I've tried to build Python 2.1.1 on libc5 linux 
(Slackware 4). After configure I had to edit 
Modules/Setup to tell it to make the socket module, 
or "import socket" wouldn't work. But, compiling the 
socket module seems to demand glibc2.*. This is the 
error:

./Modules/socketmodule.c:178: netpacket/packet.h: No 
such file or directory

The FAQ says (3.8): "Once you've built Python, use it 
to run the regen.py script in the Lib/linux1 
directory". There is no regen.py or such directory. 
And the FAQ says that it's for Linux 1.*... (I'm 
running 2.2.19).