Add sig/pid/uid size and sign probes.

[metaconfig.git] / U / typedefs / gidsign.U

?RCS:
?RCS: Copyright (c) 1999, Jarkko Hietaniemi
?RCS: 
?RCS: You may redistribute only under the terms of the Artistic Licence,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic Licence; a copy of which may be found at the root
?RCS: of the source tree for dist 3.0.
?RCS:
?MAKE:gidsign: Myread Typedef gidtype
?MAKE:	-pick add $@ %<
?S:gidsign:
?S:	This variable contains the signedness of a gidtype.
?S:	1 for unsigned, -1 for signed.
?S:.
?C:Gid_t_SIGN:
?C:	This symbol holds the signedess of a Gid_t.
?C:	1 for unsigned, -1 for signed.
?C:.
?H:#define Gid_t_SIGN	$gidsign		/* GID sign */
?H:.
?F:!try
?T:yyy
?LINT: set gidsign
echo " "
echo "Checking the sign of $gidtype..." >&4 
ry.c <<'EOCP'
#include <sys/types.h>
#include <stdio.h>
int main() {
	$gidtype foo = -1;
	if (foo < 0)
		printf("-1\n");
	else
		printf("1\n");
}
EOCP
if eval $compile; then
	yyy=`./try`
	case "$yyy" in
	'')	gidsign=1
		echo "(I can't execute the test program--guessing unsigned.)" >&4
		;;
	*)	gidsign=$yyy
		case "$gidsign" in
		 1) echo "Your $gidtype is unsigned." ;;
		-1) echo "Your $gidtype is signed."   ;;
		esac
	esac
else
	gidsign=1
	echo "(I can't compile the test program--guessing unsigned.)" >&4
fi