jackie@jackie-Latitude-E6410:~/Development/Code/Google$ sudo apt-get install git-core gnupg flex bison gperf build-essential   zip curl zlib1g-dev libc6-dev lib32ncurses5-dev ia32-libs   x11proto-core-dev libx11-dev lib32readline5-dev lib32z-dev   libgl1-mesa-dev g++-multilib mingw32 tofrodos python-markdown   libxml2-utils
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'lib32z1-dev' instead of 'lib32z-dev'
Package lib32readline5-dev 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
However the following packages replace it:
  lib32readline-gplv2-dev

E: Package 'lib32readline5-dev' has no installation candidate