tim@ASUSKA:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
 libsdl2-dev : Depends: libsdl2 (= 2.0.3+z4~20140315-8621-1ppa1trusty1) but it is not installed
 libsdl2-image-dev : Depends: libsdl2-image (= 2.0.0+z1~20131109-434-1ppa1trusty2) but it is not installed
E: Unmet dependencies. Try using -f.
tim@ASUSKA:~$