Creating a MADDE target for MeeGo Tablet

Hii again.

After spending a swingful easter, found a spot to try out creating a new MADDE target for MeeGo tablet (the same stuff applies to any target).

The basis for these notes are in MeeGo wiki. Following text describes creating a new MeeGo target image and integrating it into MADDE. Please refer to the wiki for further details. Also note that I’m not creating a runtime at all, so this post mainly applies to devs having some MeeGo hardware at hand. Again, the wiki explains about runtime installations too (& the process is not that different).

First, get kickstarter. It’s a tool which creates kickstart files from MeeGo image configurations. MeeGo Image Creator (MIC) eats those kickstart (.ks) files and pops out fresh MeeGo images. I’ll assume you’ve got MIC already installed.

So, get the kickstarter, build it and install. Then clone the MeeGo image configurations repo.

git clone git://gitorious.org/meego-developer-tools/kickstarter.git
cd kickstarter
sudo python setup.py build
sudo python setup.py install

git clone git://gitorious.org/meego-os-base/image-configurations.git

Next, navigate to the image configurations and create the kickstart files:

cd image-configurations

kickstarter -c configurations.yaml -r repos.yaml

The new kickstart files appear under a folder called 1.1.90 (in the time of writing). Go to that folder and run MIC with the following command:

sudo mic-image-creator –config=tablet-ia32-madde-sysroot.ks –format=fs –compress-disk-image=none –package=tar.bz2 –release=latest

You should get a MeeGo Tablet sysroot image under a subdirectory tree ./latest/images/meego-tablet-ia32-madde-sysroot. Copy the image found under that path into /usr/lib/madde/cache. Then, let’s create MADDE config files for the target. MADDE keeps the target config files under /usr/lib/madde/linux-i686/cache/madde.conf.d. In there, create a file called meego-tablet.conf with the following contents:

require meego-core-ia32-latest

target meego-tablet
    sysroot meego-tablet-ia32-madde-sysroot-latest-fs.tar.bz2
    toolchain meego-sdk-i586-toolchain-1.1
    runtime meego-netbook-ia32-qemu-1.1.20101031.2037-sda-runtime
    ccxopts -m32 -march=core2 -mssse3  -mtune=atom -mfpmath=sse
    qttools qt-tools-4.7.0
    arch i586
    os Linux
end

Also, create a file called meego-core-ia32-latest.conf with this stuff inside it:

require meego-core-ia32-1.1

target meego-core-ia32-latest
    sysroot meego-core-ia32-madde-sysroot-1.1.99.4.20110426.4-fs.tar.bz2
    toolchain meego-sdk-i586-toolchain-1.1
    runtime meego-handset-ia32-1.0.80.9.20100706.1-sdk-pre0901-runtime
    ccxopts -m32 -march=core2 -mssse3 -mtune=atom -mfpmath=sse
    qttools qt-tools-4.7.0
    arch i586
    os Linux
end

file meego-core-ia32-madde-sysroot-1.1.99.4.20110426.4-fs.tar.bz2
    url http://mirrors.kernel.org/meego/builds/trunk/1.1.99.4.20110426.4/images/meego-core-ia32-madde-sysroot/meego-core-ia32-madde-sysroot-1.1.99.4.20110426.4-fs.tar.bz2
end

At this point, calling mad-admin should show meego-tablet in the list of installable targets. Next we install the target:

sudo mad-admin create -f meego-tablet

That’s it, now there should be a fresh tablet target installed in MADDE. Mad-admin doesn’t seem to have an update command, so the most straightforward way to update a target is to get those conf files, modify their content, get the latest sysroot image e.g. from

http://mirrors.kernel.org/meego/builds/trunk/latest/images/meego-tablet-ia32-madde-sysroot/

and then create a new target & remove the old.

That’s all, folks.

MeeGo SDK, I presume?

Finally. On the aftermath of MeeGo Summit FI (which was great!), managed to find some time for getting to know and trying out the MeeGo SDK on Linux. There’s a subtle possibility that having an ExoPC has something to do with a sudden appearance of extra hacking time. Decided to put down some notes in case somebody else might find them useful.

Starting point:

Installing the SDK

The first step was to install the MeeGo SDK, and having the meego-sdk metapackage available for Ubuntu (among other supported distros) made the installation rather straightforward. See the SDK instructions for details, it’s just add repo -> get the PGP key -> update repos -> install meego-sdk.

