Maemo SDK+ installation on Debian (AMD64)

The Maemo SDK+ package includes scratchbox 2 and Qt, but it will only install on 32-bit platforms. If you're running Debian with a 64-bit kernel, Maemo SDK+ can be installed into a chrooted 32-bit environment that sits on top of your 64-bit platform. This guide takes you through all the steps to the point of compilation and running the test.

Building the chrooted platform

All steps in this section are executed as root, directly on the host.

# aptitude install debootstrap
# debootstrap --arch i386 lenny /srv/lenny-ia32 http://ftp.debian.org/debian/
# echo "deb http://maemo-sdk.garage.maemo.org/download/host debian-lenny free" >> /srv/lenny-ia32/etc/apt/sources.list
# aptitude install schroot

# cat >> /etc/schroot/schroot.conf <<EOF
[lenny]
description=Debian lenny
type=directory
location=/srv/lenny-ia32
priority=3
users=<YOUR_USERNAME_HERE!!> (A comma-separated list of users on the host which are allowed access to the chroot)
groups=<YOUR_USER_GROUPNAME_HERE!!> (A comma-separated list of groups on the host which are allowed access to the chroot. probably "users")
root-groups=root
aliases=stable,default
EOF

# eval $(sed -rne '/^(FIRST|LAST)_.ID/p' /etc/adduser.conf)
# USER_LIST=$(sed -e 's/ /,/' <<< $(awk -F: $FIRST_UID'<=$3 && $3<='$LAST_UID' {print $1}' /etc/passwd))
# GROUP_LIST=$(sed -e 's/ /,/' <<< $(awk -F: $FIRST_GID'<=$3 && $3<='$LAST_GID' {print $1}' /etc/passwd))
# echo -e "[lenny]
description=Debian lenny
type=directory
directory=/srv/lenny-ia32
priority=3
users=$USER_LIST
groups=$GROUP_LIST
root-groups=root
aliases=stable,default" >> /etc/schroot/schroot.conf
# echo "export PS1='(lenny)\w \\$ '" >> /srv/lenny-ia32/root/.bashrc

Installing Maemo SDK+

While still logged in as root on the host:

# schroot -c lenny
(lenny)~ #

or

# chroot /srv/lenny-ia32/ /bin/bash
(lenny)/ #

You are now logged in as root in the chrooted environment as root.

(lenny)~ # aptitude update
(lenny)~ # aptitude install maemo-sdk
(lenny)~ # maemo-sdk list available tools
etch
etch-2008
lenny-2009-1
(lenny)~ # maemo-sdk install tools lenny-2009-1
(lenny)~ # maemo-sdk list available toolchains
arm-2005q3
arm-2007q3
i386-2007q3
(lenny)~ # maemo-sdk install toolchain arm-2005q3

As the SDK needs to use sudo to gain root access later, we need to configure sudo:

(lenny)~ # visudo

You will be in an editor session now. Modify the file so that it looks like this (remove the comment sign in front of the last lign):

Defaults	env_reset
root	ALL=(ALL) ALL
%sudo ALL=NOPASSWD: ALL

Now, log out of the schroot section, log out of the root account, and as a normal user on the host, log in to the chroot:

(lenny)~ # logout
# logout
$ schroot -c lenny
(lenny)~ $

You are now logged in as root in to the chrooted environment as a normal (non-root) user.

Now, choose a rootstrap to install:

(lenny)~ $ maemo-sdk list available rootstraps

You get a list of rootstraps

diablo4.1.2_armel
diablo4.1.2_i386
diablo4.1.1_armel
diablo4.1.1_i386
diablo4.1_armel
diablo4.1_i386
fremantle5.0minimal_armel
fremantle5.0minimal_i386
fremantle5.0beta1_armel
fremantle5.0beta1_i386
scirocco2.2_armel
scirocco2.2_i386
mistral2.0_armel

Now, install your desired rootstrap. For example

(lenny)~ $ maemo-sdk install rootstrap diablo4.1.2_armel
(lenny)~ $ sb2 -eR apt-get update
(lenny)~ $ sb2 -eR apt-get install maemo-sdk-runtime maemo-sdk-dev maemo-sdk-dbg

Preparing host for target GUI

As root on the host:

# aptitude install xserver-xephyr

Building Maemopad to test the build environment

As a normal (non-root) user on the host:

$ schroot -c lenny

You are now logged in as root in to the chrooted environment as a normal (non-root) user.

(lenny)~ $ mkdir -p ~/src/mytest
(lenny)~ $ cd ~/src/mytest
(lenny)~/src/mytest $ sb2 -eR apt-get update
(lenny)~/src/mytest $ sb2 apt-get source maemopad
(lenny)~/src/mytest $ cd maemopad-2.4
(lenny)~/src/mytest/maemopad-2.4 $ export SBOX_REDIRECT_FORCE=/usr/bin/perl
(lenny)~/src/mytest/maemopad-2.4 $ sb2 dpkg-buildpackage -rfakeroot -d -b

Running Maemopad

As user on the host:

$ Xephyr :2 -host-cursor -screen 800x480x16 -dpi 96 -ac &
$ schroot -c lenny

You are now logged in as root in to the chrooted environment as a normal (non-root) user.

(lenny)~ $ export DISPLAY=:2
(lenny)~ $ cd ~/src/mytest/
(lenny)~/src/mytest $ sb2 -eR dpkg -i maemopad_2.4_armel.deb
(lenny)~/src/mytest $ maemo-sdk start gui

Notice that Maemopad appears in the x11 window.
Now you can launch MaemoPad from the Extras menu in the Xephyr window.

(lenny)~/src/mytest $ maemo-sdk stop gui

Installing Qt

As root in the chrooted environment:

(lenny)~ # aptitude install qt4-dev-tools

Known Issues

The procedures above work quite well, other than the fact that the following scripts are missing from the chrooted environment:

* run-standalone.sh
* af-sb-init.sh

They don't seem to be important.. just a cosmetic matter.

Guides used as a source for this document

Parts of the following sites were used to compose this guide. These sites should be visited to get more detail on the process.

• https://alioth.debian.org/docman/view.php/30192/21/debian-amd64-howto.html
• http://www.debian-administration.org/articles/566
• http://nion.modprobe.de/blog/archives/539-Setting-up-build-chroots-on-Debian.html
• http://repository.maemo.org/stable/4.1.2/INSTALL.txt
• http://maemo-sdk.garage.maemo.org/install-debian.html