Qt Extended Improved

Revision as of 18:17, 25 March 2009

Community Resources

Qt Software cancelled the Qt Extended project on 3 March 2009 (Qt Software discontinues Qt Extended). The community created a fork of it and called it Qt Extended Improved:

• bug tracking system
• prebuild rootfs images
• git repository

Installing Qt Extended Improved snapshot on the FreeRunner

Download the kernel and rootfs

Read the instructions about how to flash your freerunner.

Qt Extended Improved uses the latest FSO kernel and rootfs. Download the kernel and rootfs to your workstation prebuilt rootfs images. Boot your FreeRunner in dfu mode and use the dfu commands:

desktop# dfu-util -d 0x1d50:0x5119 -a kernel -R -D  Neo_kernel_Backup_200902212230.bin

    ... stuff ...

desktop# dfu-util -d 0x1d50:0x5119 -a rootfs -R -D  Neo_rootfs_Backup_200902212230.jffs2

    ... more stuff ...

Building the Qt Extended Improved SDK

First download the snapshot from the git repository. Then make the build directory and set the environment variables. In this example, I write the environment variables to a file then I source the file.

mkdir -p /opt/QtExtended/build
cd /opt/QtExtended
tar -xzvf qt-extended-improved.tar.gz
echo "export QTOPIA_DEPOT_PATH=/opt/QtExtended/qt-extended-improved" >> setpaths 
echo "export QPEDIR=/opt/QtExtended/build/" >> setpaths
. setpaths

Install the toolchain:

cd /opt
wget http://qtextended.org/downloads/toolchains/arm920t-eabi.tgz
tar xzvf arm920t-eabi.tgz /

Do the linux three-step: configure, make, make install.

cd $QPEDIR
$QTOPIA_DEPOT_PATH/configure -device neo -D _FORTIFY_SOURCE=0
make
make install
bin/qbuild sdk

The binaries are in the $QPEDIR/image directory. You can copy these to your freerunner over usb like this:

scp -r $QPEDIR/image/* 192.168.0.202:/opt/Trolltech/Qtopia/

Compiling an Example Qt Extended App

First set those indispensable Qt environment variables:

desktop# . /opt/QtExtended/setpaths

Next create a directory /opt/Qtopia/build/myapps. Copy the example app. Rename the example app to something that makes sense (how about "example"!). Create the Makefile and build the example.

desktop# mkdir /opt/QtExtended/build/myapps
desktop# cd /opt/QtExtended/build/myapps
desktop# cp -R $QTOPIA_DEPOT_PATH/examples/application .
desktop# mv application example
desktop# cd example
desktop# $QPEDIR/bin/qbuild

Now you have an executable example. It won't execute on your workstation - you must secure copy it to your FreeRunner. Then secure shell into the FreeRunner, import the Qtopia environment variables and execute the app:

desktop# scp example root@freerunner:/home/root
root@192.168.0.202's password: 
example                                      100%    33KB  33.4KB/s   00:00    
desktop# ssh 192.168.0.202
root@freerunner's password: 
freerunner:~# . /opt/Trolltech/Qtopia/qpe.env 
freerunner:~# ./example

You should see a message on FreeRunner's LCD.