Erdem ua at 00:06, 1 November 2009

2009-11-01T00:06:53Z

Erdem ua: Created page with 'This page is a brief summary of the cross-compilation discussion on the SamyGO forum. Main contributors to this information are cowenchicken. The information in this page pertainâ¦'

2009-11-01T00:01:43Z

Created page with 'This page is a brief summary of the cross-compilation discussion on the SamyGO forum. Main contributors to this information are cowenchicken. The information in this page pertainâ¦'

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This page is a brief summary of the cross-compilation discussion on the SamyGO forum. Main contributors to this information are cowenchicken. The information in this page pertains to the building of a toolchain, based on the source code as stored in the file 32B650.zip, available from Samsung.

-This informations are verified on Debian lenny.-

Before start ing, please check this packages are installed on your system:
apt-get install deboostrap nfs-kernel-server nfs-common portmap

At on a non-debian system download and install the debootstrap package manually
http://ftp.de.debian.org/debian/pool/main/d/debootstrap/

=Installing Debian Lenny in an NFS chroot=
==First Stage debootstrap==
Run the following on your debian based (or debootstrap ready) workstation
debootstrap --verbose --arch armel --foreign lenny /armel-chroot http://ftp.de.debian.org/debian
This gives you first stage linux image to /armel-chroot directory.

==NFS export the chroot directory==
I use the following options, not really sure all of them are relevant, but they work.
edit "/etc/exports" file as
/armel-chroot <server-domain, like 192.168.1.0>/255.255.255.0(rw,sync,insecure,no_subtree_check,no_root_squash)

Than execute
exportfs -a
command. This will apply changes to system.
You might need restart nfs and portmap services...

==Mount the NFS chroot share on the TV==

export chroot_share=<server>:/path/to/armel-chroot
export armel_chroot=/dtv/usb/sda2/armel-chroot

mkdir -p $armel_chroot
mount -o rw,soft,udp,async,nolock,rsize=32768,wsize=32768 $chroot_share $armel_chroot

==Second Stage debootstrap==
this one takes a while

export busybox=/dtv/usb/sda2/busybox
$busybox chroot $armel_chroot /debootstrap/debootstrap --second-stage

On some Linux distributions like ubuntu, you can get error at:
I: Configuring mount...
I: Configuring initscripts...
I: Configuring sysvinit...
W: Failure while configuring required packages.

If you have this error, than Edit /var/lib/dpkg/info/sysvinit.postinst
#you have to comment them using # in front of them
rm -f $INITCTL
mkfifo -m 600 $INITCTL
than inside your chroot and run dpkg --configure -a (or something like this), you should get ride of this error and would be able to continue using apt-get/aptitude.

==Getting into the chroot==
You can use the following script to get into the chroot
#!/bin/sh

#options
export chroot_share=<server>:/path/to/armel-chroot
export armel_chroot=/dtv/usb/sda2/armel-chroot
export busybox=/dtv/usb/sda2/busybox

#mount the chroot nfs share
mount -o rw,soft,udp,async,nolock,rsize=32768,wsize=32768 $chroot_share $armel_chroot

#mount some important dirs
mount -o bind /dev $armel_chroot/dev
mount -o bind /dev/sam $armel_chroot/dev/sam
mount -o bind /dev/pts $armel_chroot/dev/pts
mount -o bind /proc $armel_chroot/proc
mount -o bind /proc/bus/usb $armel_chroot/proc/bus/usb
mount -o bind /sys $armel_chroot/sys

#bind resolv.conf
mount -o bind /etc/resolv.conf $armel_chroot/etc/resolv.conf

#start the chroot
$busybox chroot $armel_chroot /bin/bash --login

#umount
umount $armel_chroot/sys
umount $armel_chroot/proc/bus/usb
umount $armel_chroot/proc
umount $armel_chroot/dev/pts
umount $armel_chroot/dev/sam
umount $armel_chroot/dev
umount $armel_chroot/etc/resolv.conf

umount $armel_chroot

==Installing additional packages within the chroot==
Make sure your /etc/apt/sources.list contains the following lines
deb http://ftp.de.debian.org/debian lenny main contrib non-free
deb-src http://ftp.de.debian.org/debian lenny main contrib non-free
deb http://security.debian.org/ lenny/updates main contrib non-free
Ttan you can install anything you like, e.g.
apt-get update
apt-get install strace

@@ Line 4: / Line 4: @@
 Before start ing, please check this packages are installed on your system:
-apt-get install deboostrap nfs-kernel-server nfs-common portmap
+    apt-get install deboostrap nfs-kernel-server nfs-common portmap
-At on a non-debian system download and install the debootstrap package manually
+On a non-debian system download and install the '''debootstrap''' package manually
 http://ftp.de.debian.org/debian/pool/main/d/debootstrap/
@@ Line 20: / Line 20: @@
 /armel-chroot <server-domain, like 192.168.1.0>/255.255.255.0(rw,sync,insecure,no_subtree_check,no_root_squash)
-Than execute
+Than execute command of
      exportfs -a
-command. This will apply changes to system.
+This will apply changes to system.
-You might need restart nfs and portmap services...
+You ''might'' need restart nfs and portmap services after change too.
 ==Mount the NFS chroot share on the TV==
+At this stage, you needed to mount NFS directory to TV for continue debootstrap's second stage.
      export chroot_share=<server>:/path/to/armel-chroot
      export armel_chroot=/dtv/usb/sda2/armel-chroot
@@ Line 35: / Line 35: @@
 ==Second Stage debootstrap==
-this one takes a while
+This step takes longer time mainly because of TV's processing speed.
      export busybox=/dtv/usb/sda2/busybox
@@ Line 94: / Line 94: @@
      deb-src http://ftp.de.debian.org/debian lenny main contrib non-free
      deb http://security.debian.org/ lenny/updates main contrib non-free
-Ttan you can install anything you like, e.g.
+Than you can install anything you like, e.g.
      apt-get update
      apt-get install strace

Setting up a native-compilation toolchain - Revision history

Erdem ua at 00:06, 1 November 2009

Erdem ua: Created page with 'This page is a brief summary of the cross-compilation discussion on the SamyGO forum. Main contributors to this information are cowenchicken. The information in this page pertainâ¦'

Erdem ua: Created page with 'This page is a brief summary of the cross-compilation discussion on the SamyGO forum. Main contributors to this information are cowenchicken. The information in this page pertainâ¦'