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from christos@netbsd:
Minor:
    - ${.PREFIX} should never contain a full pathname
    - Fixed gcc -Wall warnings
Major:
    - compatMake is now FALSE. This means that we are now running in
      full pmake mode:
          * rules on dependency lines can be executed in parallel and or
            out of sequence:

            foo: bar baz

            can fire the rule for baz before the rule for bar is fired.
            To enforce bar to be fired before baz, another rule needs to be
            added. [bar: baz]
          * adjacent shell commands in a target are now executed by a single
            invocation of the shell, not one invocation of the shell per line
      (compatMake can be turned off using the -B flag)
    - The -j flag now works... I.e. make -j 4 will fork up to four jobs in
      parallel when it can. The target name is printed before each burst
      of output caused by the target execution as '--- target ---', when j > 1
    - I have changed all the Makefiles so that they work with make -j N, and
      I have tested the whole netbsd by:
          'make -j 4 cleandir; make -j 4 depend; make -j 4; make -j 4 install'
    - I have not compiled or tested this version of make with -DREMOTE.
- Turn compat mode on by default. It gets turned off when the -j without
  the -B flag is specified. [Thus you can use -j 1 to turn it off].
- Fix malloc -> emalloc as Gordon noted.
Updates for POSIX/SVR4 compiling:
arch.c:          Don't require ranlib stuff. Not everybody has it.
dir.c:           SunOS-4 != Solaris; change #ifdef sun to #if sun && !__svr4__
job.c, compat.c: Don't use 'union wait', use int and the W*() macros.
main.c:          Check for uname() == -1; some unames return > 0...
util.c, job.c:   Add signal() with BSD semantics for svr4, don't use bsd
                 sigmask and friends.

from cgd@netbsd:
pull in make.h.  (PAlloc() now uses emalloc(), which is prototyped in
make.h.  If the prototype is not in scope on the Alpha, I see lots
of "cast to pointer from integer of different size" warnings.)

/*	$NetBSD: bit.h,v 1.5 1995/11/08 02:30:53 christos Exp $	*/

/*
 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
 * Copyright (c) 1988, 1989 by Adam de Boor
 * Copyright (c) 1989 by Berkeley Softworks
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)bit.h	5.3 (Berkeley) 6/1/90
 */

/*
 * bit.h --
 *
 *	Definition of macros for setting and clearing bits in an array
 *	of integers.
 *
 *	It is assumed that "int" is 32 bits wide.
 */

#ifndef _BIT
#define _BIT

#include "sprite.h"

#define BIT_NUM_BITS_PER_INT	32
#define BIT_NUM_BITS_PER_BYTE	8

#define Bit_NumInts(numBits)	\
	(((numBits)+BIT_NUM_BITS_PER_INT -1)/BIT_NUM_BITS_PER_INT)

#define Bit_NumBytes(numBits)	\
	(Bit_NumInts(numBits) * sizeof(int))

#define Bit_Alloc(numBits, bitArrayPtr)  	\
        bitArrayPtr = (int *) emalloc((unsigned)Bit_NumBytes(numBits)); \
        Bit_Zero((numBits), (bitArrayPtr))

#define Bit_Free(bitArrayPtr)	\
        free((char *)bitArrayPtr)

#define Bit_Set(numBits, bitArrayPtr) \
	((bitArrayPtr)[(numBits)/BIT_NUM_BITS_PER_INT] |= \
				(1 << ((numBits) % BIT_NUM_BITS_PER_INT)))

#define Bit_IsSet(numBits, bitArrayPtr) \
	((bitArrayPtr)[(numBits)/BIT_NUM_BITS_PER_INT] & \
				(1 << ((numBits) % BIT_NUM_BITS_PER_INT)))

#define Bit_Clear(numBits, bitArrayPtr) \
	((bitArrayPtr)[(numBits)/BIT_NUM_BITS_PER_INT] &= \
				~(1 << ((numBits) % BIT_NUM_BITS_PER_INT)))

#define Bit_IsClear(numBits, bitArrayPtr) \
	(!(Bit_IsSet((numBits), (bitArrayPtr))))

#define Bit_Copy(numBits, srcArrayPtr, destArrayPtr) \
	bcopy((char *)(srcArrayPtr), (char *)(destArrayPtr), \
		Bit_NumBytes(numBits))

#define Bit_Zero(numBits, bitArrayPtr) \
	bzero((char *)(bitArrayPtr), Bit_NumBytes(numBits))

extern int	  Bit_FindFirstSet();
extern int	  Bit_FindFirstClear();
extern Boolean	  Bit_Intersect();
extern Boolean 	  Bit_Union();
extern Boolean 	  Bit_AnySet();
extern int  	  *Bit_Expand();
	 
#endif /* _BIT */