RE: libjpeg62 libjpeg8 RE: Step by Step build instructions (Updates)

[George Kirkham <gk...@co2crc.com.au>]

Hi,

 

If you know, could you tell me the package dependencies and versions or
OpenMeetings?   

 

I am guessing that in particularly for Ubuntu, that many of the old
installation instructions that request people to install packages which
are no longer required, because the packages have been updated or
superceeded.

 

For example what are OpenMeeings actual application/package
requirements: sun-java >=6, swftools >=9, Sox >= 12, xpdf (because of
libjpeg62?), libjpeg >=62, jod = 3.0-beta-4, imagemakick, lame,
ghostscript, ffmpeg, [and others?]

 

Can OpenMeetings use turbo live jpeg libjpeg-turbo ? instead of
libjpeg62 or libjpeg8 ?

 

I am trying to better understand the packages for which OpenMeetings is
dependent on.

 

apt-get install libgif-dev xpdf libfreetype6 libfreetype6-dev libjpeg62
libjpeg8 libjpeg8-dev

 

Questions that I would like to ask are;

1)  Why do we install both libjpeg62 and libjpeg8 ? surely libjpeg8 is
all that is required ?  And if libjpeg62 is required then why do we
install the development package for libjpeg8 and not libjpeg62 ?



2)  Why do we install the development version of libjpeg8-dev?



3)  Why do we install the development version at all ?

 

 

http://code.google.com/p/openmeetings/source/browse/wiki/UbuntuLucidLTS.
wiki?spec=svn3925&r=3925
now we can progress with swftools

get the latest from here http://www.swftools.org/download.html

{{{
mkdir swftools
cd swftools
wget http://www.swftools.org/swftools-2011-01-23-1815.tar.gz
tar -zxvf swftools-2011-01-23-1815.tar.gz
cd swftools-2011-01-23-1815
}}}

because of some missing items from later versions of libjpeg, xpdf needs
to be put into the build

 

http://code.google.com/p/openmeetings/issues/detail?id=135

The dependencies :
libc6 (>= 2.5-0ubuntu14 ), libfreetype6 (>= 2.2.1-5ubuntu1.1 ),
libjpeg62 (>= 6b-13
), python2.5 (>= 2.5.1-0ubuntu1 ), python-imaging (>= 1.1.6-0ubuntu3 ),
zlib1g (>= 1 )

 

 

Thanks,

 

George Kirkham

 

Re: libjpeg62 libjpeg8 RE: Step by Step build instructions (Updates)

[brian mullan <bm...@gmail.com>]

I would also suggest looking at libjpeg-turbo which I believe is going to
become the default in Ubuntu a a couple other distributions (already or
soon).
http://libjpeg-turbo.virtualgl.org/

*libjpeg-turbo is a derivative of libjpeg <http://www.ijg.org> that uses
SIMD instructions (MMX, SSE2, NEON) to accelerate baseline JPEG compression
and decompression on x86, x86-64, and ARM systems. On such systems, libjpeg-
turbo is generally 2-4x as fast as the unmodified version of libjpeg, all
else being equal.
*

I have been using this for 2 years and know many others that are as well.
It does make considerable performance improvement for jpeg processing.

Brian


On Mon, May 21, 2012 at 10:21 PM, George Kirkham <gk...@co2crc.com.au>wrote:

> Hi,****
>
> ** **
>
> If you know, could you tell me the package dependencies and versions or
> OpenMeetings?   ****
>
> ** **
>
> I am guessing that in particularly for Ubuntu, that many of the old
> installation instructions that request people to install packages which are
> no longer required, because the packages have been updated or superceeded.
> ****
>
> ** **
>
> For example what are OpenMeeings actual application/package requirements:
> sun-java >=6, swftools >=9, Sox >= 12, xpdf (because of libjpeg62?),
> libjpeg >=62, jod = 3.0-beta-4, imagemakick, lame, ghostscript, ffmpeg,
> [and others?]****
>
> ** **
>
> Can OpenMeetings use turbo live jpeg libjpeg-turbo ? instead of libjpeg62
> or libjpeg8 ?****
>
> ** **
>
> I am trying to better understand the packages for which OpenMeetings is
> dependent on.****
>
> ** **
>
> apt-get install libgif-dev xpdf libfreetype6 libfreetype6-dev *libjpeg62
> libjpeg8* libjpeg8-dev****
>
> ** **
>
> Questions that I would like to ask are;****
>
> **1)  **Why do we install both libjpeg62 and libjpeg8 ? surely libjpeg8
> is all that is required ?  And if libjpeg62 is required then why do we
> install the development package for libjpeg8 and not libjpeg62 ?
>
> ****
>
> **2)  **Why do we install the development version of libjpeg8-dev?
>
> ****
>
> **3)  **Why do we install the development version at all ?****
>
> ** **
>
> ** **
>
>
> http://code.google.com/p/openmeetings/source/browse/wiki/UbuntuLucidLTS.wiki?spec=svn3925&r=3925
> now we can progress with swftools
>
> get the latest from here http://www.swftools.org/download.html
>
> {{{
> mkdir swftools
> cd swftools
> wget http://www.swftools.org/swftools-2011-01-23-1815.tar.gz
> tar -zxvf swftools-2011-01-23-1815.tar.gz
> cd swftools-2011-01-23-1815
> }}}
>
> because of some missing items from later versions of libjpeg, xpdf needs
> to be put into the build****
>
> ** **
>
> http://code.google.com/p/openmeetings/issues/detail?id=135****
>
> The dependencies :****
>
> libc6 (>= 2.5-0ubuntu14 ), libfreetype6 (>= 2.2.1-5ubuntu1.1 ), libjpeg62 (>= 6b-13****
>
> ), python2.5 (>= 2.5.1-0ubuntu1 ), python-imaging (>= 1.1.6-0ubuntu3 ), zlib1g (>= 1 )****
>
> ** **
>
> ** **
>
> Thanks,****
>
> ** **
>
> George Kirkham****
>
> ** **
>