fixes for emacs on SPARC BSDi 4.2

[Mark W. Snitily]

Paul,

One of the things I did this past week was to get emacs 20.7 up and running
on SPARC BSDi 4.2.  Decided I had better comment the fixes (actually they are
just workarounds, not "real" fixes) and email them to you before I forget.
Am also cc'ing them to bug-gnu-emacs@gnu.org.

 -- Mark

*** src/s/bsd386.h.org  Wed May  7 15:20:37 1997
--- src/s/bsd386.h      Sat Jun 23 19:08:34 2001
***************
*** 11,18 ****
--- 11,25 ----
  #define SIGNALS_VIA_CHARACTERS
  
  #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base)
+ 
+ #if 0
+ /* This is a workaround on SPARC BSDi 4.2.  These two #define's cause a
+  * conflict with m/sparc.h.   I'm sure must be a better way than just
+  * #ifdef'ing them out.  MWS 23-June-2001
+  */
  #define A_TEXT_OFFSET(x)    (sizeof (struct exec))
  #define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr))
+ #endif
  
  #define LIBS_DEBUG
  #define LIB_X11_LIB -L/usr/X11/lib -lX11
*** src/process.c.org   Tue May 23 15:10:16 2000
--- src/process.c       Sat Jun 23 19:00:01 2001
***************
*** 2479,2487 ****
          FD_ZERO (&Available);
        }
        else
!       nfds = select (max (max_process_desc, max_keyboard_desc) + 1,
!                      &Available, (SELECT_TYPE *)0, (SELECT_TYPE *)0,
!                      &timeout);
  
        xerrno = errno;
  
--- 2479,2501 ----
          FD_ZERO (&Available);
        }
        else
!         {
!         /* This is a workaround on SPARC BSDi 4.2.  For some reason the
!          * microseconds for the timeout value were being set to a
!          * negative value causing select() to return an "invalid argument"
!          * error message.
!          *
!          * The correct fix is to figure out why it's being set to a negative
!          * value.  Setting it to zero here is just a workaround (i.e. hack)
!          * that allows emacs to be "usable" on SPARC BSDi 4.2.
!          * MWS 23-June-2001
!          */
!         if (timeout.tv_usec < 0) timeout.tv_usec = 0;
! 
!         nfds = select (max (max_process_desc, max_keyboard_desc) + 1,
!                        &Available, (SELECT_TYPE *)0, (SELECT_TYPE *)0,
!                        &timeout);
!       }
  
        xerrno = errno;