These are the required release levels for Red Hat Enterprise Linux 5.3 x86 32-bit and x86-64 64-bit:
kernel-2.6.18-128.el5 SMP
glibc-2.5-34
gcc-4.1.2 20080704 (Red Hat 4.1.2-44)
The requirements for Red Hat Enterprise Linux 5.3 on POWER 32-bit and 64-bit are:
kernel-2.6.18-128.el5 SMP
glibc-2.5-34
IBM XL C 10.1
