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[Christian González <christian.gonzalez@xxxxxxxxxx>]

Public bug reported:

I discovered the problem when I tried to compile a Qt5 QML program firstly.
I have an Ubuntu 14.04.2 LTS with all updates, no significant PPAs (only nodejs and owncloud, not affecting this problem here) and with all the -lts-utopic upgrade packages installed.

With that system, I tried to install qtbase5-dev, and apt told me:

[...]
The following packages have unmet dependencies:
 qtbase5-dev : Depends: libgles2-mesa-dev or
                        libgles2-dev but it is not installable
 unity-control-center : Depends: libcheese-gtk23 (>= 3.4.0) but it is not going to be installed
                        Depends: libcheese7 (>= 3.0.1) but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

So this package seems to be not installable. This tried in synaptic, it
tries to uninstall all -lts-utopic packages (inclusive all xserver*.deb)
and install the "old" ones instead of them.

So the problem somewhere lies within the new lts packages that seem not
to be compatible with qtbase5-dev (and its dependency: libgles2-mesa-dev
- but I am not able to find out further.

The problem is: Qt5 development on an Ubuntu 14.04.2 LTS machine is NOT
possible without a fix. The make process always complains about not
finding gl libraries.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: qtbase5-dev (not installed)
ProcVersionSignature: Ubuntu 3.16.0-31.43~14.04.1-generic 3.16.7-ckt5
Uname: Linux 3.16.0-31-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Mar 23 14:01:20 2015
InstallationDate: Installed on 2015-02-25 (26 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: qtbase-opensource-src
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: qtbase-opensource-src (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

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Ubuntu.
https://bugs.launchpad.net/bugs/1435324

Title:
  qtbase5-dev not installable on Ubuntu 14.04 LTS

Status in qtbase-opensource-src package in Ubuntu:
  New

Bug description:
  I discovered the problem when I tried to compile a Qt5 QML program firstly.
  I have an Ubuntu 14.04.2 LTS with all updates, no significant PPAs (only nodejs and owncloud, not affecting this problem here) and with all the -lts-utopic upgrade packages installed.

  With that system, I tried to install qtbase5-dev, and apt told me:

  [...]
  The following packages have unmet dependencies:
   qtbase5-dev : Depends: libgles2-mesa-dev or
                          libgles2-dev but it is not installable
   unity-control-center : Depends: libcheese-gtk23 (>= 3.4.0) but it is not going to be installed
                          Depends: libcheese7 (>= 3.0.1) but it is not going to be installed
  E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

  So this package seems to be not installable. This tried in synaptic,
  it tries to uninstall all -lts-utopic packages (inclusive all
  xserver*.deb) and install the "old" ones instead of them.

  So the problem somewhere lies within the new lts packages that seem
  not to be compatible with qtbase5-dev (and its dependency: libgles2
  -mesa-dev - but I am not able to find out further.

  The problem is: Qt5 development on an Ubuntu 14.04.2 LTS machine is
  NOT possible without a fix. The make process always complains about
  not finding gl libraries.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: qtbase5-dev (not installed)
  ProcVersionSignature: Ubuntu 3.16.0-31.43~14.04.1-generic 3.16.7-ckt5
  Uname: Linux 3.16.0-31-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Mon Mar 23 14:01:20 2015
  InstallationDate: Installed on 2015-02-25 (26 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: qtbase-opensource-src
  UpgradeStatus: No upgrade log present (probably fresh install)

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