The reason why I'm asking is because there is a GCC 4.8 VxWorks toolchain (as of now, only for Linux)
here. The goal of the toolchain is to allow teams to use the C++11 standard in their code and to bring robot code development to Linux. The project is currently officially supporting Ubuntu and Debian, but I have suggested that we also include Arch and Fedora users (as I'm most comfortable with those distributions). It seems like Red Hat-based, Ubuntu-based, and Arch-based distributions are the most popular.
Alex Brinister