Mike Hill <mikehill(a)hgeng.com> writes:
 'make' stops here:
 	process.c:1695: `SIGIO' undeclared (first use this function) 
You're getting bitten by this code in src/syssignal.h:
/* SIGPOLL is the SVR4 signal.  Those systems generally define
   SIGIO as an alias for SIGPOLL, but just in case ... */
#if !defined (SIGIO) && defined (SIGPOLL)
# define SIGIO SIGPOLL
#endif