I want to know that how to install all those prerequisites on red Hat Enterprise Linux 5.

I am using Zimbra 7.1.0

NPTL. Native POSIX Thread Library
• Sudo. Superuser, required to delegate admins.
• libidn. For internationalizing domain names in
applications (IDNA)
• GMP. GNU Multiple-Precision Library.
• compat-libstdc ++-33. Compatibility Standard C++
For RHEL servers only

since this is my first post - let see who replies first - correctly.
Saulat Saleem