-Q8L- Why do I get a parse error in tkInit.c when I try to compile Tk on my Irix machine?

From: -VIII- Questions on building Tcl and friends on your system

A8L. Jon Knight <J.P.Knight@loughborough.ac.uk> reports that the version of
Irix that he is using doesn't define a uid_t.  One needs to define one 
somewhere (or comment out the lines causing the problems) to get the compile
to continue.