gcc: Reduce libc required version

Question

I am trying to run a newly compiled binary on some oldish 32bits RedHat distribution.
The binary is compiled C (not++) on a CentOS 32bits VM running libc v2.12.

Red

Answer 1

Ok then, trying to find some balance between elegance and brute force, I downloaded a VM matching the target kernel version, hence fixing library issues.
The whole thing (download + yum install gcc) took less than 30 minutes.

References: Virtual machines, Kernel Version Mapping Table