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Bug#833728: marked as done (ldconfig causes FTBFS by creating spurious symlink to symlink)

Your message dated Sat, 17 Dec 2016 22:06:28 +0000
with message-id <E1cIN7c-000HWM-1e@fasolo.debian.org>
and subject line Bug#833728: fixed in openmpi 2.0.2~git.20161225-8
has caused the Debian Bug report #833728,
regarding ldconfig causes FTBFS by creating spurious symlink to symlink
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
833728: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=833728
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: libc-bin
Version: 2.19-18+deb8u4
Severity: important
File: /sbin/ldconfig
Tags: upstream

Hi,

This bug is akin to 249122, but (in my opinion) sufficiently different that it
should be tracked as a separate bug.

A bug has recently been open against yorick which FTBFS (831406) and mpich
(831442) in which the following happens, due to the behaviour of ldconfig:

libmpich12 and libopenmpi10 provide /usr/lib/libmpi.so as an alternative that
may point to either
 /usr/lib/x86_64-linux-gnu/libmpich.so.12
or
 /usr/lib/openmpi/lib/libmpi.so

When mpich is installed first, ldconfig detects that the SONAME for
/usr/lib/libmpi.so is libmpich.so.12 and creates the symlink
/usr/lib/libmpich.so.12.

If one then installs libopenmpi10, the alternative is set automatically to
/usr/lib/openmpi/lib/libmpi.so. We then have /usr/lib/libmpich.so.12 that
points to /usr/lib/openmpi/lib/libmpi.so, which may lead to badly linked
binaries and

Since about one month, the autobuilders have started to always install mpich
before openmpi, which is what causes the FTBFS in yorick. There is no way this
can be fixed in the yorick package. There may be workarounds possible to
implement in mpich and openmpi, but I would argue that the bug really lies in
ldconfig.

ldconfig could detect that /usr/lib/libmpi.so is an alternative (subject to
changes), and not operate on such links.

ldconfig could also detect that /usr/lib/libmpi.so is points (indirectly) to a
correctly named file in a directory that is listed in ld.so.conf, and not
operate in this case.

Since this issue eventually causes an FTBFS, I set the severity to important.
If you decide that this is not appropriate, any guidance to work around the
issue would be appreciated.

Kind regards, Thibaut.



-- System Information:
Debian Release: 8.4
  APT prefers stable
  APT policy: (990, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.6.0-0.bpo.1-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libc-bin depends on:
ii  libc6  2.19-18+deb8u4

libc-bin recommends no packages.

libc-bin suggests no packages.

-- no debconf information

--- End Message ---
--- Begin Message --- 
Source: openmpi
Source-Version: 2.0.2~git.20161225-8

We believe that the bug you reported is fixed in the latest version of
openmpi, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 833728@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Alastair McKinstry <mckinstry@debian.org> (supplier of updated openmpi package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Sat, 17 Dec 2016 14:17:24 +0000
Source: openmpi
Binary: openmpi-bin libopenmpi-dev libopenmpi2 openmpi-common openmpi-doc
Architecture: source amd64 all
Version: 2.0.2~git.20161225-8
Distribution: unstable
Urgency: medium
Maintainer: Alastair McKinstry <mckinstry@debian.org>
Changed-By: Alastair McKinstry <mckinstry@debian.org>
Description:
 libopenmpi-dev - high performance message passing library -- header files
 libopenmpi2 - high performance message passing library -- shared library
 openmpi-bin - high performance message passing library -- binaries
 openmpi-common - high performance message passing library -- common files
 openmpi-doc - high performance message passing library -- man pages
Closes: 833728 842881
Changes:
 openmpi (2.0.2~git.20161225-8) unstable; urgency=medium
 .
   * Multiarch support. Closes: #833728, #842881.
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--- End Message ---
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