The socket module (socket.c) fails to compile
which has to do with the use of a varable called "sun" this is not a good idea!. I changed all varables from sun to zun and I then get a error message which looks like:-

"sockets.c:1618: structure has no member named `msg_control'

This appears to be an attempt to use a XPG2 msghdr structure but for the life of me I can't compile anything with the XOPEN flags set.