I am getting the following error when trying to run several executables:
/lib/libc.so.6: version `GLIBC_2.7\' not found (required by .tools/bridge/bridge)
The 'glibc' is not the latest version, and you can try to update glibc package.
yum install glibc
or
yum install glibc-2.7
The error means that you built .tools/bridge/bridge
on a system with glibc-2.7
(or later), and are trying to run it on a system that has glibc-2.6
or earlier.
Linux (and most UNIXes) does not support "build on later, run on earlier"; only the reverse scenario is supported.
See also this answer.