How to use two versions of glibc at the same time?

Question

hi, I am currently using ubuntu 9.10 with glibc version 2.11.1-0, ok, I am doing a project that I want to test with another version of glibc, which is 2.5-58, I wanted to know the following things regarding this:

How to compile version 2.5-58, however keeping the previous version?

How to link existing programs with binaries of a newer version of glibc?

I would really appreciate if anyone can help me !!!

Let me know if my question is not specific. Please be very helpful if anyone can answer me. Thanks

Answer 1

Do not mix glibc versions installed on your system. Especially do not mix programs associated with one or another version. You are likely to break your system if you do.

Answer 2

I am not an expert in this, but maybe this will help.

http://www.bitwagon.com/rtldi/rtldi.html

Answer 3

There is no solution in ubuntu:

http://brainstorm.ubuntu.com/idea/14774

There is a "portage" for managing multiple versions of libary in Gentoo:

http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=1