We need to upgrade our GCC in cenbuild. It's well overdue, and it's needed for the QT project (bug 8337).
This also includes upgrading binutils. And prerequisites for this are: * Raise the glibc requirements * Upgrade various base packages in cenbuild
We have upgraded gcc before. The two last times were tracked under bug 7362 and bug 5430. It can be helpful to see examples of issues encountered during gcc upgrades in the past.