*** ./client.c.ORIG	Wed Jan 19 13:51:56 2011
--- ./client.c	Wed Jan 19 14:00:47 2011
***************
*** 9,14 ****
--- 9,17 ----
  #include <X11/Xatom.h>
  #include <X11/Xlib.h>
  #include <X11/Xutil.h>
+ #ifdef _AIX
+ #include <X11/keysym.h>
+ #endif
  
  #include "list.h"
  #include "wind.h"
*** ./root.c.ORIG	Wed Jan 19 14:01:08 2011
--- ./root.c	Wed Jan 19 14:01:47 2011
***************
*** 5,10 ****
--- 5,13 ----
  #include <stdio.h>
  #include <stdlib.h>
  #include <X11/Xlib.h>
+ #ifdef _AIX
+ #include <X11/keysym.h>
+ #endif
  
  #include "wind.h"
  
*** ./main.c.ORIG	Sat Aug 16 00:31:31 2014
--- ./main.c	Wed Aug 20 16:16:48 2014
***************
*** 39,44 ****
--- 39,48 ----
  #include "deleven.xbm"
  #include "delodd.xbm"
  
+ #ifdef _AIX
+ #include "pselect.c"
+ #endif
+ 
  static int errhandler(Display *, XErrorEvent *);
  static void onsignal(int);
  static int waitevent(void);
***************
*** 94,100 ****
  
  static XContext listeners;
  
! static sigset_t sigmask;
  
  /*
   * Print formatted error message
--- 98,104 ----
  
  static XContext listeners;
  
! static sigset_t MYsigmask;
  
  /*
   * Print formatted error message
***************
*** 163,169 ****
  	FD_SET(conn, &rfds);
  	nfds = MAX(conn + 1, nfds);
  
! 	if (pselect(nfds, &rfds, NULL, NULL, NULL, &sigmask) == -1) {
  		errorf("pselect: %s", strerror(errno));
  		exitstatus = 1;
  		return -1;
--- 167,173 ----
  	FD_SET(conn, &rfds);
  	nfds = MAX(conn + 1, nfds);
  
! 	if (pselect(nfds, &rfds, NULL, NULL, NULL, &MYsigmask) == -1) {
  		errorf("pselect: %s", strerror(errno));
  		exitstatus = 1;
  		return -1;
***************
*** 321,327 ****
  	listeners = XUniqueContext();
  
  	sigset_t sigsafemask;
! 	sigprocmask(SIG_SETMASK, NULL, &sigmask);
  	sigprocmask(SIG_SETMASK, NULL, &sigsafemask);
  
  	struct sigaction sa;
--- 325,331 ----
  	listeners = XUniqueContext();
  
  	sigset_t sigsafemask;
! 	sigprocmask(SIG_SETMASK, NULL, &MYsigmask);
  	sigprocmask(SIG_SETMASK, NULL, &sigsafemask);
  
  	struct sigaction sa;
*** ./pselect.c.ORIG	Wed Aug 20 16:16:10 2014
--- ./pselect.c	Wed Aug 20 16:17:02 2014
***************
*** 0 ****
--- 1,29 ----
+ /*
+  * This is *not* a complete implementation of the Posix.1g pselect()
+  * function.  For atomicity this must be implemented within the kernel,
+  * with the sigprocmask/select/sigprocmask performed as a single atomic
+  * operation.
+  * This is just a quick hack to allow simple programs using it to compile.
+  * Using such programs with this hack will probably lead to race conditions.
+  */
+ 
+ int
+ pselect(int nfds, fd_set *rset, fd_set *wset, fd_set *xset,
+ 		const struct timespec *ts, const sigset_t *sigmask)
+ {
+ 	int				n;
+ 	struct timeval	tv;
+ 	sigset_t		savemask;
+ 
+ 	if (ts != NULL) {
+ 		tv.tv_sec = ts->tv_sec;
+ 		tv.tv_usec = ts->tv_nsec / 1000;	/* nanosec -> microsec */
+ 	}
+ 
+ 	sigprocmask(SIG_SETMASK, sigmask, &savemask);	/* caller's mask */
+ 	n = select(nfds, rset, wset, xset, (ts == NULL) ? NULL : &tv);
+ 	sigprocmask(SIG_SETMASK, &savemask, NULL);		/* restore mask */
+ 
+ 	return(n);
+ }
+ /* end pselect */