Originally Posted by ol1v3rw
Why didn't you just download the binary rather than installing it?
I think he did download the binary and didn't have the runtime library (he never mentioned source and if you look at the package name it's architecture specific), but even if he wasn't using the binary there's tons of reasons to compile from source. He could be using third party patches, developing it, testing it, using it to learn how to code, or any one of an infinite number of posibilities.
Here's a link to a page with the RPM I think you're looking for: libstdc++-4.0.2-8.fc4.i386.html from RPMfind.net
Hope that's the package you're looking for.