On Fri, Jan 7, 2011 at 12:45 PM, Ritika Garg <ritikagarg25 at gmail.com> wrote: > I also want glibc 2.7 for a particular application to run. The first step > mentioned is : > Step1:download nasm src.rpm from official site > > I did not understand what will this rpm do? I mean is that a substitute for > glibc 2.7? Nasm was the rpm that required glibc 2.7. He rebuilt the source rpm against the glibc version Centos 5 uses. His steps will not help you to upgrade glibc. Is there a reason you can't just build your application against the glibc in CentOS? Ryan