Hi friends, I have developed an application that I have compiled and running on Centos 4.1 ( final ) but now I would like to get it running on CentOS 3.x due to customer requirements. I have gcc version 3.4.3 20050227 ( Red Hat 3.4.3-22.1 ) running on CentOS 4.1, while I have gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-49 ) on centOS 3.4 ( final ) .. i would like to know is there any way in which I can compile for a lower version of libstdc++ machine using a different libstdc++ ? Looking forwad to your replies. Thanks Dhanvi