apt-get install libqt4-dev Reading package lists... Done Building dependency tree... Done You might want to run âapt-get -f installâ to correct these: The following packages have unmet dependencies. libglu1-mesa-dev: Depends: libgl1-mesa-dev but it is not going to be installedor libgl-dev libqt4-dev: Depends: xlibmesa-gl-dev but it is not going to be installedor libgl-dev E: Unmet dependencies. Try âapt-get -f installâ with no packages (or specify a solution). jindal:/etc/apt# apt-get -f install Reading package lists... Done Building dependency tree... Done Correcting dependencies...Done The following packages will be REMOVED libglu1-mesa-dev 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. 1 not fully installed or removed. Need to get 0B of archives. After unpacking 803kB disk space will be freed. Do you want to continue [Y/n]? and i dont wanna remove any as i suppose opengl would stop working