Testing Latex in Blogger

This is just a test of a "plug-in" to display math using LaTex in Blogger: \[x=\sum_i^M x_i\]

More information? Click here http://watchmath.com/vlog/?p=438

Cheers!

Maemo 5 SDK in Gentoo

This is a small guide to install Maemo 5 SDK in Gentoo. The steps that I present  here were based on the Maemo 5 SDK installation guide. There exist a GUI installer, but in this post I will present just step by step using console commands.

The installation was done in a 32 bit computer, obviously running Gentoo, with kernel 2.6.31.

Points to consider before installing Maemo:

• VDSO support must not be set in the host kernel. To check if this feature is turned on run this command as root  

        $cat /proc/sys/vm/vdso_enabled
        if a 1 is shown then vdso is enabled.  To turn it off run as root   
        $echo 0 > /proc/sys/vm/vdso_enabled
        or add the following kernel parameter vdso=0.

• Xephyr must be installed. In order to test whether Xephyr is installed execute the following command:  

          $Xephyr :2                                                                          



If it doesn't  work then add the kdriver flag to your USE variable and recompile xorg-server. It should work after that.

Installation

1. Download Maemo installation scripts 

$wget  http://repository.maemo.org/stable/5.0/maemo-scratchbox-install_5.0.sh

$wget  http://repository.maemo.org/stable/5.0/maemo-sdk-install_5.0.sh

2.  Install Scratchbox by running:
$sudo ./maemo-scratchbox-install_5.0.sh -u USER -s PATH/scratchbox

where USER=username for the scratchbox system and PATH= path where you want the files to be installed. Note that this path must include a directory named scratchbox.

3. Log into the new unix-group "sbox" created by the installer  running
$newgrp sbox

4. Install the SDK by running
$./maemo-sdk-install_5.0.sh -s  PATH/scratchbox

PATH is the route where scratchbox was installed in the 2nd step.

5. Start Scratchbox

$PATH/scratchbox/sbin/sbox_ctl start

6. Login to Scratchbox
$PATH/scratchbox/login

7. Get the Nokia Binaries from http://tablets-dev.nokia.com/eula/index.php, and Accept the EULA, then copy the address that is given to you after accepting the EULA  and paste it at the bottom in /etc/apt/sources.list file for both targets ARMEL and X86.

Selecting Targets:

ARMEL Target

 [sbox-FREMANTLE_X86: ~] sb-conf select FREMANTLE_ARMEL 

X86 Target

[sbox-FREMANTLE_ARMEL: ~] sb-conf select FREMANTLE_X86

$ nano -w /etc/apt/sources.list 

Then run the following command in both targets
[sbox-FREMANTLE_ARMEL: ~] apt-get update
in order to update repositories in the scratchbox  (Debian based Linux)

8. Finally, Install the Nokia Binaries in both targets
[sbox-FREMANTLE_ARMEL: ~] fakeroot apt-get install nokia-binaries --fix-missing

9. Now, start the UI as shown in http://wiki.maemo.org/Documentation/Maemo_5_Final_SDK_Installation#Starting.2FShutting_down_the_SDK_UI

I strongly recommend reading the Maemo 5 SDK installation guide for any specific detail.
Happy Hacking =)

New Space for sharing some info

After having my own blog using an old PC, which by the way died a few months ago, I decided to start using Blogger as my new tool for posting information about the stuff I do in my geeky life.

Hope you enjoy it! :)