$ sudo apt-get install curl freeglut3-dev \
>     libfreetype6-dev libgl1-mesa-dri libglib2.0-dev xorg-dev \
>     gperf g++ cmake python-virtualenv \
>     libssl-dev libbz2-dev libosmesa6-dev libxmu6 libxmu-dev libglu1-mesa-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
libxmu6 is already the newest version.
libxmu6 set to manually installed.
curl is already the newest version.
curl set to manually installed.
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
 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.