I am trying to install ia32-libs on Ubuntu 12.04 LTS (x86). I enabled all the repository sources but I'm receiving the error message below:

~$ sudo apt-get install ia32-libs  

Reading package lists... Done  

Building dependency tree         

Reading state information... Done  

Package ia32-libs is not available, but is referred to by another package.  

This may mean that the package is missing, has been obsoleted, or  

is only available from another source  



E: Package 'ia32-libs' has no installation candidate

output of sudo apt-cache policy ia32-libs

ia32-libs:  

  Installed: (none)  

  Candidate: (none)  

  Version table:  

output of cat /etc/apt/sources.list (removed similar hyperlinks)

deb http://archive.ubuntu.com/ubuntu/ precise restricted main multiverse universe  

deb-src archive.ubuntu.com/ubuntu/ precise restricted main multiverse universe #Added by software-properties  

deb security.ubuntu.com/ubuntu/ precise-security main restricted universe multiverse  

deb-src security.ubuntu.com/ubuntu/ precise-security main restricted universe multiverse #Added by software-properties  

deb archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse  

deb-src archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse #Added by software-properties