problems upgrading from 14.04 to 16.04

[Tom H]

On Tue, Sep 27, 2016 at 5:59 PM, J.L. Blom <joep at neuroweave.nl> wrote:
>
> Tom, that is peculiar, see the difference with "sudo apt-cache policy
> gcc-5-base"
>
> joep at laguna:~$ sudo apt-cache policy gcc-5
> gcc-5:
>   Installed: (none)
>   Candidate: 5.4.0-6ubuntu1~16.04.2
>   Version table:
>      5.4.0-6ubuntu1~16.04.2 500
>         500 http://nl.archive.ubuntu.com/ubuntu xenial-updates/main amd64
> Packages
>         500 http://security.ubuntu.com/ubuntu xenial-security/main amd64
> Packages
>      5.3.1-14ubuntu2 500
>         500 http://nl.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
>
> Now the question: How to get it installed?

Please don't install gcc-5. I've compiled various things on this
laptop and have it installed for that reason.

Looking at your first email. There's a problem with libkolabxml1 but
it no longer exists on 16.04/16.10 (the below's on 16.10):

th at localhost ~ $ apt-cache search libkolab
libkolab-dev - Development package for Kolab library
libkolab1 - Maps KDE containers to Kolab formats
libkolabxml-dev - Development files for libkolabxml
libkolabxml1v5 - Kolab XML format (shared library)

th at localhost ~ $ apt-cache show libkolabxml1v5
Package: libkolabxml1v5
Priority: optional
Section: universe/libs
Installed-Size: 3504
Maintainer: Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
Original-Maintainer: Debian Kolab Maintainers
<pkg-kolab-devel at lists.alioth.debian.org>
Architecture: amd64
Source: libkolabxml
Version: 1.1.4-1build1
Replaces: libkolabxml1
Depends: libboost-system1.61.0, libboost-thread1.61.0, libc6 (>=
2.14), libcurl3-gnutls (>= 7.16.2), libgcc1 (>= 1:3.0), libstdc++6 (>=
5.2), libxerces-c3.1
Breaks: libkolabxml1
Filename: pool/universe/libk/libkolabxml/libkolabxml1v5_1.1.4-1build1_amd64.deb
Size: 604838
MD5sum: 99de717a61d2a56182c12743495ddc5e
SHA1: d2e2a439eadbc8ed404c8b5aa19f0b6bdd76e38d
SHA256: 276159ac59b5faa0dedfbb6ec5812d802a799f28136fd2af82f2f4297baf3490
Description: Kolab XML format (shared library)
Description-md5: 01546898c4418aefac0ceaf3d5324602
Homepage: http://git.kolab.org/libkolabxml
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Task: kubuntu-desktop, kubuntu-full

th at localhost ~ $ apt-cache show libkolabxml1v5 | grep -E 'Rep|Bre'
Replaces: libkolabxml1
Breaks: libkolabxml1

Does installing libkolabxml1v5 make a difference?

If it doesn't please post the output of
apt-get install -s gcc-5-base=5.4.0-6ubuntu1~16.04.2
and
apt-get install -s -o Dpkg::Options::="--force-all"
gcc-5-base=5.4.0-6ubuntu1~16.04.2