I am trying to compile an application on a CentOS 5.0 64-bit machine that gives me the error: /usr/local/bin/myprog: /usr/lib64/libstdc++: version `GLIBXX.3.4.9' not found (required by /usr/local/bin/myprog) I have gcc 4.2.3. I've performed a yum install compat-* and glibc* What am I missing? Thanks. Scott