REC-01nov91.patches

By Roger Critchlow (rec@arris.com or rec@elf.org).
! by Lance Norskog (thinman@netcom.com).

There is one small problem with the Intel 386/SYSV subset of the
	MCC01-01nov91.patches
to the
	01nov91.tar.Z
distribution of Scheme->C.  Specifically, most of the garbage collector
gets excluded by a #ifndef SYSV clause.

The appended patches, which should be applied to scrt/heap.c after the
MCC01-01nov91.patches, will fix this.  Things work much better with the
garbage collector.

Some other things 386 users should be aware of:

scrt/i386.s should be an empty file.  It isn't built by the MCC patches but
scrt/makefile will look for it.

If you're going to build on a system with 14 character file names, ie most
System V.3.2 Unix implementations, then you'll need the tar.fix script from
one of the earlier 386 patch kits, either REC-28sep90.patches or
SPARC-386.patches.

! The REC-28sep90.patches file also includes scripts to build shared
! library versions of the S2C system and Xlib programs on AT&T V.3
! machines.  These have not been tested with the 01nov91 release.

! The use of select() in the read/eval loop causes interaction to
! stop working on regular terminals under AT&T Unix V.3.  But it
! does work under an Xterm window, and on all terminals under
! ISC Unix V.3, and probably ESIX, DELL, and SCO as well.  You
! may have to back off to the 28sep90 read/eval loop for AT&T Unix.

-- rec/lcn --


------------------------------------------------------------------------
*** heap.c~	Tue Nov 19 23:24:07 1991
--- heap.c	Tue Nov 19 23:24:22 1991
***************
*** 1427,1433 ****
  	   check_obarray();
  	}
  	if  (sc_gcinfo)  {
- #ifndef SYSV
  	   fprintf( stderr,
  	   	    "\n***** COLLECT %d%% allocated (%d%% waste, %d MB) -> \n",
  	   	    (wasallocated*100)/sc_heappages,
--- 1427,1432 ----
***************
*** 1434,1440 ****
--- 1433,1441 ----
  		    (sc_extwaste*100)/(sc_heappages*PAGEWORDS),
  		    (sc_heappages*PAGEBYTES+ONEMB/2)/ONEMB );
  	}
+ #ifndef SYSV
  	getrusage( 0, &startru );
+ #endif /* SYSV */
  
  	/* Zero the current cons block, end the current extended block,
  	   initialize sc_locklist, advance the generation.
***************
*** 1521,1529 ****
--- 1522,1533 ----
  	sc_allocatedheappages = sc_generationpages;
  
  	/* Finish up */
+ #ifndef SYSV
  	getrusage( 0, &stopru );
  	updategcru();
+ #endif
  	if  (sc_gcinfo)  { 
+ #ifndef SYSV
  	   fprintf( stderr,
  	            "              %d%% locked  %d%% retained  %d user ms",
  		    (sc_lockcnt*100)/sc_heappages,