Build -- Tab "Tool Settings"

create Configuration "Freerunner": click on 'Configuration'->'Manage' and create new configuration eg. Freerunner (copy settings from 'Relase' configuration)

  • GCC C++ Compiler
    • Command: /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/g++
  • GCC C++ Compiler -> Directories
  • GCC C++ Linker
    • Command: /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/g++
  • GCC C++ Linker -> Libraries --- add
    • Libraries (-l):
    • Library search path (-L):
  • GCC Assembler
    • Command: /usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/bin/as

go to Tab 'Build Steps' and add ". /usr/local/openmoko/arm/setup-env" to 'Pre-build step'

workaround to deal with .ui files from Qt-Designer

mayby somody has a better solution please correct!!

Create a project with properties as mentioned above. To Compile your project create a bash-file in your Project-Folder (sed commands are necessary if you're using QtDbus libraries):

make clean
rm Makefile.sed*
qmake-qt4 -project
sed 's/INCPATH       =/INCPATH       = -I\/usr\/include\/qt4\/QtDBus/g' Makefile > Makefile.sed1
sed 's/LIBS          = $(SUBLIBS)/LIBS          = $(SUBLIBS) -lQtDBus/g' Makefile.sed1 > Makefile.sed2
cp Makefile.sed2 Makefile

Run it...then compile your project with Eclipse Configuration "Freerunner"

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