<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Relevant discussion. <br>
It appears all packages need to transition to B-D on libtiff5-dev.<br>
<br>
<br>
<div class="moz-forward-container">-------- Original Message
--------
<table class="moz-email-headers-table" border="0" cellpadding="0"
cellspacing="0">
<tbody>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject:
</th>
<td>Re: Why does libgeotiff-dev depend on libtiff5-dev ?</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Sat, 15 Jun 2013 16:35:55 -0600</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>Gordon Haverland <a class="moz-txt-link-rfc2396E" href="mailto:ghaverla@materialisations.com"><ghaverla@materialisations.com></a></td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Reply-To:
</th>
<td><a class="moz-txt-link-abbreviated" href="mailto:ghaverla@materialisations.com">ghaverla@materialisations.com</a></td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Organisation:
</th>
<td>Matter Realisations</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td>Alastair McKinstry <a class="moz-txt-link-rfc2396E" href="mailto:mckinstry@debian.org"><mckinstry@debian.org></a></td>
</tr>
</tbody>
</table>
<br>
<br>
<pre>On June 15, 2013, you wrote:
> Hi,
>
> I'm investigating
> <a class="moz-txt-link-freetext" href="http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711789">http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711789</a> and
> wondering whats going on:
>
> Grads fails to build due to a B-D conflict,
>
> grads (= 2:2.0.1-1) build-depends on one of:
> - libgeotiff-dev (= 1.3.0+dfsg-3)
> libgeotiff-dev (= 1.3.0+dfsg-3) depends on one of:
> - libtiff5-dev (= 4.0.2-6)
> libtiff4-dev (= 3.9.6-11) and libtiff5-dev (= 4.0.2-6)
> conflict libgd-dev (= 2.1.0~rc2-1) depends on one of:
> - libtiff4-dev (= 3.9.6-11)
> libgd2-xpm-dev (= 2.1.0~rc2-1) depends on one of:
> - libgd-dev (= 2.1.0~rc2-1)
> grads (= 2:2.0.1-1) build-depends on one of:
> - libgd2-xpm-dev (= 2.1.0~rc2-1)
> - libgd-dev (= 2.1.0~rc2-1)
>
>
> I'm unfamiliar with the history of libtiff4 / tiff5, but
> libgd-dev depends on libtiff-dev ; can anyone answer:
> (1) why does libgeotiff-dev depend on libtiff5-dev?
> (2) why libtiff5-dev not provide the virtual libtiff-dev?
>
> Best regards
> Alastair
Greetings.
I am not a developer or a Debian maintainer. I have built stuff
before.
A little while ago (weeks), there was a problem with TeXLive that
if people ran into a problem with a package not installing (I
think the package was tex-common) in unstable, that a user could
either downgrade libkapthsea by one version, or upgrade to all of
the 2013 TeXLive. In the discussion of that bug, was a reference
to this libtiff-4/5 dichotomy. I believe the tie in to TeX is
involving ghostscript.
As near as I can tell, the cause for the libtiff-4/5 dichotomy, is
libjpeg related. Aparently libjpeg is not being developed by
Independent JPEG group any more. Maybe. Debian was using JPEG-8.
Some person has apparently taken over the title of Independent
JPEG Group, and has started development on a JPEG-9. Somebody
forked JPEG-8, and produced a faster library that is supposed more
useful. Some distirbutions of Linux are following the faster
fork, and some are following this IJG thing which may or may not
be a continuation of JPEG-8. And someone asked questions about
OpenJPEG.
It kinds of sounds like the Debian maintainer wants to go JPEG-9
from IJG, and apparently Fedora is following the faster fork. One
branch is tied to libtiff-4, and the other to libtiff-5.
And that is as far as I got in investigating.
And I may be completely wrong.
Gord
</pre>
<br>
</div>
<br>
</body>
</html>