$ uname -a
Linux ubuntu12 3.13.0-91-generic #138~precise1-Ubuntu SMP Fri Jun 24 18:50:28 UTC 2016 i686 i686 i386 GNU/Linux
~$ sudo apt-get install build-essential bison flex gawk dos2unix libstdc++5
[sudo] password for strykar:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package bison 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
Package flex 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
Package gawk 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
Package dos2unix 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
Package libstdc++5 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 'bison' has no installation candidate
E: Package 'flex' has no installation candidate
E: Package 'gawk' has no installation candidate
E: Package 'dos2unix' has no installation candidate
E: Package 'libstdc++5' has no installation candidate