Bug#741487: mozjpeg 2.1 package

[Dmitry Katsubo]

On 2016-11-21 23:45, Pierre Rudloff wrote:
By default mozjpeg is installed in /opt/mozjpeg/. You don't even need 
to use LD_PRELOAD as the binary it installs is automatically linked to 
/opt/mozjpeg/lib64/libjpeg.so.


(The conflict issue I was raising is only if want to include mozjpeg in 
Debian and install it in /usr/.)


Actually I just thought that utility tools in bin/ could be statically 
linked like in the example below:


root@debian:~# ./configure --disable-shared; make clean install
root@debian:~# ldd /opt/mozjpeg/bin/cjpeg
linux-gate.so.1 (0xb7768000)
libpng12.so.0 => /lib/i386-linux-gnu/libpng12.so.0 (0xb7728000)
libm.so.6 => /lib/i386-linux-gnu/i686/cmov/libm.so.6 
(0xb76e2000)
libc.so.6 => /lib/i386-linux-gnu/i686/cmov/libc.so.6 
(0xb7537000)

libz.so.1 => /lib/i386-linux-gnu/libz.so.1 (0xb751a000)
/lib/ld-linux.so.2 (0x8002f000)

Now one can package _only_ binaries and omit the (conflicting) library. 
Wouldn't this be a solution to finally allow mozjpeg into Debian repo?


--
With best regards,
Dmitry

Bug#741487: mozjpeg 2.1 package

[Pierre Rudloff]

Le 21/11/2016 à 23:27, Dmitry Katsubo a écrit :

The question is: if I need to install mozjpeg together with libjpeg, what are 
the
options? Do I need to change the prefix to /usr/local for mozjpeg, and then use

$ LD_PRELOAD=/usr/local/lib/libjpeg.so jpegtran -copy all  


By default mozjpeg is installed in /opt/mozjpeg/. You don't even need to 
use LD_PRELOAD as the binary it installs is automatically linked to 
/opt/mozjpeg/lib64/libjpeg.so.


(The conflict issue I was raising is only if want to include mozjpeg in 
Debian and install it in /usr/.)

Bug#741487: mozjpeg 2.1 package

[Dmitry Katsubo]

On 2016-11-21 20:48, Pierre Rudloff wrote:
>> Hello Pierre,
>>
>> Could you please share the mozjpeg Debian package sources (with 
>> debian/control,
>> ... files)? For example as a branch in github? That will simplify creating a
>> package to play with for me.
>>
>> Also I wonder what exactly the conflict with the standard libjpeg leads to. 
>> Does
>> it mean that if mozjpeg is installed to /usr/local subtree it will interfere
>> with software that uses libjpeg?
>>
>> Many thanks in advance!
>>
> Hello,
> 
> Sorry, I don't have the source anymore (and it has been removed from mentors) 
> but it is pretty easy to build.
> 
> IIRC mozjpeg installs its own libjpeg.so library so it can't be installed 
> alongside upstream libjpeg.

Many thanks for the information!

The question is: if I need to install mozjpeg together with libjpeg, what are 
the
options? Do I need to change the prefix to /usr/local for mozjpeg, and then use

$ LD_PRELOAD=/usr/local/lib/libjpeg.so jpegtran -copy all  

? How have you played with it?

Also if I may ask you, what options are meant to be for maximum compression? I 
see
that "-optimize" and "-arithmetic" are mutually exclusive... I would assume that
compression should have a mode "try all possible".

P.S. Just discovered that non of modern browsers support arithmetic-encoded 
JPEGs

https://bugzilla.mozilla.org/show_bug.cgi?id=680385

which makes "-arithmetic" option non-attractive.

-- 
With best regards,
Dmitry

Bug#741487: mozjpeg 2.1 package

[Dmitry Katsubo]

> From: Pierre Rudloff 
> To: 741...@bugs.debian.org
> Subject: mozjpeg 2.1 package
> Date: Sun, 14 Sep 2014 02:49:22 +0200
> 
> Hello,
> 
> I have built a package for mozjpeg 2.1:
> http://mentors.debian.net/package/mozjpeg
> 
> But, as I said, it conflicts with the standard libjpeg.
> 
> Regards,

Hello Pierre,

Could you please share the mozjpeg Debian package sources (with debian/control,
... files)? For example as a branch in github? That will simplify creating a
package to play with for me.

Also I wonder what exactly the conflict with the standard libjpeg leads to. Does
it mean that if mozjpeg is installed to /usr/local subtree it will interfere
with software that uses libjpeg?

Many thanks in advance!

-- 
With best regards,
Dmitry

Bug#741487: mozjpeg 2.1 package

[Pierre Rudloff]

Le 21/11/2016 à 20:42, Dmitry Katsubo a écrit :

From: Pierre Rudloff 
To: 741...@bugs.debian.org
Subject: mozjpeg 2.1 package
Date: Sun, 14 Sep 2014 02:49:22 +0200

Hello,

I have built a package for mozjpeg 2.1:
http://mentors.debian.net/package/mozjpeg

But, as I said, it conflicts with the standard libjpeg.

Regards,


Hello Pierre,

Could you please share the mozjpeg Debian package sources (with debian/control,
... files)? For example as a branch in github? That will simplify creating a
package to play with for me.

Also I wonder what exactly the conflict with the standard libjpeg leads to. Does
it mean that if mozjpeg is installed to /usr/local subtree it will interfere
with software that uses libjpeg?

Many thanks in advance!


Hello,

Sorry, I don't have the source anymore (and it has been removed from 
mentors) but it is pretty easy to build.


IIRC mozjpeg installs its own libjpeg.so library so it can't be 
installed alongside upstream libjpeg.


Regards,

Bug#741487: mozjpeg 2.1 package

[Pierre Rudloff]

Hello,

I have built a package for mozjpeg 2.1:
http://mentors.debian.net/package/mozjpeg

But, as I said, it conflicts with the standard libjpeg.

Regards,


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