Problem with C-Kermit for Xenix 2.2.1

[Phil Cornes]

I have source for C-Kermit with conditionals for Xenix.  This will not
compile due to an apparent problem with the include files types.h, 
inode.h and file.h.

They appear to have components which are mutually self-referencing and
I cannot find an order in which to #include them so that the program
will compile.

Can anyone assist me?

Mike Turner