Possible solution here
http://askubuntu.com/questions/760634/cannot-install-build-essential-on-ubuntu-16-04
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https://bugs.launchpad.net/bugs/1638945
Title:
package libc6:amd64 2.23-0ubu
Shortly after installation, I went into update-
manager->Settings->Updates and unselected everything except for
"Important security updates". This seemed to be the cause of the problem
I was observing (may not be the case for others). To fix, I selected
"Recommended updates", ran apt-get update, an
This prevents the installation of g++, gcc-multilib, g++-multilib among
others. gcc can still be installed but it can only generate binaries
that don't depend on libc.
This bug does not seem to appear when a system is upgraded from lubuntu
14.04.
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Having same problem on
Client: Ubuntu 12.04.2 LTS (GNU/Linux 3.2.0-69-generic-pae i686)
Server: Ubuntu 12.04.5 LTS (GNU/Linux 3.2.0-77-generic x86_64)
This is frighteningly bad.
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