Difference between revisions of "Dummies Guide to Building Angstrom Linux for MinnnowBoard"

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  git texi2html subversion ncurses-dev sed cvs coreutils docbook-utils python-pysqlite2 help2man make \
 
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  gcc g++ desktop-file-utils chrpath dosfstools kpartx bitbake
 
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  * NOISO = "1" : Due to a bug in ISO generation when building for EFI-only machines, it is necessary to include this line in  
 
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Revision as of 17:11, 7 January 2014

Mlogo.png Back to the MinnowBoard home page


Angstrom os logo.png

Summary

This guide explains building the Embedded Linux distribution - Angstrom from source in a beginner friendly manner.

Important Notes

1. These instructions have been documented using Ubuntu 12.04 LTS as the reference operating system. It is advised that you also have the same setup.

2. Please make sure that you have at least 18GB of free space available as the source code can take up a lot of space.

3. It took 8 hours to build a systemd-image on a dual core I7 machine with 8GB RAM and only two(out of the possible 4) threads used.

Procedure

Step-1:

Install the pre-requisites by typing the command below in the terminal:

sudo apt-get install gawk wget git diffstat unzip build-essential chrpath libsdl1.2-dev xterm unzip texinfo \
git texi2html subversion ncurses-dev sed cvs coreutils docbook-utils python-pysqlite2 help2man make \
gcc g++ desktop-file-utils chrpath dosfstools kpartx bitbake


Step-2:

Change the default shell in Ubuntu from dash to bash typing the command below in the terminal::

sudo dpkg-reconfigure bash


Step-3:

The next step is to download the Angstrom setup scripts which will help us prepare a development environment for building the Angstrom image. Type the following command in your terminal:

git clone git://github.com/Angstrom-distribution/setup-scripts.git

Angstroms1.png


Step-4:

Make the necessary changes to the local.conf file as shown below. This file can be found in ~/setup-scripts/conf/local.conf .

# Add this to the bottom:
MACHINE ?= "minnow"
LICENSE_FLAGS_WHITELIST = "license_emgd-driver-bin commercial" 
NOISO = "1"
Explanation:
* LICENSE_FLAGS_WHITELIST = "license_emgd-driver-bin commercial" : This is required to prevent the resulting image from 
  including anything that might violate the license terms of the packages used to implement the video acceleration feature, 
  such as gst-ffmpeg and ffmpeg.
* NOISO = "1" : Due to a bug in ISO generation when building for EFI-only machines, it is necessary to include this line in 
  your local.conf:


Step-5:

Setup the necessary environment for MinnowBoard by typing the command below in the terminal:

MACHINE=minnow ./oebb.sh config minnow


Step-6:

Build the image by typing the following command in the terminal:

MACHINE=minnow ./oebb.sh bitbake systemd-image


Step-7:

The resulting image will be located in ~/setup-scripts/build/tmp-angstrom_v2012_12-eglibc/deploy/images/minnow/

Writing the Angstrom Image to an external storage device

Now that we have successfully built an Angstrom image from source, the next step is to write the image to an external storage device(microSD card, HDD etc.) and test it on the MinnowBoard. Depending on which type of storage device you are planning to write the image to, please select an appropriate link from below:

Troubleshooting

Starting Over

Deleting past images to free up space