Re: [hwloc-devel] --enable-plugins broken

[Jeff Squyres (jsquyres)]

Good enough; thanks for the refresher. :)

Sent from my phone. No type good. 

> On Aug 18, 2014, at 2:07 PM, "Brice Goglin"  wrote:
> 
> Le 18/08/2014 20:37, Jeff Squyres (jsquyres) a écrit :
>> I notice that --enable-plugins seems to be broken -- it always ends in:
>> 
>> configure: WARNING: Plugin support requested, but could not find ltdl.h
>> configure: error: Cannot continue
>> 
>> if you don't have libltdl installed.  Is this intentional?  I.e., have we 
>> already relied on an external libltdl?  Or have we previously embedded 
>> libltdl (via LT_CONFIG_LTDL_DIR), and it has just bit-rotted?
> 
> We had both external and embedded ltdl support in the beginning. We
> removed embedded in 1.7.1.
> Brice
> 
> 
> commit 7491172a4754b0e198f699cb31b7c65c59ac4df6
> Author: Brice Goglin 
> Date:   Wed May 15 08:15:49 2013 +
> 
>Stop embedding libltdl, always use the system-wide libltdl
> 
>The ltdl embedding caused problems to the hwloc embedding such as
>  http://www.open-mpi.org/community/lists/hwloc-devel/2013/04/3659.php
>We fixed the embedding AM_CONDITIONAL problem in
>  https://svn.open-mpi.org/trac/hwloc/changeset/5605
>but the generated tarballs now (sometimes) miss libltdl,
>causing configure to break.
>The patch in the first link above worked around that issue but...
> 
>* Embedding ltdl is useful when you rely on recent ltdl features,
>  while ltdl 1.5 (couldn't test earlier) looks OK for hwloc,
>  and that version is very old and available everywhere.
>* the ltdl embedding ability isn't perfect in "recursive" mode
>  (we had a hack for its config.h file in our configure
>   see http://lists.gnu.org/archive/html/libtool/2012-08/msg00016.html)
>* we only need ltdl when --enable-plugins (not by default)
> 
>That's enough reasons to consider not embedding ltdl anymore.
>We now require people to install libltdl-dev/libtool-ltdl-dev
>if they want plugins.
> 
>This commit was SVN r5618.
> 
> 
> ___
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> Link to this post: 
> http://www.open-mpi.org/community/lists/hwloc-devel/2014/08/4176.php

Re: [hwloc-devel] --enable-plugins broken

[Brice Goglin]

Le 18/08/2014 20:37, Jeff Squyres (jsquyres) a écrit :
> I notice that --enable-plugins seems to be broken -- it always ends in:
>
> configure: WARNING: Plugin support requested, but could not find ltdl.h
> configure: error: Cannot continue
>
> if you don't have libltdl installed.  Is this intentional?  I.e., have we 
> already relied on an external libltdl?  Or have we previously embedded 
> libltdl (via LT_CONFIG_LTDL_DIR), and it has just bit-rotted?
>

We had both external and embedded ltdl support in the beginning. We
removed embedded in 1.7.1.
Brice


commit 7491172a4754b0e198f699cb31b7c65c59ac4df6
Author: Brice Goglin 
List-Post: hwloc-devel@lists.open-mpi.org
Date:   Wed May 15 08:15:49 2013 +

Stop embedding libltdl, always use the system-wide libltdl

The ltdl embedding caused problems to the hwloc embedding such as
  http://www.open-mpi.org/community/lists/hwloc-devel/2013/04/3659.php
We fixed the embedding AM_CONDITIONAL problem in
  https://svn.open-mpi.org/trac/hwloc/changeset/5605
but the generated tarballs now (sometimes) miss libltdl,
causing configure to break.
The patch in the first link above worked around that issue but...

* Embedding ltdl is useful when you rely on recent ltdl features,
  while ltdl 1.5 (couldn't test earlier) looks OK for hwloc,
  and that version is very old and available everywhere.
* the ltdl embedding ability isn't perfect in "recursive" mode
  (we had a hack for its config.h file in our configure
   see http://lists.gnu.org/archive/html/libtool/2012-08/msg00016.html)
* we only need ltdl when --enable-plugins (not by default)

That's enough reasons to consider not embedding ltdl anymore.
We now require people to install libltdl-dev/libtool-ltdl-dev
if they want plugins.

This commit was SVN r5618.

[hwloc-devel] --enable-plugins broken

[Jeff Squyres (jsquyres)]

I notice that --enable-plugins seems to be broken -- it always ends in:

configure: WARNING: Plugin support requested, but could not find ltdl.h
configure: error: Cannot continue

if you don't have libltdl installed.  Is this intentional?  I.e., have we 
already relied on an external libltdl?  Or have we previously embedded libltdl 
(via LT_CONFIG_LTDL_DIR), and it has just bit-rotted?

-- 
Jeff Squyres
jsquy...@cisco.com
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