It's nice to have a developer's CD distributed with MacOS X Release. You should install them for sure.
Bash
I prefer bash to tcsh:
# rpm -ivh <somewhere>/bash-2.03-1a.ppc.rpm
From now on, I am going to use bash uless otherwise stated.
Libm
# rpm -ivh <somewhere>/Libm-18-1.ppc.rpm
Libcompat
# rpm -ivh <somewhere>/Libcompat-14.1-1a.ppc.rpm
Libstreams
# rpm -ivh <somewhere>/Libstreams-22-1a.ppc.rpm
Csu
# rpm -ivh <somewhere>/Csu-36-1a.ppc.rpm
# rpm -ivh <somewhere>/Csu-devel-36-1a.ppc.rpm
Libc
# rpm -ivh <somewhere>/Libc-167.1-1a.ppc.rpm
cctools
# rpm -ivh <somewhere>/cctools-353.7-1a.ppc.rpm