pembo13: he did. Fedora Core 4.
The Dude05: this topic really belongs in "software" rather than "programming", but I'm hoping simply (re)installing Gcc should square you away.
Again, the "gcc" command really does at least three separate things (or more, depending on how you count): runs the preprocessor (which picks up your headers), the compiler (which builds your source) and the linker (which picks up the system libraries). Your problem is in the third one: your linker can't find "libc<something>". Maybe it's a version mismatch, maybe it's an incomplete install, maybe it's a configuration issue. In any case, consider de-installing and re-installing Gcc.
'Hope that helps .. PSM