Target setup

When the SDK was installed, it was time to move into creating a target for compiling things for MeeGo. In the SDK, there are targets, and runtimes. A target contains the toolchain and libraries for a MeeGo environment, and a runtime is the OS image which can run the compiled applications on the PC using QEMU. As there was hardware available, I only used the target.

Actually can’t remember if the SDK installation set up the meego-netbook target ready on the first install, but let’s now just assume it didn’t.

Installed and installable targets can be shown with mad-admin list, and the output is something like this:

Targets:
fremantle-pr13              (installable)
maemo412-1                  (installable)
meego-core-armv7l-1.1       (installable)
meego-core-armv7l-1.1.2     (installable)
meego-core-armv7l-trunk     (installable)
meego-core-ia32-1.1         (installable)
meego-core-ia32-trunk       (installable)
meego-handset-ia32-1.1.2    (installable)
meego-handset-ia32-1.1      (installable)
meego-handset-ia32-w32-1.1  (installable)
meego-handset-ia32-trunk    (installable)
meego-netbook-ia32-1.1.2    (installable)
meego-netbook-ia32-1.1      (installed)
meego-netbook-ia32-w32-1.1  (installable)
meego-netbook-ia32-trunk    (installable)

For the case of ExoPC, I selected the meego-netbook-ia32-1.1. Tried meego-netbook-ia32-trunk too, but that wasn’t working, only got this:

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 –:–:– –:–:– –:–:–     0
Warning: Transient problem: FTP error Will retry in 1 seconds. 5 retries left.
  0     0    0     0    0     0      0      0 –:–:– –:–:– –:–:–     0
Warning: Transient problem: FTP error Will retry in 2 seconds. 4 retries left.
  0     0    0     0    0     0      0      0 –:–:– –:–:– –:–:–     0
Warning: Transient problem: FTP error Will retry in 4 seconds. 3 retries left.

So, target was installed with sudo mad-admin create -f meego-netbook-ia32-1.1. This downloaded the target contents and set them up under /usr/lib/madde/linux-i686/targets/meego-netbook-ia32-1.1. That folder contains some necessary tools, such as qmake, and Qt libs. There’s also a file called information which shows the building blocks of the target:

sysroot meego-core-ia32-madde-sysroot-1.1-fs
toolchain meego-sdk-i586-toolchain-1.1-linux_i686
runtime meego-netbook-ia32-qemu-1.1.20101031.2037-sda-runtime
qttools qt-tools-4.7.0-linux_i686
os Linux
arch i586

That sysroot can be found under /usr/lib/madde/linux-i686/sysroots/ and the toolchain is in /toolchains directory under linux-i686.

Qt Creator configuration

Now that the target was setup, and meego-sdk-qtcreator was present, it was time to launch it. First step, is to set the Qt path, see section “Configuring Qt Creator to use the MeeGo toolchain(s)” in the SDK wiki page. Now that Qt is found, apps can be compiled for the tablet \o/.

Configuring the ExoPC for deployment/debug support

For this to work, you’ve got to have the host PC and the tablet in the same network, WLAN being the most obvious choice. The tablet has an SSH daemon running from the boot and the IP address can be viewed in the WiFi Settings screen. (Pssst: Password for root&meego users is meego).

In the MeeGo Qt Creator, go to Tools->Options->Projects->MeeGo Device Configurations. Settings needed:

  • Authentication type: Password
  • Host name: <ExoPC’s IP> <– TODO: Configuring a static IP for the tablet
  • Username: root
  • Password: meego

Also deployed a public SSH key to the ExoPC, but for some reason the connection is just failing after that with “Device configuration test failed: Could not connect to host.”.

After the settings are done, click Apply and then click Test to see if everything is working. You should see a dialog saying “Device configuration successful” and info about the kernel version & installed Qt packages.

Time to compile some software!

For the first testrun, I chose the fingerpaint example found in Qt 4.7 under Examples/4.7/touch/fingerpaint. Open the project, and choose the Qt version you set up above as the build target.

For deployment to the device, see the Projects tab, and select the freshly setup Device Configuration in the Run configuration under the MeeGo build target.

There was one thing i had to customize: at least for the fingerpaint example, the RPM package which is created by Qt Creator tries to find the binary in /usr/local/bin, and starting the application fails via the run button (The green Play button). To make it work, go to the Projects tab again, and edit the Build configuration. Change the Create Package Step. Click Details and change the Remote File Path to /usr/share/qt4/examples/touch/fingerpaint/fingerpaint.

Now clicking the Run button should bring up this:

Since the device configuration has been done and deployment works, also on-device-debugging is rolling on nicely.

That’s all this time, happy hacking!