?X:
?X:	Look wether  MAP_ANONYMOUS, MAP_VARIABLE and MAP_PRIVATE are defined
?X:
?MAKE:d_smartmmap: Inhdr contains test Loc Setvar Findhdr d_mmap
?MAKE:	-pick add $@ %<
?S:d_smartmmap:
?S:	This variable conditionally defines HAS_SMART_MMAP
?S:.
?C:HAS_SMART_MMAP:
?C:	This symbol, if defined, indicates to the C program that it can
?C:	use mmap and munmap for shared memory.
?C:.
?H:#$d_smartmmap HAS_SMART_MMAP	/**/
?H:.
?D:d_smartmmap=''
?LINT:set d_smartmmap
val="$undef"
if $test $d_mmap = "$define"; then
	xxx=`./findhdr sys/mman.h`
	if $test "$xxx"; then
    	if $contains 'MAP_ANONYMOUS' $xxx >/dev/null 2>&1; then
			if $contains 'MAP_VARIABLE' $xxx >/dev/null 2>&1; then
				if $contains 'MAP_PRIVATE' $xxx >/dev/null 2>&1; then
        			val="$define"
        			echo "MAP_ANONYMOUS, MAP_VARIABLE and MAP_PRIVATE are defined." >&4
        			echo "mmap and munmap can be used for shared memory." >&4
				else
					echo "MAP_PRIVATE is not defined." >&4
					echo "HAS_SMART_MMAP is not defined." >&4
    			fi
			else
				echo "MAP_VARIABLE is not defined." >&4
				echo "HAS_SMART_MMAP is not defined." >&4
    		fi
		else
			echo "MAP_ANONYMOUS is not defined." >&4
		echo "HAS_SMART_MMAP is not defined." >&4
    	fi
	else
		echo "<sys/mman.h> not found." >&4
		echo "HAS_SMART_MMAP is not defined." >&4
	fi
else
	echo "Your system does not support mmap, HAS_SMART_MMAP is not defined." >&4
fi
set d_smartmmap
eval $setvar